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Technical Committee on Sprinkler System Discharge Criteria

First Draft Meeting

August 15-18, 2016

San Diego Marriott Gaslamp Quarter

660 K Street

San Diego, CA 92101

AGENDA

Monday August 15, 2016

1. Call to Order – 8:00 AM

2. Introductions of Members and Staff

3. Review and Approval of A2018 pre-First Draft Meeting Minutes

4. Review of A2018 Revision Cycle and Meeting Schedule

5. Review of Distributed Material and Workload

a. Act on Public Inputs

b. Act on Committee First Revisions

6. Task Group Reports

a. Chapter 4 – Don Hopkins

b. Chapter 5 – Kevin Kelly

c. Chapter 19 – Jon Denhardt

d. Storage Reformat TG – Wes Baker

e. Chapter 20 – Steve Wolin

f. Chapter 21-23 – Roland Huggins

g. Chapters 24/25 – Wes Baker

h. Chapter 26 – Kevin Kelly

i. Commodity Classification – Wes Baker

Thursday August 18, 2016

7. New business/Old business

8. Adjourn

Address List No PhoneSprinkler System Discharge Criteria AUT-SSD

Automatic Sprinkler Systems

David R. Hague07/22/2016

AUT-SSD

Russell B. Leavitt

ChairTelgian Corporation10230 S. 50th PlacePhoenix, AZ 85044Alternate: Tracey D. Bellamy

SE 03/05/2012AUT-SSD

Carl P. Anderson

PrincipalThe Fire Protection International Consortium1420 Marvin Road NE, #432Lacey, WA 98516Washington State Association of Fire Marshals

E 7/20/2000

AUT-SSD

Weston C. Baker, Jr.

PrincipalFM Global1151 Boston Providence TurnpikePO Box 9102Norwood, MA 02062-9102Alternate: Angele Morcos

I 7/19/2002AUT-SSD

Charles O. Bauroth

PrincipalLiberty Mutual36 Willow LaneUxbridge, MA 01569

I 1/18/2001

AUT-SSD

Kerry M. Bell

PrincipalUL LLC333 Pfingsten RoadNorthbrook, IL 60062-2096Alternate: Pravinray D. Gandhi

RT 10/10/1997AUT-SSD

Thomas G. Deegan

PrincipalViking Group, Inc.3033 Orchard Vista SE, Suite 308Grand Rapids, MI 49546-7077Alternate: Martin H. Workman

M 7/12/2001

AUT-SSD

John August Denhardt

PrincipalStrickland Fire Protection, Inc.401 Penn BeltForestville, MD 20747-4737American Fire Sprinkler AssociationInstaller/MaintainerAlternate: Steven J. Scandaliato

IM 1/16/1998AUT-SSD

James Dockrill

PrincipalJ&S Fire Sprinkler Design & Consulting55 Woodrow StreetSt. Catharines, ON L2P 2A4 CanadaCanadian Automatic Sprinkler AssociationAlternate: Jason W. Ryckman

IM 08/09/2012

AUT-SSD

Abram Selim Fouad

PrincipalElite Consolidated Engineers11, 12 Moustafa Refaat StreetSheraton HelioplisCairo, Egypt


Bo Hjorth

PrincipalAlbaCon ABBox 619Nacka, 13121 SwedenAlternate: Joakim Bauer

SE 3/21/2006

AUT-SSD

Donald Hopkins, Jr.

PrincipalJENSEN HUGHES3610 Commerce Drive, Suite 817Baltimore, MD 21227-1652JENSEN HUGHES

SE 9/30/2004AUT-SSD

Roland J. Huggins

PrincipalAmerican Fire Sprinkler Association, Inc.12750 Merit Drive, Suite 350Dallas, TX 75251-1273American Fire Sprinkler AssociationDesignAlternate: James M. Fantauzzi

IM 10/10/1997

1




AUT-SSD

Kenneth E. Isman

PrincipalUniversity of Maryland7402 Forests Edge CourtLaurel, MD 20707Alternate: Milosh T. Puchovsky

SE 7/26/2007AUT-SSD

Sultan M. Javeri

PrincipalSC Engineering2 Impasse Du GuernehlieLa Trinite, Surzur, 56190 France

IM 10/10/1997

AUT-SSD

Larry Keeping

PrincipalPLC Fire Safety Solutions3413 Wolfedale Road, Suite 6Mississauga, ON L5C 1V8 Canada


Kevin J. Kelly

PrincipalVictaulic4901 Kesslersville RoadEaston, PA 18040-6714National Fire Sprinkler AssociationManufacturerAlternate: Peter W. Thomas

M 04/05/2016

AUT-SSD

Elham Klausbruckner

PrincipalKlausbruckner & Associates, Inc.2495 Truxtun Road, Suite 205San Diego, CA 92106-6159


William E. Koffel

PrincipalKoffel Associates, Inc.8815 Centre Park Drive, Suite 200Columbia, MD 21045-2107Alternate: Mark J. Aaby

SE 10/1/1999

AUT-SSD

A. Christine LaFleur

PrincipalSandia National LaboratoriesRisk & Reliability DepartmentPO Box 5800, MS-0909Albuquerque, NM 87185-0909Alternate: Alice B. Muna

U 04/05/2001AUT-SSD

Kenneth W. Linder

PrincipalSwiss Re2 Waterside Crossing, Suite 200Windsor, CT 06095-1588Alternate: Joseph A. Lynch

I 7/28/2006

AUT-SSD

Stuart Lloyd

PrincipalZurich Risk Engineering UK5 Margrove CloseFailsworth, Manchester, M35 9XQ Great BritainAlternate: Richard A. Gallagher

I 08/17/2015AUT-SSD

Brian Mosberian

PrincipalCity of Phoenix200 West WashingtonPhoenix, AZ 85003

E 03/07/2013

AUT-SSD

Garner A. Palenske

PrincipalJensen Hughes/AON Fire Protection Engineering11770 Bernardo Plaza Court, Suite 116San Diego, CA 92128

I 7/20/2000AUT-SSD

Richard Pehrson

PrincipalPehrson Fire PC7455 France Avenue South, Suite 271Edina, MN 55435International Fire Marshals AssociationAlternate: Daniel A. Kaiser

E 7/22/1999

2




AUT-SSD

Kenneth R. Schneider

PrincipalUA - ITFTraining Specialist3723 S. BroadwaySt. Louis, MO 63118United Assn. of Journeymen & Apprentices of thePlumbing & Pipe Fitting IndustryAlternate: Robert C. Holliday

L 03/05/2012AUT-SSD

Peter T. Schwab

PrincipalWayne Automatic Fire Sprinklers, Inc.222 Capitol CourtOcoee, FL 34761-3033

IM 8/2/2010

AUT-SSD

Michael D. Sides

PrincipalGlobal Asset Protection Services1360 Olympia Park CircleOcoee, FL 34761Alternate: Mark A. Bowman

I 7/16/2003AUT-SSD

Gary T. Smith

PrincipalDACS, Inc.PO Box 161Great Meadows, NJ 07838Rack Manufacturers InstituteAlternate: Gerald R. Schultz

M 08/09/2012

AUT-SSD

William B. Smith

PrincipalCode Consultants, Inc.2043 Woodland Parkway, Suite 300St. Louis, MO 63146-4235Alternate: Thomas Larry Frank


Jack W. Thacker

PrincipalAllan Automatic Sprinkler of Southern California3233 Enterprise StreetBrea, CA 92821-6239National Fire Sprinkler AssociationContractorAlternate: George W. Stanley

IM 10/10/1997

AUT-SSD

Victoria B. Valentine

PrincipalNational Fire Sprinkler Association, Inc.40 Jon Barrett RoadPatterson, NY 12563-2164National Fire Sprinkler AssociationDesign TechnicianAlternate: Jon R. Ackley

M 04/08/2015AUT-SSD

Douglas Wilson

PrincipalCity of San Diego1222 First Avenue, MS 401San Diego, CA 92101Alternate: Michael Six

E 03/03/2014

AUT-SSD

Steven D. Wolin

PrincipalReliable Automatic Sprinkler Company, Inc.1470 Smith Grove RoadLiberty, SC 29657-4305Alternate: Thomas L. Multer

M 10/28/2014AUT-SSD

Terry L. Victor

Voting AlternateTyco/SimplexGrinnell705 Digital Drive, Suite NLinthicum, MD 21090-2267

M 10/29/2012

AUT-SSD

Mark J. Aaby

AlternateKoffel Associates, Inc.8815 Centre Park Drive, Suite 200Columbia, MD 21045-2107Principal: William E. Koffel

SE 3/4/2008

3




AUT-SSD

Jon R. Ackley

AlternateDalmatian Fire, Inc.5670 West 73rd StreetIndianapolis, IN 46278National Fire Sprinkler AssociationDesign TechnicianPrincipal: Victoria B. Valentine

M 10/29/2012AUT-SSD

Joakim Bauer

AlternateAlbaCon ABBox 619Nacka, 13121 SwedenPrincipal: Bo Hjorth

SE 10/29/2012

AUT-SSD

Tracey D. Bellamy

AlternateTelgian Corporation900 Circle 75 Parkway, Suite 680Atlanta, GA 30339-3084Principal: Russell B. Leavitt

SE 1/10/2008AUT-SSD

Mark A. Bowman

AlternateXL Global Asset Protection Services13467 Chevington DrivePickerington, OH 43147Principal: Michael D. Sides

I 7/16/2003

AUT-SSD

James M. Fantauzzi

AlternateNorth East Fire Protection Systems Inc.318 Charlton RoadBallston, NY 12020American Fire Sprinkler AssociationDesignPrincipal: Roland J. Huggins

IM 04/05/2016AUT-SSD

Thomas Larry Frank

AlternateCode Consultants, Inc.2043 Woodland Parkway, Suite 300Saint Louis, MO 63146Principal: William B. Smith

SE 10/28/2014

AUT-SSD

Richard A. Gallagher

AlternateZurich Services Corporation5124 New Kent RoadWilmington, DE 19808-2706Principal: Stuart Lloyd

I 08/17/2015AUT-SSD

Pravinray D. Gandhi

AlternateUL LLC333 Pfingsten RoadNorthbrook, IL 60062-2096Principal: Kerry M. Bell

RT 4/5/2001

AUT-SSD

Robert C. Holliday

AlternateSprinkler Fitters LU 268 JAC1544 South 3rd StreetSt. Louis, MO 63104United Assn. of Journeymen & Apprentices of thePlumbing & Pipe Fitting IndustryPrincipal: Kenneth R. Schneider

L 10/29/2012AUT-SSD

Daniel A. Kaiser

AlternateMinnesota Department of Public SafetyState Fire Marshal Division203 SW 3rd StreetMedford, MN 55049International Fire Marshals AssociationPrincipal: Richard Pehrson

E 03/05/2012

AUT-SSD

Joseph A. Lynch

AlternateSwiss Re, Global Asset Protection Services1150 Sanctuary Parkway, Suite 425Alpharetta, GA 30009Principal: Kenneth W. Linder

I 04/05/2016AUT-SSD

Angele Morcos

AlternateFM Global1151 Boston-Providence TurnpikeNorwood, MA 02062-9102Principal: Weston C. Baker, Jr.

I 07/29/2013

4




AUT-SSD

Thomas L. Multer

AlternateReliable Automatic Sprinkler Company, Inc.1470 Smith Grove RoadLiberty, SC 29657-4305Principal: Steven D. Wolin

M 12/08/2015AUT-SSD

Alice B. Muna

AlternateSandia National LaboratoriesP.O. Box 5800, MS-0909Albuquerque, NM 87185Principal: A. Christine LaFleur

U 10/29/2012

AUT-SSD

Milosh T. Puchovsky

AlternateWorcester Polytechnic InstituteDepartment of Fire Protection Engineering100 Institute RoadWorcester, MA 01609Principal: Kenneth E. Isman


Jason W. Ryckman

AlternateCanadian Automatic Sprinkler Association335 Renfrew Drive, Suite 302Markham, ON L3R 9S9 CanadaPrincipal: James Dockrill

IM 10/28/2014

AUT-SSD

Steven J. Scandaliato

AlternateSDG, LLCP.O. Box 19798Fountain Hills, AZ 85269American Fire Sprinkler AssociationInstaller/MaintainerPrincipal: John August Denhardt

IM 8/9/2011AUT-SSD

Gerald R. Schultz

AlternateThe FPI Consortium, Inc.7501Lemont RoadWoodridge, IL 60517Rack Manufacturers InstitutePrincipal: Gary T. Smith

M 08/09/2012

AUT-SSD

Michael Six

AlternateBremerton Fire Department911 Park AvenueBremerton, WA 98337Principal: Douglas Wilson

E 10/28/2014AUT-SSD

George W. Stanley

AlternateWiginton Fire Protection Engineering, Inc.699 Aero LaneSanford, FL 32771National Fire Sprinkler AssociationContractorPrincipal: Jack W. Thacker

IM 1/16/2003

AUT-SSD

Peter W. Thomas

AlternateVictaulic Company of America137 Finch LaneSaunderstown, RI 02874National Fire Sprinkler AssociationManufacturerPrincipal: Kevin J. Kelly

M 01/18/2001AUT-SSD

Martin H. Workman

AlternateThe Viking Corporation210 North Industrial Park RoadHastings, MI 49058Principal: Thomas G. Deegan

M 1/15/2004

AUT-SSD

Barry M. Lee

Nonvoting MemberWorlmwold16 Payten StreetKogarah Bay, NSW 2217 AustraliaTyco Fire Protection Products

M 10/10/1997AUT-SSD

David R. Hague

Staff LiaisonNational Fire Protection Assocation1 Batterymarch ParkQuincy, MA 02169-7471

3/18/2016

5

Process

StageProcess Step Dates for TC

Dates for TC

with CC

Public Input Closing Date 6/29/2016 6/29/2016

Final date for TC First Draft Meeting 12/7/2016 9/7/2016Posting of First Draft and TC Ballot 1/25/2017 10/19/2016Final date for Receipt of TC First Draft ballot 2/15/2017 11/9/2016Final date for Receipt of TC First Draft ballot ‐ recirc 2/22/2017 11/16/2016Posting of First Draft for CC Meeting 11/23/2016Final date for CC First Draft Meeting 1/4/2017Posting of First Draft and CC Ballot 1/25/2017Final date for Receipt of CC First Draft ballot 2/15/2017Final date for Receipt of CC First Draft ballot ‐ recirc 2/22/2017Post First Draft Report for Public Comment 3/1/2017 3/1/2017

Public Comment closing date 5/10/2017 5/10/2017

Notice published on Consent Standards (Standards that receive No Comments). Note: Date varies and determined via TC ballot.

_ _

Appeal Closing Date for Consent Standards (15 Days) (Standards That Received

No Comments)_ _

Final date for TC Second Draft Meeting 11/8/2017 8/2/2017Posting of Second Draft and TC Ballot 12/20/2017 9/13/2017Final date for Receipt of TC Second Draft Ballot 1/10/2018 10/4/2017Final date for receipt of TC Second Draft ballot ‐ recirc 1/17/2018 10/11/2017Posting of Second Draft for CC Mtg 10/18/2017Final date for CC Second Draft Meeting 11/29/2017Posting of Second Draft for CC Ballot 12/20/2017Final date for Receipt of CC Second Draft ballot 1/10/2018Final date for Receipt of CC Second Draft ballot ‐ recirc 1/17/2018Post Second Draft Report for NITMAM Review 1/24/2018 1/24/2018

Notice of Intent to Make a Motion (NITMAM) Closing Date 2/21/2018 2/21/2018Posting of Certified Amending Motions (CAMs) and Consent Standards 4/4/2018 4/4/2018Appeal Closing Date for Consent Standards (15 Days after posting) 4/19/2018 4/19/2018SC Issuance Date for Consent Standards (10 Days) 4/29/2018 4/29/2018

Tech Session Association Meeting for Standards with CAMs 6/4‐7/2018 6/4‐7/2018

Appeal Closing Date for Standards with CAMs (20 Days after ATM) 6/27/2018 6/27/2018Council Issuance Date for Standards with CAMs* 8/14/2018 8/14/2018

Comment

Stage (Second

Draft)

Tech Session

Preparation

(& Issuance)

Appeals and

Issuance

2018 ANNUAL REVISION CYCLE

Public Input

Stage

(First Draft)

* Public Input Closing Dates may vary according to standards and schedules for Revision Cycles may change. Please check the

NFPA Website for the most up‐to‐date information on Public Input Closing Dates and schedules at www.nfpa.org/document # (i.e.

www.nfpa.org/101) and click on Next Edition tab.

Technical Committee on Sprinkler System Discharge Criteria

Pre-First Draft Meeting

Courtyard San Antonio Riverwalk

San Antonio, TX

June 29-30, 2016

1. Chairman Russ Leavitt called the meeting to order at 8:00am and self-introductions were

made.

2. Dave Hague gave a Staff report and presentation on general meeting procedures.

3. Task Groups for this revision cycle were established (see attached).

4. The committee adjourned to Task Groups and began work on Public Inputs received to date.

5. A discussion was held regarding the scope of the proposed Chapter 25 for In-rack

Sprinklers. The chapter 25 TG was assigned to review and prepare a recommendation.

6. There was no old business to discuss.

7. There was no new business to discuss.

8. The meeting adjourned at 12:00pm on the 30th.

Attendees

Principals:

Russell Leavitt, Chair

Thomas Deegan, Viking Group, Inc.

John Denhardt, Strickland Fire Protection

James Dockrill, J&S Fire Sprinkler Design & Consulting

Bo Hjorth, AlbaCon AB

Donald Hopkins, Jr., Jensen Hughes

Roland Huggins, American Fire Sprinkler Association, Inc.

Kenneth Isman, University of Maryland

Sultan Javeri, SC Engineering

Larry Keeping, PLC Fire Safety Solutions

Kevin Kelly, Victaulic

Elley Klausbruckner, Klausbruckner & Associates, Inc.

William Koffel, Koffel Associates, Inc.

A. Christine LaFleur, Sandia National Laboratories

Kenneth Linder, Swiss Re

Stuart Lloyd, Zurich Risk Engineering UK

Kenneth Schneider, UA – ITF

Peter Schwab, Wayne Automatic Fire Sprinklers, Inc.

Michael Sides, Global Asset Protection Services

Gary Smith, DACS, Inc.

Jack Thacker, NFSA Rep

Victoria Valentine, NFSA Rep

Steven Wolin, Reliable Automatic Sprinkler Company, Inc.

Alternates:

Joakim, Bauer, Alt to B. Hjorth

Thomas Larry Frank, Alt. to W. Smith

Richard Gallagher, Alt to S. Lloyd

Robert Holliday, Alt to K. Schneider

Milosh Puchovsky, Alt. to K. Isman

Steven Scandaliato, Alt. to J. Denhardt

Gerald Schultz, Alt. to G. Smith

Martin Workman, Alt. to T. Deegan

Guests:

Tomas Sanchez, Sandia National Laboratories

David Hague, NFPA Staff Liaison

NFPA 13 -2019 A2018 SSD Task Groups

Chapter 4[4] General Requirements Don Hopkins - Chair Louis Guerrazzi Chapter 5[24] Water Supplies

Kevin Kelly - Chair Jim Fantauzzi, Chris LaFleur, James Dockrill, Brian Hoening Chapter 19[11&23] Design Approaches and Calculations John Denhardt - Chair Cecil Bilbo, Bo Hjorth, Steve Scandaliato, Don Hopkins, Joakim Bauer Chapter 20 General Requirements for Storage Steve Wolin - Chair Charlie Bauroth, Larry Keeping, Larry Frank, Jerry Schultz , Rich Gallagher, Martin Workman Chapter 21 Standard Spray Sprinkler Requirements for Storage Applications Roland Huggins - Chair Tracey Bellamy, Stuart Lloyd, Garner Palensky, Sultan Javeri, Carl Anderson, Robert Holliday, Vicky Valentine, Ken Isman, Bill Koffell Chapter 22 CMSA Requirements for Storage Applications Roland Huggins - Chair Tracey Bellamy, Stuart Lloyd, Garner Palensky, Sultan Javeri, Carl Anderson, Robert Holliday, Vicky Valentine, Ken Isman, Bill Koffell Chapter 23 ESFR Requirements for Storage Applications Roland Huggins - Chair Tracey Bellamy, Stuart Lloyd, Garner Palensky, Sultan Javeri, Carl Anderson, Robert Holliday, Vicky Valentine, Ken Isman, Bill Koffell Chapter 24/25 Alternative Sprinkler System Designs for Chapters 21 Through 23 Wes Baker - Chair Will Smith, Mark Hopkins, Elham Klausbruckner, Kerry Bell, George Stanley, Jack Thacker, Mike Sides

Chapter 26 Special Occupancy Requirements

Kevin Kelly - Chair

Jim Fantauzzi, Chris LaFleur

Commodity Classification

Wes Baker – Chair George Stanley,, Mike Sides, Jim Dockrill, Abram Selim, Tom Deegan, Rob Upson, Milosh Puchovsky, Sultan Javeri, Roland Huggins, Kerry Bell, Angele Morcos

Public Input No. 116-NFPA 13-2016 [ Global Input ]

Make the following changes to Chapter 17 to consolidate in-rack requirements as in FR 317.

17.1.7 In-Rack Sprinklers.

17.1.7.1 The number of sprinklers and the pipe sizing on a line of sprinklers in racks shall berestricted only by hydraulic calculations and not by any piping schedule.

17.1.7.2 When in-rack sprinklers are necessary to protect a higher hazard commodity that occupiesonly a portion of the length of a rack, in-rack sprinklers shall be extended a minimum of 8 ft (2.4 m)or one bay, whichever is greater, in each direction along the rack on either side of the higher hazard.

17.1.7.2.1 The in-rack sprinklers protecting the higher hazard shall not be required to be extendedacross the aisle.

17.1.7.3 Where a storage rack, due to its length, requires less than the number of in-rack sprinklersspecified, only those in-rack sprinklers in a single rack need to be included in the calculation.

17.1.7.4 * In-rack Where in-rack sprinklers are installed in longitudinal flues, they shall be located atan intersection of transverse and longitudinal flues while not exceeding the maximum spacingrules.

17.1.7.4.1 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.

17.1.7.4.2 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacingrules.

17.1.7.4.3 , In-rack sprinklers shall be installed with a minimum 6 in. (152 mm) vertical clear spacebetween the in-rack sprinkler deflectors and the top of a tier of storage.

.

17.1.7.4.3 17.1.7.4.4 For storage over 25 ft in height

17.1.7.4.4.1 In-rack sprinklers in longitudinal flues shall be installed

(a) with the deflector located at or below the bottom of horizontal load beams or above or belowother adjacent horizontal rack members, and

(b) such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of the rackuprights.

17.1.7.4.4.2 17.1.10.2.1

Face sprinklers in such racks shall be located within the rack a minimum of 3 in. (76 mm) from rackuprights and no more than 18 in. (460 mm) from the aisle face of storage.

17.1.10.2 In single-, double-, or multiple-row racks, a minimum 6 in. (152 mm) vertical clear spaceshall be maintained between the in-rack sprinkler deflectors and the top of a tier of storage .

17.1.10.2.1


17.1.10.2.2 Such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of therack uprights.

17.2.1.5.1 In-Rack Sprinkler Spacing Clearance. The minimum of 6 in. (152 mm) vertical clear spaceshall be maintained between the sprinkler deflectors and the top of a tier of storage.

17.2.1.5.2 The spacing of in-rack sprinklers shall be in accordance with Figure 17.2.1.2.1(a) throughFigure 17.2.1.2.1(f).

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17.2.1.5.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flueswhile not exceeding the maximum spacing rules.

Delete A.17.2.1.5.3



17.2.2.6 In-Rack Sprinkler Requirements Where CMSA Sprinklers Are Used at Ceiling.

17.2.2.6.1 In-rack sprinklers shall be installed at the first tier level at or above one-half of the storageheight.

17.2.2.6.2 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between thesprinkler deflectors and the top of a tier of storage.

17.2.2.6.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues .

Delete A.17.2.2.6.3

17.2.2.6.4 The maximum horizontal distance between in- rack sprinklers shall be 5 ft (1.5 m).



17.2.3.4.3 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between thesprinkler deflectors and the top of a tier of storage.



Delete A.17.2.3.4.5


17.2.3.4.7 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacingrules .

17.3.1.9 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between the in-racksprinkler deflectors and the top of a tier of storage.

17.3.1.10* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flueswhile not exceeding the maximum spacing rules.

Delete A.17.3.1.10

17.3.1.11 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.

17.3.1.12 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspaci1.10.2ng rules.

17.3.3.4.2 In-rack sprinklers shall be located at the intersection of the longitudinal and transverseflue space.

17.3.3.4.3 Horizontal spacing shall not be permitted to exceed 5 ft (1.5 m) intervals.


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Delete A.17.3.3.4.5


17.3.3.4.7 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacingrules .

Additional Proposed Changes

File Name Description Approved

PC_356.pdf 13-PC_356

Statement of Problem and Substantiation for Public Input

This Public Input appeared as “Reject but Hold” in Public Comment No. 356 of the (A2015 cycle) Second Draft Report.

Submitted on behalf of the SSD Redundancy Task Group. These changes are considered editorial and deletes the parts redundant with 17.1.7.4 (see Committee Statement on FR-317). Also added 6” clearance over top of load for all heights. That was not stated in 17.1.9 like it is in 17.1.10.2 but is in each section (17.2.1.5.1 / 17.2.2.6.2 / 17.2.3.4.3).

Submitter Information Verification

Submitter Full Name: TC ON AUT-SSD

Organization: NFPA

Affilliation: TC on Sprinkler System Discharge Criteria

Street Address:

City:

State:

Zip:

Submittal Date: Mon May 16 10:18:43 EDT 2016


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Public Comment No. 356-NFPA 13-2014 [ Global Input ]

Make the following changes to Chapter 17 to consolidate in-rack requirements as in FR 317.

17.1.7 In-Rack Sprinklers.

17.1.7.1 The number of sprinklers and the pipe sizing on a line of sprinklers in racks shall be restrictedonly by hydraulic calculations and not by any piping schedule.

17.1.7.2 When in-rack sprinklers are necessary to protect a higher hazard commodity that occupiesonly a portion of the length of a rack, in-rack sprinklers shall be extended a minimum of 8 ft (2.4 m) orone bay, whichever is greater, in each direction along the rack on either side of the higher hazard.

17.1.7.2.1 The in-rack sprinklers protecting the higher hazard shall not be required to be extendedacross the aisle.

17.1.7.3 Where a storage rack, due to its length, requires less than the number of in-rack sprinklersspecified, only those in-rack sprinklers in a single rack need to be included in the calculation.

17.1.7.4 * In-rack Where in-rack sprinklers are installed in longitudinal flues, they shall be located atan intersection of transverse and longitudinal flues while not exceeding the maximum spacing rules.

17.1.7.4.1 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, and additionalsprinklers shall be installed between transverse flues to meet the maximum distance rules.


17.1.7.4.3 , In-rack sprinklers shall be installed with a minimum 6 in. (152 mm) vertical clear spacebetween the in-rack sprinkler deflectors and the top of a tier of storage.

.

17.1.7.4.3 17.1.7.4.4 For storage over 25 ft in height

17.1.7.4.4.1 In-rack sprinklers in longitudinal flues shall be installed

(a) with the deflector located at or below the bottom of horizontal load beams or above or below otheradjacent horizontal rack members, and

(b) such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of the rackuprights.

17.1.7.4.4.2 17.1.10.2.1


17.1.10.2 In single-, double-, or multiple-row racks, a minimum 6 in. (152 mm) vertical clear space shallbe maintained between the in-rack sprinkler deflectors and the top of a tier of storage.

17.1.10.2.1


17.1.10.2.2 Such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of therack uprights.

17.2.1.5.1 In-Rack Sprinkler Spacing Clearance. The minimum of 6 in. (152 mm) vertical clearspace shall be maintained between the sprinkler deflectors and the top of a tier of storage.

17.2.1.5.2 The spacing of in-rack sprinklers shall be in accordance with Figure 17.2.1.2.1(a) throughFigure 17.2.1.2.1(f).


Delete A.17.2.1.5.3

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17.2.2.6.1 In-rack sprinklers shall be installed at the first tier level at or above one-half of the storageheight.


17.2.2.6.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues.

Delete A.17.2.2.6.3







Delete A.17.2.3.4.5



17.3.1.9 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between the in-racksprinkler deflectors and the top of a tier of storage.

17.3.1.10* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flueswhile not exceeding the maximum spacing rules.

Delete A.17.3.1.10

17.3.1.11 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, and additionalsprinklers shall be installed between transverse flues to meet the maximum distance rules.

17.3.1.12 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspaci1.10.2ng rules.

17.3.3.4.2 In-rack sprinklers shall be located at the intersection of the longitudinal and transverse fluespace.

17.3.3.4.3 Horizontal spacing shall not be permitted to exceed 5 ft (1.5 m) intervals.



Delete A.17.3.3.4.5


2 of 4 5/13/2016 3:10 PM

Page 13 of 1114



Statement of Problem and Substantiation for Public Comment

Submitted on behalf of the SSD Redundancy Task Group. These changes are considered editorial and deletes the parts redundant with 17.1.7.4 (see Committee Statement on FR-317). Also added 6” clearance over top of load for all heights. That was not stated in 17.1.9 like it is in 17.1.10.2 but is in each section (17.2.1.5.1 / 17.2.2.6.2 / 17.2.3.4.3)

Related Public Comments for This Document

Related Comment Relationship

Public Comment No. 261-NFPA 13-2014 [Global Input]

Public Comment No. 262-NFPA 13-2014 [Chapter 14]






Public Comment No. 346-NFPA 13-2014 [Section No. 16.3]


Related Item

First Revision No. 317-NFPA 13-2013 [Section No. 17.1.7.4]


Submitter Full Name: Kenneth Linder

Organization: Swiss Re

Street Address:

City:

State:

Zip:

Submittal Date: Fri May 16 16:25:20 EDT 2014

Committee Statement

CommitteeAction:

Rejected but held

Resolution: The concept of limiting the redundancy in chapters 12-21 of NFPA has been discussed throughout thisrevision cycle. While the TC is in general support of this concept, making these redundancy revisions atthe Second Phase of the cycle is not appropriate. The reject but hold action for this item will allow theTC on Discharge Criteria to submit the concept to the correlating committee for review and refinementbefore proceeding into the 2019 edition revision cycle.


3 of 4 5/13/2016 3:10 PM

Page 14 of 1114

Copyright Assignment

I, Kenneth Linder, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Comment (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Comment in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Comment and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Kenneth Linder, and I agree to be legally bound by the above Copyright Assignment and the terms andconditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


4 of 4 5/13/2016 3:10 PM

Page 15 of 1114


Add a new Section 12.1.5

12.1.5 Fire Protection of Steel Columns Within Storage

See Section C.10.

12.1.5.1 Where storage heights are in excess of 15 ft (4.6 m), protection of building columns located whollyor partially within the rack footprint inclusive of flue spaces or within 12 in. (305 mm) of the footprint shall beprotected in accordance with one of the following:

(1) 1-hour fireproofing

(2) In-rack sprinklers

(3) Sidewall sprinklers at the 15 ft (4.6 m) elevation, pointed toward one side of the steel column

(4) Provision of ceiling sprinkler density for a minimum of 2000 ft2 (186 m2) with ordinary 165°F (74°C) orhigh-temperature 286°F (141°C) rated sprinklers as shown in Table 12.1.5.1 for storage heights above15 ft (4.6 m), up to and including 20 ft (6.1 m)

(5) Provision of CMSA or ESFR ceiling sprinkler protection

Table 12.1.5.1 Ceiling Sprinkler Densities for Protection of Steel Building Columns


Aisle Width

4 ft (1.2 m) 8 ft (2.4 m)

gpm/ft2 (L/min)/m2 gpm/ft2 (L/min)/m2

Class I 0.37 15.1 0.33 13.5

Class II 0.44 17.9 0.37 15.1

Class III 0.49 20.0 0.42 17.1

Class IV and Group A Plastics 0.68 27.7 0.57 23.2

12.1.5.1.1 Columns within Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage of Class Ithrough Class IV Commodities and Group A Plastics shall not require protection.

12.1.5.2 Where storage heights are in excess of 15 ft (4.6 m) and vertical rack members support thebuilding structure, the vertical rack members shall be protected in accordance with one of the options in12.1.5.1.

12.1.5.2.1 Where rubber tire storage exceeds 20 ft (6.1 m) in height, the vertical rack members shall beprotected by two sidewall sprinklers, one at the top of the column and the other at a 15 ft (4.6 m) level, bothdirected to the side of the column

12.1.5.3 The flow from a column sprinkler(s) shall be permitted to be omitted from the sprinkler systemhydraulic calculations.

12.1.5.4 Where pallets are stored in cut-off rooms, columns shall be protected in accordance with section12.1.5.1 options (1) or (3).

Delete existing sections as follows:

12.12.2.2.4.1 (5)

14.3.6

16.1.4 and its subsections

17.1.4 and it's subsections


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18.2 and it's subsections



PC_261.pdf 13-PC_261



This revision is proposed on behalf of the SSD redundancy task group and is considered editorial. Columns protection criteria is currently scattered in Chapters 12, 14, 16, 17 and 18 and all the chapters have essentially the same requirements and exemptions. This text is based off of section 16.1.4. The table requirements from that section were updated to include the requirements from Chapter 17 for Group A plastics and sections appropriate to pallet and rubber tire storage added. This new section consolidates all the requirements in a single section in Chapter 12 as a general requirement.



Organization: NFPA


Street Address:

City:

State:

Zip:



5 of 947 7/1/2016 7:11 AM

Page 17 of 1114


Add a new Section 12.1.5

12.1.5 Fire Protection of Steel Columns Within Storage

See Section C.10.

12.1.5.1 Where storage heights are in excess of 15 ft (4.6 m), protection of building columns located wholly orpartially within the rack footprint inclusive of flue spaces or within 12 in. (305 mm) of the footprint shall beprotected in accordance with one of the following:

1-hour fireproofing1.

In-rack sprinklers2.

Sidewall sprinklers at the 15 ft (4.6 m) elevation, pointed toward one side of the steel column3.

Provision of ceiling sprinkler density for a minimum of 2000 ft2 (186 m2) with ordinary 165°F (74°C) orhigh-temperature 286°F (141°C) rated sprinklers as shown in Table 12.1.5.1 for storage heights above15 ft (4.6 m), up to and including 20 ft (6.1 m)

4.

Provision of CMSA or ESFR ceiling sprinkler protection5.

Table 12.1.5.1 Ceiling Sprinkler Densities for Protection of Steel Building Columns


Aisle Width

4 ft (1.2 m) 8 ft (2.4 m)


Class I 0.37 15.1 0.33 13.5

Class II 0.44 17.9 0.37 15.1

Class III 0.49 20.0 0.42 17.1

Class IV and Group A Plastics 0.68 27.7 0.57 23.2

12.1.5.1.1 Columns within Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage of Class Ithrough Class IV Commodities and Group A Plastics shall not require protection.

12.1.5.2 Where storage heights are in excess of 15 ft (4.6 m) and vertical rack members support the buildingstructure, the vertical rack members shall be protected in accordance with one of the options in 12.1.5.1.

12.1.5.2.1 Where rubber tire storage exceeds 20 ft (6.1 m) in height, the vertical rack members shall beprotected by two sidewall sprinklers, one at the top of the column and the other at a 15 ft (4.6 m) level, bothdirected to the side of the column

12.1.5.3 The flow from a column sprinkler(s) shall be permitted to be omitted from the sprinkler system hydrauliccalculations.

12.1.5.4 Where pallets are stored in cut-off rooms, columns shall be protected in accordance with section12.1.5.1 options (1) or (3).

Delete existing sections as follows:

12.12.2.2.4.1 (5)

14.3.6

16.1.4 and its subsections

17.1.4 and it's subsections


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Page 18 of 1114

18.2 and it's subsections

.


This revision is proposed on behalf of the SSD redundancy task group and is considered editorial. Columns protection criteria is currently scattered in Chapters 12, 14, 16, 17 and 18 and all the chapters have essentially the same requirements and exemptions. This text is based off of section 16.1.4. The table requirements from that section were updated to include the requirements from Chapter 17 for Group A plastics and sections appropriate to pallet and rubber tire storage added. This new section consolidates all the requirements in a single section in Chapter 12 as a general requirement.



Public Comment No. 262-NFPA 13-2014 [Chapter 14] Both apply to redundant and duplicated text.

Public Comment No. 334-NFPA 13-2014 [Global Input] All consolidate or eliminate redundant/duplicate text

Public Comment No. 327-NFPA 13-2014 [Global Input] All apply to redundant and duplicate text


Public Comment No. 355-NFPA 13-2014 [Global Input] All address redundant and repeated text

Public Comment No. 346-NFPA 13-2014 [Section No.16.3]

Public Comment No. 342-NFPA 13-2014 [Global Input]All consolidate or elminate duplicate or redundanttext.

Related Item

Public Input No. 352-NFPA 13-2013 [Section No. 16.1.4]




Street Address:

City:

State:

Zip:

Submittal Date: Wed May 14 15:26:20 EDT 2014

Committee Statement

CommitteeAction:

Rejected but held



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3 of 3 5/13/2016 3:13 PM

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Replace Chapter 15 First Draft Text with the following -- move and renumber existing annex materialto match that below.

Chapter 15 Protection for Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage ofPlastic and Rubber Commodities

15.1 General. This chapter shall apply to palletized, solid-piled, bin box, shelf, or back-to-back shelfstorage of plastic and rubber commodities. The requirements of Chapter 12 shall apply unlessmodified by this chapter.

15.1.1* Storage Conditions. The design of the sprinkler system shall be based on those conditionsthat routinely or periodically exist in a building and create the greatest water demand, which includethe following:

1.Pile height

2.Clearance to ceiling

3.Pile stability

4.Array

15.1.2 15.2.4 Group B plastics and free-flowing Group A plastics shall be protected in the samemanner as a Class IV commodity. (See Chapter 14 for protection of these storage commodities withspray sprinklers.)

15.1.3 15.2.5 Group C plastics shall be protected in the same manner as a Class III commodity. (SeeChapter 14 for protection of these storage commodities with spray sprinklers.)

15.2 Protection Criteria for Group A Plastics

15.2.1* Control Mode Density/Area Sprinkler Protection Criteria for Palletized, Solid-Piled, Bin Box,Shelf, or Back-to-Back Shelf Storage of Plastic and Rubber Commodities.

15.2.1.1 For the storage of Group A plastics stored 5 ft (1.5 m) or less in height, the sprinkler designcriteria for miscellaneous storage specified in Chapter 13 shall be used. The protection criteria inChapter 13 shall be acceptable for storage of Group A plastic commodities up to and including 5 ft(1.5 m) in height. (See Table 13.2.1 for specific Group A plastic storage height protection criteria.)

15.2.1.2* Protection for plastic and rubber commodities shall be in accordance with Section 15.2.The decision tree shown in Figure 15.2.1.2 shall be used to determine the protection criteriain eachspecific situation, subject to the following limitations:

1.Commodities that are stored palletized, solid piled, or in bin boxes up to 25 ft (7.6 m) in height.

2.Commodities that are stored in shelf storage up to 15 ft (4.6 m) in height.

3.Commodities that are stored using back-to-back shelf storage up to 15 ft (4.6 m) in height. Theminimum aisle width shall be 60 in. (1524 mm). The design criteria shall be in accordance with Table15.2.2. The back-to-back shelf shall have a full height solid vertical transverse barrier of 3⁄8 in. (9.5mm) plywood or particleboard, 22 gauge sheet metal, or equivalent, from face of aisle to face ofaisle, spaced at a maximum 45 ft (13.7 m) interval. The transverse barrier shall be permitted toterminate at the longitudinal barrier.

Table 15.2.1.2 Back-to-Back Shelf Storage of Cartoned Unexpanded Group A Plastics

Storage Height Ceiling HeightProtection

Ft M ft m


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Ft M ft m

Over 5 up to 8 1.5/2.4 Up to 14 4.3 Ordinary Hazard Group 2

Up to 12 3.7 Up to 15 4.6 0.45 gpm/ft2 over 2500 ft2 18.3 mm/min/232 m2



Figure 15.2.1.2 Decision Tree. (Note: Use existing Figure 15.2.2 and change Table references from15.2.6 to 15.2.1.4 (a) and (b))

15.2.1.3* Factors affecting protection requirements such as closed/open array, clearance to ceiling,and stable/unstable piles shall be applicable only to storage of Group A plastics. This decision treealso shall be used to determine protection for commodities that are not wholly Group A plastics butcontain such quantities and arrangements of the same that they are deemed more hazardous thanClass IV commodities.

15.2.1.4 6* Design areas and densities for the appropriate storage configuration shall be selectedfrom Table 15.2.1.4 6 (a) or Table 15.2.1.4 6 (b) as appropriate.

Table 15.2.1.4 6 (a) Design Densities for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group APlastic Commodities (U.S. Customary Units)

Maximum Storage Height

.

(ft)

Roof/CeilingHeight (ft)

Density (g

A B C

>5 to ≤12

Up to 15 0.2 EH2 0.3 E

>15 to 20 0.3 0.6 0.5 E

>20 to 32 0.4 0.8 0.6 0

15

Up to 20 0.3 0.6 0.5

>20 to 25 0.4 0.8 0.6 0

>25 to 35 0.45 0.9 0.7 0

20

Up to 25 0.4 0.8 0.6 0

>25 to 30 0.45 0.9 0.7 0

>30 to 35 0.6 1.2 0.85

25Up to 30 0.45 0.9 0.7 0

>30 to 35 0.6 1.2 0.85

>30 to 35 0.6 1.2 0.85 0.7

Notes:

(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained asrequired.

(2) Column designations correspond to the configuration of plastics storage as follows:

A: (1) Nonexpanded, unstable

(2) Nonexpanded, stable, solid unit load

B: Expanded, exposed, stable

C: (1) Expanded, exposed, unstable


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(2) Nonexpanded, stable, cartoned

D: Expanded, cartoned, unstable

E: (1) Expanded, cartoned, stable

(2) Nonexpanded, stable, exposed

(3) EH1 = Density required by Figure 13.2.1 for Curve EH1

EH2 = Density required by Figure 13.2.1 for Curve EH2

(4) Roof/ceiling height >35 ft is not permitted.

Table 15.2.1.4 6 (b) Design Densities for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group APlastic Commodities (S.I. Units)


.

(m)

Roof/Ceiling Height

.

(m)

Density

.

(mm/min)

A B C D E

Up to 4.6 8.2 EH2 12.2 EH1 EH2

>1.5 to ≤3.6 >4.6 to 6.1 12.2 24.4 20.4 EH2 EH2

>6.1 to 9.8 16.3 32.6 24.4 18.3 28.5

Up to 6.1 12.2 24.4 20.4 16.3 18.3

4.6 >6.1 to 7.6 16.3 32.6 24.4 18.3 28.5

>7.6 to 10.7 18.3 36.7 28.5 22.4 34.6

Up to 7.6 16.3 32.6 24.4 18.3 28.5

6.1 >7.6 to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

7.6Up to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

Notes:

(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained asrequired.













15.2.1.5 7 The ceiling-only protection criteria specified in Chapter 17 for rack storage of Group Aplastic commodities shall be permitted to be used for solid-piled and palletized storage of the same


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commodity at the same height and clearance to ceiling.

15.2.1.6 8* For Table 15.2.1.4 6 (a) and Table 15.2.1.4 6 (b), the design areas shall be as follows:

1.The area shall be a minimum of 2500 ft2 (232 m2).

2.Where Table 15.2.1.4 6 (a) and Table 15.2.1.4 6 (b) allow densities and areas to be selected inaccordance with Curve EH1 and Curve EH2 of Figure 13.2.1, any density/area from the curves inFigure 13.2.1 shall be permitted. When selecting a point from the EH1 or EH2 density/area curves ofFigure 13.2.1, the following area reductions shall be permitted:

1.For K-8.0 (115) sprinklers used with Curve EH1, the design area shall be permitted to be reduced by

25 percent, but not below 2000 ft2 (186 m2), where high temperature sprinklers are used.

2.For K-11.2 (160) or larger sprinklers, the design area shall be permitted to be reduced by 25

percent, but not below 2000 ft2 (186 m2), regardless of temperature rating.

3.For closed arrays, the area shall be permitted to be reduced to 2000 ft2 (186 m2).

15.2.1.7 9* Interpolation of densities between storage heights shall be permitted.

15.2.1.7 9.1 Densities shall be based on the 2500 ft2 (232 m2) design area.

15.2.1.7 9.2 Interpolation of ceiling/roof heights shall not be permitted.

15.2.1.8 10 For storage of Group A plastics between 5 ft (1.5 m) and 12 ft (3.7 m) in height, theinstallation requirements for extra hazard systems shall apply.

15.2.2 3 Control Mode Specific Application (CMSA) Sprinklers for Palletized or Solid-Piled Storage ofGroup A Plastic Commodities.

15.2.2. 3.1 Protection unexpanded and expanded commodities shall be in accordance with Table15.2.2 3.1.

Table 15.2.2.1 CMSA Sprinkler Design Criteria for Palletized and Solid-Piled Storage of Group APlastic Commodities

StorageArrangement

CommodityClass

MaximumStorageHeight

MaximumCeiling/Roof

Height K-Factor/OrientationType

ofSystem

Numof DesSprink

ft m ft m

PalletizedCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 25

16.8 (240)

.

Upright

Wet 15

19.6 (280)

.

Pendent

Wet 15

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15

19.6 (280)

. Wet 15


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height K-Factor/Orientation Type ofSystem

Numof DesSprink

ft m ft m

Pendent

30 9.1 35 10.7

19.6 (280)

.

Pendent

Wet 15

35 10.6 40 12.1

19.6 (280)

.

Pendent

Wet 15

Solid piledCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 15

16.8 (240)

.

Upright

Wet 15

19.6 (280)

.

Pendent

Wet 15

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15

19.6 (280)

.

Pendent

Wet 15

30 9.1 35 10.7

19.6 (280)

.

Pendent

Wet 15

35 10.6 40 12.1

19.6 (280)

.

Pendent

Wet 15

PalletizedExposed

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 25

16.8 (240)

.

Upright

Wet 15

25 7.6 30 9.116.8 (240)

. Wet 15


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StorageArrangement

CommodityClass


MaximumCeiling/Roof


Numof DesSprink

ft m ft m

Upright

Cartoned orexposed

expandedplastics

18 5.5 26 7.9

11.2 (160)

.

Upright

Wet 15

16.8 (240)

.

Upright

Wet 15

Solid piled

Cartoned orexposed

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 15

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15

15.3.2 Protection shall be provided as specified in Table 15.2.23.1 or appropriate NFPA standards interms of minimum operating pressure and the number of sprinklers to be included in the designarea.

15.2.2.2 3.3 Open Wood Joist Construction.

15.2.2 3.3.1 Where CMSA sprinklers are installed under open wood joist construction, their minimumoperating pressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8(240) sprinkler.

15.2.2. 3.3.2 Where each joist channel of open wood joist construction is fully firestopped to its fulldepth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 15.2.2 3.1 shallbe permitted to be used.

15.2.2.3.4 Preaction Systems. For the purpose of using Table 15.2.2 3.1, preaction systems shall beclassified as dry pipe systems.

Note: Separate Comment to move 15.3.5 to Chapter 12.

15.3.5 Building steel shall not require special protection where Table 15.3.1 is applied as appropriatefor the storage configuration.

15.2.2.4 Early Suppression Fast-Response (ESFR) Sprinklers for Palletized or Solid-Piled Storage ofGroup A Plastic Commodities.

15.2,2.4.1 Protection of palletized and solid-piled storage of cartoned or exposed, expanded orunexpanded plastic and cartoned expanded or exposed expanded plastic shall be in accordancewith Table 15.2.2.4.1.

Table 15.2.2.4.1 ESFR Protection of Palletized and Solid-Piled Storage of Group A PlasticCommodities

StorageArrangement Commodity


MaximumCeiling/Roof

HeightNominalK-Factor Orientation

MinimumOperatingPressure

ft m ft m psi bar

Palletized andsolid-piledstorage (noopen-top

Cartonedunexpanded

plastic20 6.1 25 7.6

14.0

.

(200)

Upright/pendent

50 3.4


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MaximumCeiling/Roof



ft m ft m psi bar

containers)

16.8

.

(240)

Upright/pendent

35 2.4

22.4

.

(320)

Pendent 25 1.7

25.2

.

(360)

Pendent 15 1.0

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

22.4

.

(320)

Pendent 25 1.7

25.2

.

(360)

Pendent 15 1.0

35 10.7

14.0

.

(200)

Upright/pendent

75 5.2

16.8

.

(240)

Upright/pendent

52 3.6

22.4

.

(320)

Pendent 35 2.4

25.2

.

(360)

Pendent 20 1.4

40 12.2

16.8

.

(240)

Pendent 52 3.6


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MaximumCeiling/Roof



ft m ft m psi bar

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 25 1.7

45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

25 7.6

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

22.4

.

(320)

Pendent 25 1.7

25.2

.

(360)

Pendent 15 1.0

32 9.8

14.0

.

(200)

Upright/pendent

60 4.1

16.8

.

(240)

Upright/pendent

42 2.9

35 10.7

14.0

.

(200)

Upright orpendent

75 5.2

16.8

.

(240)

Upright/pendent

52 3.6


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MaximumCeiling/Roof



ft m ft m psi bar

22.4

.

(320)

Pendent 35 2.4

25.2

.

(360)

Pendent 20 1.4

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 25 1.7

45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

30 9.1

35 10.7

14.0

.

(200)

Upright/pendent

75 5.2

16.8

.

(240)

Upright/pendent

52 3.6

22.4

.

(320)

Pendent 35 2.4

25.2

.

(360)

Pendent 20 1.4

40 12.2

16.8

.

(240)

Pendent 52 3.6


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MaximumCeiling/Roof



ft m ft m psi bar

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 25 1.7

45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

35 10.7

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 25 1.7

45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

40 12.2 45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

Exposedunexpanded

plastic20 6.1 25 7.6

14.0

.

(200)

Pendent 50 3.4


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MaximumCeiling/Roof



ft m ft m psi bar

16.8

.

(240)

Pendent 35 2.4

30 9.1

14.0

.

(200)

Pendent 50 3.4

16.8

.

(240)

Pendent 35 2.4

35 10.7

14.0

.

(200)

Pendent 75 5.2

16.8

.

(240)

Pendent 52 3.6

40 12.2

16.8

.

(240)

Pendent 52 3.6

25 7.6

30 9.1

14.0

.

(200)

Pendent 50 3.4

16.8

.

(240)

Pendent 35 2.4

32 9.8

14.0

.

(200)

Pendent 60 4.1

16.8

.

(240)

Pendent 42 2.9

35 10.7

14.0

.

(200)

Pendent 75 5.2

16.8

.

(240)

Pendent 52 3.6


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MaximumCeiling/Roof



ft m ft m psi bar

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 50 3.4

25.2

.

(360)

Pendent 50 3.4

30 9.1

35 10.7

14.0

.

(200)

Pendent 75 5.2

16.8

.

(240)

Pendent 52 3.6

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 50 3.4

25.2

.

(360)

Pendent 50 3.4

35 10.7 40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 50 3.4

25.2

.

(360)

Pendent 50 3.4

Cartonedexpanded

plastic20 6.1 25 7.6

14.0

.

(200)

Upright/pendent

50 3.4


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MaximumCeiling/Roof



ft m ft m psi bar

16.8

.

(240)

Upright/pendent

35 2.4

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

25 7.6

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

32 9.8

14.0

.

(200)

Pendent 60 4.1

16.8

.

(240)

Upright/pendent

42 2.9

Exposed*expanded

plastic25 7.6 40 12.2

25.2

.

(360)

Pendent 60 4.1

*Applies to closed array storage only.

15.4.2 ESFR Sprinkler systems shall be designed such that the minimum operating pressure is notless than that indicated in Table 15.4.1 for type of storage, commodity, storage height, and buildingheight involved.

15.4.3 The design area shall consist of the most hydraulically demanding area of 12 sprinklers,consisting of four sprinklers on each of three branch lines.

15.2.2.4.4 Special Designs for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group A PlasticCommodities. (Reserved)

Note: Separated Comment to Consolidate all high-exansion foam sections into Section 12.11.

15.5 High-Expansion Foam — Reduction in Ceiling Density. A reduction in ceiling density to one-halfthat required for Class I through Class IV commodities, idle pallets, or plastics shall be permitted

without revising the design area, but the density shall be no less than 0.15 gpm/ft2 (6.1 mm/min).




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PC_327.pdf 13-PC_327



Submitted on behalf of the SSD Redundancy Task Group. Location has meaning and context. Information from the Chapter Title and Section Headings does not need to be repeated throughout the Chapter There is no need to reference the sprinkler type. storage type or commodity unless the section only applies to a subset. Revised numbering to be consistent with the format of Chapters 16 and 17. Other changes to eliminate redundancy.



Organization: NFPA


Street Address:

City:

State:

Zip:



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Replace Chapter 15 First Draft Text with the following -- move and renumber existing annex material tomatch that below.

Chapter 15 Protection for Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage ofPlastic and Rubber Commodities

15.1 General. This chapter shall apply to palletized, solid-piled, bin box, shelf, or back-to-back shelfstorage of plastic and rubber commodities. The requirements of Chapter 12 shall apply unless modifiedby this chapter.

15.1.1* Storage Conditions. The design of the sprinkler system shall be based on those conditions thatroutinely or periodically exist in a building and create the greatest water demand, which include thefollowing:

Pile height1.

Clearance to ceiling2.

Pile stability3.

Array4.

15.1.2 15.2.4 Group B plastics and free-flowing Group A plastics shall be protected in the samemanner as a Class IV commodity. (See Chapter 14 for protection of these storage commodities withspray sprinklers.)

15.1.3 15.2.5 Group C plastics shall be protected in the same manner as a Class III commodity. (SeeChapter 14 for protection of these storage commodities with spray sprinklers.)

15.2 Protection Criteria for Group A Plastics

15.2.1* Control Mode Density/Area Sprinkler Protection Criteria for Palletized, Solid-Piled, Bin Box,Shelf, or Back-to-Back Shelf Storage of Plastic and Rubber Commodities.

15.2.1.1 For the storage of Group A plastics stored 5 ft (1.5 m) or less in height, the sprinkler designcriteria for miscellaneous storage specified in Chapter 13 shall be used. The protection criteria inChapter 13 shall be acceptable for storage of Group A plastic commodities up to and including 5 ft (1.5m) in height. (See Table 13.2.1 for specific Group A plastic storage height protection criteria.)

15.2.1.2* Protection for plastic and rubber commodities shall be in accordance with Section 15.2. Thedecision tree shown in Figure 15.2.1.2 shall be used to determine the protection criteriain each specificsituation, subject to the following limitations:

Commodities that are stored palletized, solid piled, or in bin boxes up to 25 ft (7.6 m) in height.1.

Commodities that are stored in shelf storage up to 15 ft (4.6 m) in height.2.

Commodities that are stored using back-to-back shelf storage up to 15 ft (4.6 m) in height. Theminimum aisle width shall be 60 in. (1524 mm). The design criteria shall be in accordance withTable 15.2.2. The back-to-back shelf shall have a full height solid vertical transverse barrier of 3⁄8in. (9.5 mm) plywood or particleboard, 22 gauge sheet metal, or equivalent, from face of aisle toface of aisle, spaced at a maximum 45 ft (13.7 m) interval. The transverse barrier shall bepermitted to terminate at the longitudinal barrier.

3.

Table 15.2.1.2 Back-to-Back Shelf Storage of Cartoned Unexpanded Group A Plastics


Ft M ft m

Over 5 up to 8 1.5/2.4 Up to 14 4.3 Ordinary Hazard Group 2



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Ft M ft m



Figure 15.2.1.2 Decision Tree. (Note: Use existing Figure 15.2.2 and change Table references from 15.2.6to 15.2.1.4 (a) and (b))

15.2.1.3* Factors affecting protection requirements such as closed/open array, clearance to ceiling, andstable/unstable piles shall be applicable only to storage of Group A plastics. This decision tree alsoshall be used to determine protection for commodities that are not wholly Group A plastics but containsuch quantities and arrangements of the same that they are deemed more hazardous than Class IVcommodities.

15.2.1.4 6* Design areas and densities for the appropriate storage configuration shall be selected fromTable 15.2.1.4 6 (a) or Table 15.2.1.4 6 (b) as appropriate.

Table 15.2.1.4 6 (a) Design Densities for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group APlastic Commodities (U.S. Customary Units)


.

(ft)

Roof/Ceiling Height (ft)Density (gpm/ft2)

A B C D E

>5 to ≤12

Up to 15 0.2 EH2 0.3 EH1 EH2

>15 to 20 0.3 0.6 0.5 EH2 EH2

>20 to 32 0.4 0.8 0.6 0.45 0.7

15

Up to 20 0.3 0.6 0.5 0.4 0.45

>20 to 25 0.4 0.8 0.6 0.45 0.7

>25 to 35 0.45 0.9 0.7 0.55 0.85

20

Up to 25 0.4 0.8 0.6 0.45 0.7

>25 to 30 0.45 0.9 0.7 0.55 0.85

>30 to 35 0.6 1.2 0.85 0.7 1.1

25Up to 30 0.45 0.9 0.7 0.55 0.85

>30 to 35 0.6 1.2 0.85 0.7 1.1

Notes:

(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained as required.












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Table 15.2.1.4 6 (b) Design Densities for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group APlastic Commodities (S.I. Units)


.

(m)

Roof/Ceiling Height

.

(m)

Density

.

(mm/min)

A B C D E

Up to 4.6 8.2 EH2 12.2 EH1 EH2

>1.5 to ≤3.6 >4.6 to 6.1 12.2 24.4 20.4 EH2 EH2

>6.1 to 9.8 16.3 32.6 24.4 18.3 28.5

Up to 6.1 12.2 24.4 20.4 16.3 18.3

4.6 >6.1 to 7.6 16.3 32.6 24.4 18.3 28.5

>7.6 to 10.7 18.3 36.7 28.5 22.4 34.6

Up to 7.6 16.3 32.6 24.4 18.3 28.5

6.1 >7.6 to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

7.6Up to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

Notes:

(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained as required.













15.2.1.5 7 The ceiling-only protection criteria specified in Chapter 17 for rack storage of Group A plasticcommodities shall be permitted to be used for solid-piled and palletized storage of the same commodityat the same height and clearance to ceiling.

15.2.1.6 8* For Table 15.2.1.4 6 (a) and Table 15.2.1.4 6 (b), the design areas shall be as follows:

The area shall be a minimum of 2500 ft2 (232 m2).1.

Where Table 15.2.1.4 6 (a) and Table 15.2.1.4 6 (b) allow densities and areas to be selected inaccordance with Curve EH1 and Curve EH2 of Figure 13.2.1, any density/area from the curves inFigure 13.2.1 shall be permitted. When selecting a point from the EH1 or EH2 density/area curves

2.


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of Figure 13.2.1, the following area reductions shall be permitted:

For K-8.0 (115) sprinklers used with Curve EH1, the design area shall be permitted to be

reduced by 25 percent, but not below 2000 ft2 (186 m2), where high temperature sprinklersare used.

1.

For K-11.2 (160) or larger sprinklers, the design area shall be permitted to be reduced by

25 percent, but not below 2000 ft2 (186 m2), regardless of temperature rating.

2.

For closed arrays, the area shall be permitted to be reduced to 2000 ft2 (186 m2).3.

15.2.1.7 9* Interpolation of densities between storage heights shall be permitted.

15.2.1.7 9.1 Densities shall be based on the 2500 ft2 (232 m2) design area.

15.2.1.7 9.2 Interpolation of ceiling/roof heights shall not be permitted.

15.2.1.8 10 For storage of Group A plastics between 5 ft (1.5 m) and 12 ft (3.7 m) in height, theinstallation requirements for extra hazard systems shall apply.

15.2.2 3 Control Mode Specific Application (CMSA) Sprinklers for Palletized or Solid-Piled Storage ofGroup A Plastic Commodities.

15.2.2. 3.1 Protection unexpanded and expanded commodities shall be in accordance with Table 15.2.23.1.

Table 15.2.2.1 CMSA Sprinkler Design Criteria for Palletized and Solid-Piled Storage of Group A PlasticCommodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof


Numberof DesignSprinklers

MOpP

ft m ft m p

PalletizedCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 25 2

16.8 (240)

.

Upright

Wet 15 2

19.6 (280)

.

Pendent

Wet 15 1

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15 2

19.6 (280)

.

Pendent

Wet 15 1

30 9.1 35 10.7

19.6 (280)

.

Pendent

Wet 15 2

35 10.6 40 12.1

19.6 (280)

.

Pendent

Wet 15 3


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15.3.2 Protection shall be provided as specified in Table 15.2.23.1 or appropriate NFPA standards interms of minimum operating pressure and the number of sprinklers to be included in the design area.

15.2.2.2 3.3 Open Wood Joist Construction.

15.2.2 3.3.1 Where CMSA sprinklers are installed under open wood joist construction, their minimumoperating pressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8(240) sprinkler.

15.2.2. 3.3.2 Where each joist channel of open wood joist construction is fully firestopped to its fulldepth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 15.2.2 3.1 shall bepermitted to be used.

15.2.2.3.4 Preaction Systems. For the purpose of using Table 15.2.2 3.1, preaction systems shall beclassified as dry pipe systems.

Note: Separate Comment to move 15.3.5 to Chapter 12.

15.3.5 Building steel shall not require special protection where Table 15.3.1 is applied as appropriatefor the storage configuration.

15.2.2.4 Early Suppression Fast-Response (ESFR) Sprinklers for Palletized or Solid-Piled Storage ofGroup A Plastic Commodities.

15.2,2.4.1 Protection of palletized and solid-piled storage of cartoned or exposed, expanded orunexpanded plastic and cartoned expanded or exposed expanded plastic shall be in accordance withTable 15.2.2.4.1.

Table 15.2.2.4.1 ESFR Protection of Palletized and Solid-Piled Storage of Group A Plastic Commodities



MaximumCeiling/Roof



ft m ft m psi bar

Palletized andsolid-piledstorage (noopen-topcontainers)

Cartonedunexpanded

plastic20 6.1

25 7.6

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

22.4

.

(320)

Pendent 25 1.7

25.2

.

(360)

Pendent 15 1.0

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

22.4

.

(320)

Pendent 25 1.7


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*Applies to closed array storage only.

15.4.2 ESFR Sprinkler systems shall be designed such that the minimum operating pressure is notless than that indicated in Table 15.4.1 for type of storage, commodity, storage height, and buildingheight involved.

15.4.3 The design area shall consist of the most hydraulically demanding area of 12 sprinklers,consisting of four sprinklers on each of three branch lines.

15.2.2.4.4 Special Designs for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group A PlasticCommodities. (Reserved)

Note: Separated Comment to Consolidate all high-exansion foam sections into Section12.11.

15.5 High-Expansion Foam — Reduction in Ceiling Density. A reduction in ceiling density to one-halfthat required for Class I through Class IV commodities, idle pallets, or plastics shall be permitted

without revising the design area, but the density shall be no less than 0.15 gpm/ft2 (6.1 mm/min).


Submitted on behalf of the SSD Redundancy Task Group. Location has meaning and context. Information from the Chapter Title and Section Headings does not need to be repeated throughout the Chapter There is no need to reference the sprinkler type. storage type or commodity unless the section only applies to a subset. Revised numbering to be consistent with the format of Chapters 16 and 17. Other changes to eliminate redundancy.



Public Comment No. 261-NFPA 13-2014 [Global Input] All apply to redundant and duplicate text








Related Item





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected but held

Resolution: The concept of limiting the redundancy in chapters 12-21 of NFPA has been discussed throughout thisrevision cycle. While the TC is in general support of this concept, making these redundancy revisions at


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Page 40 of 1114

the Second Phase of the cycle is not appropriate. The reject but hold action for this item will allow theTC on Discharge Criteria to submit the concept to the correlating committee for review and refinementbefore proceeding into the 2019 edition revision cycle.





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(PI-399) 16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(PI-400) 16.2.3.2 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless thesolid shelf racks are protected with in-rack sprinklers in accordance with 16.1.6 . Where solid shelves areused, in-rack sprinklers shall be installed in every level below the highest solid barrier.

(PI-401) 16.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(PI-402) 16.3.3.2.1 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(FR-219) 17.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR0220) 17.2.3.1.2 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR-222) 17.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR-224) 17.3.3.1.1 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unlessthe solid shelf racks are protected with in-rack sprinklers in accordance with 17.1.5. Where solid shelves areused, in-rack sprinklers shall be installed in every level below the highest solid shelf.



PC_80.pdf 13-PC_80



The redundancy task group agrees with this comment. This comment addresses Correlating Committee Note 4 on the use of Open Rack and Note 11 on consistency This comment simply deletes the offending text that conflicts with the classification of open criteria for section 16.2, 16.3, 17.2, and 17.3. This criteria addresses two issues. One is that CMSA and ESFR can be applied when solid shelving is present provided the criteria of 16.1.6 or 17.1.5 is also applied. This criteria is already stated for ESFR in 8.4.6.1.1. PC-81 will add this same text to 8.4.7 on CMSA. The second issue from the deleted criteria is that in-rack sprinklers shall be installed at every level below the highest level. This is addressed by PC 78 and 93 which puts this criteria in 16.1.6 and 17.1.5. Sections 16.2, 16.3, 17.2, and 17.3 are for open racks (synonymous to without solid shelving). In order to emphasis a change in philosophy or at least something never stated, one section (17.3.3.1.1) was added in the 2013 edition to clarify that ESFR could be used with solid shelving. We added it to 17.3 that historically has always been open rack criteria thinking what can it hurt. Now we’ve added similar criteria to all sections on CMSA and ESFR. This has rightly resulted in a challenge that 16.2, 16.3, 17.2, and 17.3 should no longer be called criteria for open racks. This is indeed a valid statement. Instead of throwing out what has always been known as open rack criteria, lets locate the miniscule amount of criteria that is not for open racks in section 8.4 and the general section for solid shelf racks where it rightly belongs. When Solid shelving for any type of system appears, it’s addressed in the general sections 16.1.6 and 17.1.5. Although this section does not say for spray sprinklers, that is the current


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(PI-399) 16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level belowthe highest solid barrier.

(PI-400) 16.2.3.2 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless the solidshelf racks are protected with in-rack sprinklers in accordance with 16.1.6 . Where solid shelves are used,in-rack sprinklers shall be installed in every level below the highest solid barrier.

(PI-401) 16.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level belowthe highest solid barrier.

(PI-402) 16.3.3.2.1 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level belowthe highest solid barrier.

(FR-219) 17.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in every levelbelow the highest solid shelf.

(FR0220) 17.2.3.1.2 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in every levelbelow the highest solid shelf.

(FR-222) 17.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in every levelbelow the highest solid shelf.

(FR-224) 17.3.3.1.1 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless thesolid shelf racks are protected with in-rack sprinklers in accordance with 17.1.5. Where solid shelves are used,in-rack sprinklers shall be installed in every level below the highest solid shelf.


The redundancy task group agrees with this comment.

This comment addresses Correlating Committee Note 4 on the use of Open Rack and Note 11 on consistency

This comment simply deletes the offending text that conflicts with the classification of open criteria for section 16.2, 16.3, 17.2, and 17.3. This criteria addresses two issues. One is that CMSA and ESFR can be applied when solid shelving is present provided the criteria of 16.1.6 or 17.1.5 is also applied. This criteria is already stated for ESFR in 8.4.6.1.1. PC-81 will add this same text to 8.4.7 on CMSA. The second issue from the deleted criteria is that in-rack sprinklers shall be installed at every level below the highest level. This is addressed by PC 78 and 93 which puts this criteria in 16.1.6 and 17.1.5.Sections 16.2, 16.3, 17.2, and 17.3 are for open racks (synonymous to without solid shelving). In order to emphasis a change in philosophy or at least something never stated, one section (17.3.3.1.1) was added in the 2013 edition to clarify that ESFR could be used with solid shelving. We added it to 17.3 that historically has always been open rack criteria thinking what can it hurt. Now we’ve added similar criteria to all sections on CMSA and ESFR. This has rightly resulted in a challenge that 16.2, 16.3, 17.2, and 17.3 should no longer be called criteria for open racks. This is indeed a valid statement. Instead of throwing out what has always been known as open rack criteria, lets locate the miniscule amount of criteria that is not for open racks in section 8.4 and the general section for solid shelf racks where it rightly belongs.

When Solid shelving for any type of system appears, it’s addressed in the general sections 16.1.6 and 17.1.5. Although this section does not say for spray sprinklers, that is the current understanding since it wasn’t until the 2013 edition that it was identified that it also applies equally to ESFR and CMSA. This merits discussion as to whether additional text showing that 16.1.6 and 17.1.5 applies to CMSA and ESFR is warranted. Considering that this will be stated in 8.4.6 and 8.4.7 and that the suggested text on design criteria states all three types of sprinklers, that it is easily understood without any additional text.


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Public Comment No. 81-NFPA 13-2014 [New Section after 8.4.7.1]

Public Comment No. 82-NFPA 13-2014 [New Section after 16.1.6.6]

Public Comment No. 84-NFPA 13-2014 [Section No. 17.1.5.5]



Related Item

Correlating Committee Note No. 4-NFPA 13-2013 [Global Input]


Submitter Full Name: Roland Huggins

Organization: American Fire Sprinkler Association

Street Address:

City:

State:

Zip:

Submittal Date: Wed Mar 26 18:55:18 EDT 2014

Committee Statement

CommitteeAction:

Rejected but held



I, Roland Huggins, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Comment (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Comment in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Comment and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Roland Huggins, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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understanding since it wasn’t until the 2013 edition that it was identified that it also applies equally to ESFR and CMSA. This merits discussion as to whether additional text showing that 16.1.6 and 17.1.5 applies to CMSA and ESFR is warranted. Considering that this will be stated in 8.4.6 and 8.4.7 and that the suggested text on design criteria states all three types of sprinklers, that it is easily understood without any additional text.



Organization: NFPA


Street Address:

City:

State:

Zip:



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Make the following changes to Section 16.2 to eliminate redundancy and duplicatetext.

16.2 Protection Criteria for Open Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height.

16.2.1 Control Mode Density/Area Sprinkler Protection Criteria for Rack Storage of Class IThrough Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.1.1

The area and density for the hydraulically remote area and the water supply shall be determined asspecified in 16.2.1.2 for storage up to 12 ft (3.7 m) and 16.2.1.3 to 16.2.1.3.5 for storage over 12 ft (3.7 m).

16.2.1.2 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Storage Upto 12 ft (3.7 m) in Height.

16.2.1.2.1 The protection criteria for storage up to and including 12 ft (3.7 m) shall be the same asmiscellaneous storage from Chapter 13.

16.2.1.2.2 The protection criteria in Chapter 13 shall be acceptable for storage of Class I through Class IVcommodities up to and including 12 ft (3.7 m) in height. (See Table 13.2.1 for specific Class I through ClassIV storage height protection criteria.)

16.2.1.2.3 For storage 12 ft (3.7 m) or less in height that does not meet the definition of MiscellaneousStorage that is on solid shelf racks, in-rack sprinklers shall be provided in accordance with 16.1.6, andceiling sprinkler protection shall be provided in accordance with Chapter 13.

16.2.1.3 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored StorageOver 12 ft (3.7 m) in Height.

16.2.1.3.1*

Ceiling sprinkler water demand shall be determined in accordance with 16.2.1.3.2 for single- anddouble-row racks or 16.2.1.3.3 for multiple-row racks. (See Section C.14.)

16.2.1.3.2*

For single- or double-row racks for Class I, Class II, Class III, or Class IV commodities, encapsulated ornonencapsulated in single- or double-row racks , ceiling sprinkler water demand in terms of density

[gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling or roof] shall be selected from thedensity/area curves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(g) that are appropriate for eachcommodity and configuration as shown in Table 16.2.1.3.2 and shall be modified as appropriate by16.2.1.3.4 . These requirements shall apply to portable racks arranged in the same manner as single- ordouble-row racks.

Table 16.2.1.3.2 Single- or Double-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25ft (7.6 m)

Height CommodityClass Encapsulated

SprinklersMandatory

In-Rack

Ceiling Sprinkler Wa

Aisles* With In-Rack Sprinklers W

ft m Figure CurvesApplyFigure

16.2.1.3.4.1F

Over 12ft (3.7m) up toandincluding

INo

4 1.2No 16.2.1.3.2(a)

C and D

Yes16.2

8 2.4 A and B

Yes 4 1.2 No 16.2.1.3.2(e) C and D 16.2


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SprinklersMandatory

In-Rack




16.2.1.3.4.1F

20 ft (6.1m)

8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.28 2.4 A and B

Yes4 1.2

No 16.2.1.3.2(e)C and D

16.28 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

8 2.4 A and B

IV

No4 1.2

No 16.2.1.3.2(d)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(g)C and D

8 2.4 A and B

Over 20ft (6.1m) up toandincluding22 ft (6.7m)

I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

8 2.4 A and B

IV

No4 1.2

No 16.2.1.3.2(d)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(g)C and D

8 2.4 A and B


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SprinklersMandatory

In-Rack




16.2.1.3.4.1F


I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

8 2.4 A and B

IV

No4 1.2

1 level

16.2.1.3.2(d)C and D

8 2.4 A and B

Yes4 1.2

16.2.1.3.2(g)C and D

8 2.4 A and B

*See 16.2.1.3.2.1 for interpolation of aisle widths.

Figure 16.2.1.3.2(a) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class INonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(b) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(c) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IIINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(d) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IVNonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(e) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class I and Class II Encapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(f) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class III Encapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(g) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class IV Encapsulated Commodities — Conventional Pallets.

16.2.1.3.2.1*

Design densities for single- and double-row racks shall be selected to correspond to aisle width. (SeeSection C.15.)

(A) For aisle widths between 4 ft (1.2 m) and 8 ft (2.4 m), the rules for 4 ft (1.2 m) aisle width shall be usedor direct linear interpolation between the densities shall be permitted.

(B) The density given for 8 ft (2.4 m) wide aisles shall be applied to aisles wider than 8 ft (2.4 m).


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(C) The density given for 4 ft (1.2 m) wide aisles shall be applied to aisles more narrow than 4 ft (1.2 m)down to 3 1⁄2 ft (1.07 m).

(D) Where aisles are more narrow than 3 1⁄2 ft (1.07 m), racks shall be considered to be multiple-rowracks.

16.2.1.3.3 Multiple-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m).

16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m) with Aisles 8 ft (2.4m) or Wider.

For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, c C eiling

sprinkler water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) ofceiling or roof] shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure16.2.1.3.2(d) that are appropriate for each commodity and configuration as shown in Table 16.2.1.3.3.1and shall be modified as appropriate by 16.2.1.3.4 . These requirements protection criteria shall apply toportable racks arranged in the same manner as multiple-row racks.

Table 16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m), Aisles 8 ft (2.4 m)or Wider and Storage Height Over 12 ft (3.7 m) Up to 25 ft (7.6 m)

Height CommodityClass

Encap-

sulated

SprinklersMandatory

In-Rack

Ceiling Sprinkler Water De

With In-Rack Sprinklers Wit

Figure CurvesApplyFigure

16.2.1.3.4.1

1.25 ×Density Figure


INo

No

16.2.1.3.2(a)

C and D

Yes

No 16.2.1.3.2(a

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c

Yes 1 level 16.2.1.3.2(c) Yes

IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d

Yes 1 level 16.2.1.3.2(d) A and B1.50 ×density


INo

No

16.2.1.3.2(a)

C and D

Yes

No 16.2.1.3.2(a

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c


NAIV

No

1 level

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A nd B1.50 ×density


INo No 16.2.1.3.2(a)

C and D No

No 16.2.1.3.2(a

Yes 1 level 16.2.1.3.2(a) YesNA

II No 1 level 16.2.1.3.2(b) No


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Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


25 ft (7.6m)

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A and B1.50 ×density

NA: Not applicable.

16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles More Narrow Than 8 ft(2.4 m).

For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, C c eiling

sprinkler water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) ofceiling or roof] shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure16.2.1.3.2(g) that are appropriate for each commodity and configuration as shown in Table 16.2.1.3.3.2and shall be modified as appropriate by 16.2.1.3.4. These requirements protection criteria shall apply toportable racks arranged in the same manner as multiple-row racks. (Move to 16.1 and delete fromindividual sections)

Table 16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles Narrower Than 8 ft (2.4m), Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m)


Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1



INo

No

16.2.1.3.2(a)

C and D Yes

No 16.2.1.3.2(a

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b

IIINo 16.2.1.3.2(c) No 16.2.1.3.2(c


IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d

Yes 1 level 16.2.1.3.2(d)1.50 ×density


INo

1 level

16.2.1.3.2(a)

C and D Yes

No

NAYes 16.2.1.3.2(a) Yes

II No 16.2.1.3.2(b) No


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Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


20 ft (6.1m)

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No 16.2.1.3.2(d) No

Yes 16.2.1.3.2(d)1.50 ×density


INo

1 level

16.2.1.3.2(a)

C and D No

No

NA

Yes 16.2.1.3.2(a) Yes

IINo 16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d)1.50 ×density

NA: Not applicable.

16.2.1.3.3.3 Where Class I, Class II, and Class III commodities are encapsulated, ceiling sprinklerdensity shall be 25 percent greater than for nonencapsulated.

16.2.1.3.3.4 Where Class IV commodities are encapsulated, ceiling sprinkler density shall be 50percent greater than for nonencapsulated.

16.2.1.3.4 Ceiling Sprinkler Density Adjustments.

16.2.1.3.4.1 For storage height over 12 ft (3.7 m) up to and including 25 ft (7.6 m) protected withceiling sprinklers only and for storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m)protected with ceiling sprinklers and minimum required in-rack sprinklers, densities obtained fromdesign curves shall be adjusted in accordance with Figure 16.2.1.3.4.1.

Figure 16.2.1.3.4.1 Ceiling Sprinkler Density vs. Storage Height.

16.2.1.3.4.2 For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected withceiling sprinklers and minimum required in-rack sprinklers, densities obtained from design curvesshall be used. Densities shall not be adjusted in accordance with Figure 16.2.1.3.4.1.

16.2.1.3.4.3 For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected withceiling sprinklers and with more than one level of in-rack sprinklers, but not in every tier, densitiesobtained from design curves and adjusted in accordance with Figure 16.2.1.3.4.1 shall be permittedto be reduced an additional 20 percent, as indicated in Table 16.2.1.3.4.3.

Table 16.2.1.3.4.3 Adjustment to Ceiling Sprinkler Density for Storage Height and In-Rack Sprinklers

StorageHeight

In-RackSprinklers

Apply Figure16.2.1.3.4.1 forStorage Height

Adjustment

Permitted Ceiling SprinklersDensity Adjustments Where

In-Rack Sprinklers AreInstalled


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StorageHeight

In-RackSprinklers


Adjustment


In-Rack Sprinklers AreInstalled

Over 12 ft (3.7m) through 25 ft(7.6 m)

None Yes None


Minimum required Yes None

More thanminimum, but notin every tier

YesReduce density 20% from that ofminimum in-rack sprinklers

In every tier YesReduce density 40% from that ofminimum in-rack sprinklers


Minimum required No None

More thanminimum, but notin every tier

NoReduce density 20% from that ofminimum in-rack sprinklers

In every tier NoReduce density 40% from that ofminimum in-rack sprinklers

16.2.1.3.4.4 For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected withceiling sprinklers and with more than the minimum required level of in-rack sprinklers, but not inevery tier, densities obtained from design curves shall be permitted to be reduced 20 percent, asindicated in Table 16.2.1.3.4.3. Densities shall not be adjusted in accordance with Figure16.2.1.3.4.1 for storage height.

16.2.1.3.4.5* For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected withceiling sprinklers and in-rack sprinklers at each tier, densities obtained from design curves andadjusted in accordance with Figure 16.2.1.3.4.1 shall be permitted to be reduced an additional 40percent, as indicated in Table 16.2.1.3.4.3.

16.2.1.3.4.6* For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected withceiling sprinklers and in-rack sprinklers at each tier, densities obtained from design curves shall bepermitted to be reduced 40 percent, as indicated in Table 16.2.1.3.4.3. Densities shall not beadjusted in accordance with Figure 16.2.1.3.4.1 for storage height.

16.2.1.3.4.7 Where solid, flat-bottom, combustible pallets (slave pallets) are used with storageheight up to and including 25 ft (7.6 m), the densities that are indicated in the design curves shownin Figure

16.2.1.3.2(a) through Figure 16.2.1.3.2(g), based on conventional pallets, shall be increased 20percent for the given area.

(A) The percentage shall be applied to the density determined in accordance with 16.2.1.3.4.

(B) The increase in density shall not apply where in-rack sprinklers are utilized in the design.

16.2.1.3.5 Solid For solid shelf rack storage , Table 16.2.1.3.2 shall be used toestablish the density/area criteria and in-rack sprinklers shall be installed inaccordance with 16.1.6. In-rack sprinkler rules consolidated in 16.1.8- check tosee if this has been deleted.

16.2.1.4 In-Rack Sprinklers for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected withControl Mode Density/Area Sprinklers at Ceiling.

16.2.1.4.1 In-Rack Sprinkler Location for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height .

16.2.1.4.1.1 In single- or double-row racks, in-rack sprinklers shall be installed in accordance withTable 16.2.1.3.2.

16.2.1.4.1.2 In multiple-row racks no deeper than 16 ft (4.9 m) with aisles 8 ft (2.4 m) or more in


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width, in-rack sprinklers shall be installed in accordance with Table 16.2.1.3.3.1.

16.2.1.4.1.3 In multiple-row racks deeper than 16 ft (4.9 m) or with aisles less than 8 ft (2.4 m) wide,in-rack sprinklers shall be installed in accordance with Table 16.2.1.3.3.2.

16.2.1.4.1.4 In-rack sprinklers at one level only for storage up to and including 25 ft (7.6 m) highshall be located at the first tier level at or above one-half of the storage height.

16.2.1.4.1.5 In-rack sprinklers at two levels only for storage up to and including 25 ft (7.6 m) highshall be located at the first tier level at or above one-third and two-thirds of the storage height.

16.2.1.4.2 In-Rack Sprinkler Spacing for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected byControl Mode Density/Area Sprinklers at the Ceiling.

16.2.1.4.2.1* Maximum horizontal spacing of in-rack sprinklers in single- or double-row racks up toand including 25 ft (7.6 m) in height shall be in accordance with Table 16.2.1.4.2.1.

Table 16.2.1.4.2.1 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Single-or Double-Row Racks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/AreaSprinklers at the Ceiling

Commodity Class

Aisle Widths I and II III IV

Encapsulated ft m ft m ft m ft m

No 8 2.4 12 3.7 12 3.7 10 3.0

No 4 1.2 12 3.7 10 3.0 10 3.0

Yes — — 8 2.4 8 2.4 8 2.4

16.2.1.4.2.2* Maximum horizontal spacing and maximum area of coverage of in-rack sprinklers onbranch lines, in multiple-row racks with storage up to and including 25 ft (7.6 m) in height, shall be inaccordance with Table 16.2.1.4.2.2.

Table 16.2.1.4.2.2 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored inMulti-Row Racks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers atthe Ceiling

Commodity Class

I, II, III IV

Spacing Area Spacing Area

ft m ft2 m2 ft m ft2 m2

12 3.7 100 9.3 8 2.4 80 7.4

(A) The rack plan view shall be considered in determining the area covered by each sprinkler.

(B) The aisles shall not be included in area calculations.

16.2.1.4.2.3* The elevation of in-rack sprinkler deflectors with respect to storage shall not be aconsideration in single- or double-row rack storage up to and including 20 ft (6.1 m) high. (SeeSection C.16.)

16.2.1.4.2.4* In single- or double-row racks without solid shelves with storage over 20 ft (6.1 m)high, or in multiple-row racks, or in single- or double-row racks with solid shelves and storage heightup to and including 25 ft (7.6 m), a minimum of 6 in. (152 mm) vertical clear space shall bemaintained between the in-rack sprinkler deflectors and the top of a tier of storage.

(A) Sprinkler discharge shall not be obstructed by horizontal rack members.

16.2.1.4.2.5 For multiple-row racks, a minimum of 6 in. (152 mm) shall be maintained between thein-rack sprinkler deflector and the top of a tier of storage.

16.2.1.4.2.6 Sprinklers installed in racks shall be spaced without regard to rack uprights. (SeeSection C.17.)


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16.2.1.4.3 In-Rack Sprinkler Water Demand for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected by Control ModeDensity/Area Sprinklers in the Ceiling. See Section C.18.

16.2.1.4.3.1 The water demand for sprinklers installed in racks shall be based on simultaneousoperation of the most hydraulically remote sprinklers as follows:

(1) Six sprinklers where only one level is installed in racks with Class I, Class II, or Class III commodities

(2) Eight sprinklers where only one level is installed in racks with Class IV commodities

(3) Ten sprinklers (five on each two top levels) where more than one level is installed in racks with Class I,Class II, or Class III commodities

(4) Fourteen sprinklers (seven on each two top levels) where more than one level is installed in racks withClass IV commodities

16.2.1.4.3.2 Where a storage rack, due to its length, requires less than the number of in-racksprinklers specified in 16.2.1.4.3.1 (1) through 16.2.1.4.3.1 (4), only those in-rack sprinklers in asingle rack shall be included in the calculation.

16.2.1.4.4 In-Rack Sprinkler Discharge Pressure for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected by Control ModeDensity/Area Sprinklers at the Ceiling. Sprinklers in racks shall discharge at not less than 15 psi (1bar) for all classes of commodities. (See Section C.19.)

16.2.2 CMSA Sprinklers Protection Criteria for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.2.1 Protection of single-, double-, and multiple-row rack storage for Class I through Class IVcommodities shall be in accordance with Table 16.2.2.1.

Table 16.2.2.1 CMSA Sprinkler Design Criteria for Rack Storage of Class I Through Class IVCommodities (Encapsulated and Nonencapsulated) Stored Up to and Including 25 ft (7.6 m) inHeight

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Typeof

System


MinimumOperatinPressur

ft m ft m psi ba

Single-,double-, andmultiple-rowracks (noopen-topcontainers)

Class I or II

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.

Dry 25 25 1.

16.8 (240)Upright

Wet 15 10 0.

Dry 25 15 1.

19.6 (280)Pendent

Wet 15 16 1.

25 7.6 30 9.1

11.2 (160)Upright

Wet 20 25 1.

Dry 30 25 1.

16.8 (240)Upright

Wet 15 10 0.

Dry 30 15 1.

19.6 (280)Pendent

Wet 15 16 1.

Class III20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.

Dry 25 25 1.


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

OrientationType ofSystem


MinimuOperatinPressur

ft m ft m psi ba

16.8 (240)Upright

Wet 15 15 1.

Dry 25 15 1.

19.6 (280)Pendent

Wet 15 16 1.

25 7.6

30 9.1

11.2 (160)Upright

Wet15 1 level of

in-rack25 1.

Dry25 1 level of

in-rack25 1.

16.8 (240)Upright

Wet 15 22 1.

Dry25 1 level of

in-rack15 1.

19.6 (280)Pendent

Wet 15 16 1.

35 10.6

11.2 (160)Upright

Wet15 1 level of

in-rack25 1.

Dry25 1 level of

in-rack25 1.

16.8 (240)Upright

Wet15 1 level of

in-rack15 1.

Dry25 1 level of

in-rack15 1.

19.6 (280)Pendent

Wet 15 25 1.

40 12.119.6 (280)Pendent

Wet 15 30 2.

Class IV

20 6.1

25 7.6

11.2 (160)Upright

Wet 15 50 3.

16.8 (240)Upright

Wet 15 22 1.

19.6 (280)Pendent

Wet 15 16 1.

30 9.1

11.2 (160)Upright

Wet20 50 3.

15 75 5.2

16.8 (240)Upright

Wet 15 22 1.

19.6 (280)Pendent

Wet 15 16 1.


31 of 947 7/1/2016 7:11 AM

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StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/



MinimuOperatinPressur

ft m ft m psi ba

25 7.6

30 9.1

11.2 (160)Upright

Wet15 1 level of

in-rack50 3.

16.8 (240)Upright

Wet 15 22 1.

19.6 (280)Pendent

Wet 15 16 1.

35 10.6

11.2 (160)Upright

Wet

20 1 level ofin-rack

50 3.


75 5.2

16.8 (240)Upright

Wet


22 1.


35 2.4

19.6 (280)Pendent

Wet 15 25 1.

40 12.119.6 (280)Pendent

Wet 15 30 2.

16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installedin every level below the highest solid shelf.

16.2.2.2 Where in-rack sprinklers are required by Table 16.2.2.1, in In -rack sprinkler spacing,design pressure, and hydraulic calculation criteria shall be in accordance with the requirements of16.2.2.7 as applicable for the commodity .

16.2.2.3 Protection shall be provided as specified in Table 16.2.2.1 or appropriate NFPA standardsin terms of minimum operating pressure and the number of sprinklers to be included in the designarea.

16.2.2.4 Open Wood Joist Construction.

16.2.2.4.1 Where CMSA sprinklers are installed under open wood joist construction, their minimumoperating pressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for aK-16.8 (240) sprinkler.

16.2.2.4.2 Where each joist channel of open wood joist construction is fully firestopped to its fulldepth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 16.2.2.1 shallbe permitted to be used.

16.2.2.5 Preaction Systems.

For the purpose of using Table 16.2.2.1, preaction systems shall be classified as dry pipe systems.

16.2.2.6 Building steel shall not require special protection where Table 16.2.2.1 is applied asappropriate for the storage configuration.

16.2.2.7 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Upto and Including 25 ft (7.6 m) in Height Protected with Control Mode Specific Application Sprinklersat the Ceiling.

16.2.2.7.1 Where in-rack sprinklers are required by Table 16.2.2.1, in In -rack sprinklers shall beinstalled at the first tier level at or above one-half of the storage height.

16.2.2.7.2 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the


32 of 947 7/1/2016 7:11 AM

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sprinkler deflectors and the top of a tier of storage.


16.2.2.7.4 The maximum horizontal distance between in-rack sprinklers shall be 8 ft (1.5 m).


16.2.2.7.6 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspacing rules.

16.2.2.7.7 In-Rack Sprinkler Water Demand.

The water demand for in-rack sprinklers shall be based on simultaneous operation of the mosthydraulically remote eight sprinklers.

16.2.2.7.8 In-Rack Sprinkler Discharge Pressure.

In-rack sprinklers shall discharge at not less than 15 psi (1 bar) for all classes of commodities. (SeeSection C.19.)

16.2.3* Early Suppression Fast-Response (ESFR) Protection Criteria Sprinklers for Rack Storageof Class I Through Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height .

16.2.3.1 Protection of single-, double-, and multiple-row rack storage of Class I through Class IVcommodities shall be in accordance with Table 16.2.3.1.

Table 16.2.3.1 ESFR Sprinkler Protection of Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height



MaximumCeiling/Roof



IS

Reqft m ft m psi bar

Single-row,double-row, andmultiple-rowracks (noopen-topcontainers)

Class I, II, III, orIV, encapsulated

ornonencapsultated

20 6.1

25 7.6

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)pendent 25 1.7

25.2

(360)Pendent 15 1.0

30 9.1

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)Pendent 25 1.7

25.2

(360)Pendent 15 1.0


33 of 947 7/1/2016 7:11 AM

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MaximumCeiling/Roof



IS


35 10.7

14.0

(200)

Upright/

pendent75 5.2

16.8

(240)

Upright/

pendent52 3.6

22.4

(320)Pendent 35 2.4

25.2

(360)Pendent 20 1.4

4012.2 or

12.1

16.8

(240)Pendent 52 3.6

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 25 1.7

45 13.7

14.0

(200)Pendent 90 6.2

16.8

(240)Pendent 63 4.4

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 40 2.8

25 7.6

30 9.1

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)Pendent 25 1.7

25.2

(360)Pendent 15 1.0

32 9.8

14.0

(200)

Upright/

pendent60 4.1

16.8

(240)

Upright/

pendent42 2.9


34 of 947 7/1/2016 7:11 AM

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MaximumCeiling/Roof



IS


35 10.7

14.0

(200)

Upright/

pendent75 5.2

16.8

(240)

Upright/

pendent52 3.6

22.4

(320)Pendent 35 2.4

25.2

(360)Pendent 20 1.4

4012.2 or

12.1

16.8

(240)Pendent 52 3.6

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 25 1.7

45 13.7

14.0

(200)Pendent 90 6.2

16.8

(240)Pendent 63 4.4

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 40 2.8

16.2.3.2 ESFR s Sprinklers shall not be permitted to protect storage on solid shelf racks unless thesolid shelf racks are protected with in-rack sprinklers in accordance with 16.1.6.

16.2.3.2.1 Where solid shelves are used, in-rack sprinklers shall be installed in every level belowthe highest solid shelf.

16.2.3.3 ESFR sSprinklers shall not be permitted to protect storage with open top containers.

16.2.3.4 ESFR sSprinkler systems shall be designed such that the minimum operating pressure isnot less than that indicated in Table 16.2.3.1 for type of storage, commodity, storage height, andbuilding height involved.

16.2.3.5 The design area shall consist of the most hydraulically demanding area of 12 sprinklers,consisting of four sprinklers on each of three branch lines.

16.2.3.6 In-Rack Sprinkler Requirements for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Where ESFR Sprinklers Are BeingUsed at the Ceiling .

16.2.3.6.1 Where required by Table 16.2.3.1, in-rack sprinklers shall be installed at the first tier levelat or above one-half of the storage height.

16.2.3.6.2 In-rack sprinklers shall be K-8.0 (115) or K-11.2 (160) quick-response, ordinary-temperature sprinklers.


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16.2.3.6.7 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspacing rules.

16.2.3.6.8 The water demand for sprinklers installed in racks shall be based on simultaneousoperation of the most hydraulically remote eight sprinklers.

16.2.3.6.9 Each of the in-rack sprinklers described in 16.2.3.6.8 shall discharge at a minimum of 60gpm (227 L/min).

16.2.4 Special Design for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height .

16.2.4.1 Slatted Shelves.

16.2.4.1.1* Slatted rack shelves shall be considered equivalent to solid rack shelves where theshelving is not considered open rack shelving or where the requirements of 16.2.4.1.2 are not met.(See Section C.20.)

16.2.4.1.2 A wet pipe system that is designed to provide a minimum of 0.6 gpm/ft2 (24.5 mm/min)

density over a minimum area of 2000 ft2 (186 m2) or K-14.0 (200) ESFR sprinklers operating at aminimum of 50 psi (3.4 bar), K-16.8 (240) sprinklers operating at a minimum of 32 psi (2.2 bar),K-22.4 (320) ESFR sprinklers operating at a minimum of 25 psi (1.7 bar), or K-25.2 (360) ESFRsprinklers operating at a minimum of 15 psi (1 bar) shall be permitted to protect single-row anddouble-row racks with slatted rack shelving where all of the following conditions are met:

(1) Sprinklers shall be K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice spray sprinklers with atemperature rating of ordinary, intermediate, or high and shall be listed for storage occupancies or shallbe K-14.0 (200), K-16.8 (240), K-22.4 (320) ESFR, or K-25.2 (360) ESFR.

(2) The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and unexpanded) Group A plastics, and exposed (unexpanded) Group Aplastics.

(3) Slats in slatted rack shelving shall be a minimum nominal 2 in. (51 mm) thick by maximum nominal 6in. (152 mm) wide, with the slats held in place by spacers that maintain a minimum 2 in. (51 mm)opening between each slat.

(4) Where K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice sprinklers are used, there shall be no slattedshelf levels in the rack above 12 ft (3.7 m). Open rack shelving using wire mesh shall be permitted forshelf levels above 12 ft (3.7 m).

(5) Transverse flue spaces at least 3 in. (76 mm) wide shall be provided at least every 10 ft (3.1 m)horizontally.

(6) Longitudinal flue spaces at least 6 in. (152 mm) wide shall be provided for double-row racks.Longitudinal flue spaces shall not be required where ESFR sprinklers are used.

(7) The aisle widths shall be at least 7 1⁄2 ft (2.3 m).

(8) The maximum roof height shall be 27 ft (8.2 m) or 30 ft (9.1 m) where ESFR sprinklers are used.

(9) The maximum storage height shall be 20 ft (6.1 m).

(10) Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2 in.(51 mm) spaces between slats, nor shall they be placed on wire mesh shelves.




36 of 947 7/1/2016 7:11 AM

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PC_342.pdf 13-PC_342



Submitted on behalf of the SSD Redundancy Task Group. Proposed text eliminates duplicate/redundant text and is considered editorial.



Organization: NFPA


Street Address:

City:

State:

Zip:



37 of 947 7/1/2016 7:11 AM

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Make the following changes to Section 16.2 to eliminate redundancy and duplicate text.

16.2 Protection Criteria for Open Rack Storage of Class I Through Class IV Commodities StoredUp to and Including 25 ft (7.6 m) in Height.

16.2.1 Control Mode Density/Area Sprinkler Protection Criteria for Rack Storage of Class IThrough Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.1.1

The area and density for the hydraulically remote area and the water supply shall be determined as specified in16.2.1.2 for storage up to 12 ft (3.7 m) and 16.2.1.3 to 16.2.1.3.5 for storage over 12 ft (3.7 m).

16.2.1.2 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Storage Up to12 ft (3.7 m) in Height.

16.2.1.2.1 The protection criteria for storage up to and including 12 ft (3.7 m) shall be the same asmiscellaneous storage from Chapter 13.

16.2.1.2.2 The protection criteria in Chapter 13 shall be acceptable for storage of Class I through Class IVcommodities up to and including 12 ft (3.7 m) in height. (See Table 13.2.1 for specific Class I through Class IVstorage height protection criteria.)

16.2.1.2.3 For storage 12 ft (3.7 m) or less in height that does not meet the definition of Miscellaneous Storagethat is on solid shelf racks, in-rack sprinklers shall be provided in accordance with 16.1.6, and ceiling sprinklerprotection shall be provided in accordance with Chapter 13.

16.2.1.3 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Storage Over12 ft (3.7 m) in Height.

16.2.1.3.1*

Ceiling sprinkler water demand shall be determined in accordance with 16.2.1.3.2 for single- and double-rowracks or 16.2.1.3.3 for multiple-row racks. (See Section C.14.)

16.2.1.3.2*

For single- or double-row racks for Class I, Class II, Class III, or Class IV commodities, encapsulated or

nonencapsulated in single- or double-row racks , ceiling sprinkler water demand in terms of density [gpm/ft2

(mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling or roof] shall be selected from the density/areacurves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(g) that are appropriate for each commodity andconfiguration as shown in Table 16.2.1.3.2 and shall be modified as appropriate by 16.2.1.3.4 . Theserequirements shall apply to portable racks arranged in the same manner as single- or double-row racks.

Table 16.2.1.3.2 Single- or Double-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft(7.6 m)


SprinklersMandatory

In-Rack

Ceiling Sprinkler Water

Aisles* With In-Rack Sprinklers With


16.2.1.3.4.1Figu


INo

4 1.2No 16.2.1.3.2(a)

C and D

Yes16.2.1.3

8 2.4 A and B

Yes 4 1.2 No 16.2.1.3.2(e) C and D 16.2.1.3


1 of 17 5/13/2016 3:14 PM

Page 62 of 1114


SprinklersMandatory

In-Rack




16.2.1.3.4.1Figu

20 ft (6.1m)

8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.38 2.4 A and B

Yes4 1.2

No 16.2.1.3.2(e)C and D

16.2.1.38 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

—8 2.4 A and B

IV

No4 1.2

No 16.2.1.3.2(d)C and D

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(g)C and D

—8 2.4 A and B


I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

—8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

—8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

—8 2.4 A and B

IV

No4 1.2

No 16.2.1.3.2(d)C and D

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(g)C and D

—8 2.4 A and B


2 of 17 5/13/2016 3:14 PM

Page 63 of 1114


SprinklersMandatory

In-Rack




16.2.1.3.4.1Figu


I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

—8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

—8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.38 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

—8 2.4 A and B

IV

No4 1.2

1 level

16.2.1.3.2(d)C and D

—8 2.4 A and B

Yes4 1.2

16.2.1.3.2(g)C and D

—8 2.4 A and B

*See 16.2.1.3.2.1 for interpolation of aisle widths.

Figure 16.2.1.3.2(a) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class INonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(b) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(c) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IIINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(d) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IVNonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(e) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class I and Class II Encapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(f) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class III Encapsulated Commodities — Conventional Pallets.


3 of 17 5/13/2016 3:14 PM

Page 64 of 1114

Figure 16.2.1.3.2(g) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class IV Encapsulated Commodities — Conventional Pallets.

16.2.1.3.2.1*

Design densities for single- and double-row racks shall be selected to correspond to aisle width. (See SectionC.15.)

(A) For aisle widths between 4 ft (1.2 m) and 8 ft (2.4 m), the rules for 4 ft (1.2 m) aisle width shall be used ordirect linear interpolation between the densities shall be permitted.

(B) The density given for 8 ft (2.4 m) wide aisles shall be applied to aisles wider than 8 ft (2.4 m).

(C) The density given for 4 ft (1.2 m) wide aisles shall be applied to aisles more narrow than 4 ft (1.2 m) downto 3 ¹⁄2 ft (1.07 m).

(D) Where aisles are more narrow than 3 ¹⁄2 ft (1.07 m), racks shall be considered to be multiple-row racks.

16.2.1.3.3 Multiple-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m).

16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m) with Aisles 8 ft (2.4 m)or Wider.

For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, c C eiling sprinkler

water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling or roof]shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(d) that areappropriate for each commodity and configuration as shown in Table 16.2.1.3.3.1 and shall be modified asappropriate by 16.2.1.3.4 . These requirements protection criteria shall apply to portable racks arranged in thesame manner as multiple-row racks.

Table 16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m), Aisles 8 ft (2.4 m) orWider and Storage Height Over 12 ft (3.7 m) Up to 25 ft (7.6 m)


Encap-

sulated

SprinklersMandatory

In-Rack

Ceiling Sprinkler Water Dema

With In-Rack Sprinklers Witho


16.2.1.3.4.1

1.25 ×Density Figure C


INo

No

16.2.1.3.2(a)

C and D

Yes

No 16.2.1.3.2(a) I

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a) I

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b) I

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b) I

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c) I

Yes 1 level 16.2.1.3.2(c) Yes N

IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d) C

Yes 1 level 16.2.1.3.2(d) A and B1.50 ×density

N


INo

No

16.2.1.3.2(a)

C and D Yes

No 16.2.1.3.2(a) I

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a) I

II No 16.2.1.3.2(b) No 16.2.1.3.2(b) I


4 of 17 5/13/2016 3:14 PM

Page 65 of 1114


Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


20 ft (6.1m)

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b) I

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c) I


NA NIV

No

1 level

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A nd B1.50 ×density


INo No 16.2.1.3.2(a)

C and D

No

No 16.2.1.3.2(a) I

Yes 1 level 16.2.1.3.2(a) Yes

NA N

IINo

1 level

16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A and B1.50 ×density

NA: Not applicable.

16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles More Narrow Than 8 ft (2.4m).

For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, C c eiling sprinkler

water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling or roof]shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(g) that areappropriate for each commodity and configuration as shown in Table 16.2.1.3.3.2 and shall be modified asappropriate by 16.2.1.3.4. These requirements protection criteria shall apply to portable racks arranged in thesame manner as multiple-row racks. (Move to 16.1 and delete from individual sections)

Table 16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles Narrower Than 8 ft (2.4 m),Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m)


Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1



INo

No

16.2.1.3.2(a)

C and D Yes

No 16.2.1.3.2(a)

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a)

II No 16.2.1.3.2(b) No 16.2.1.3.2(b)


5 of 17 5/13/2016 3:14 PM

Page 66 of 1114


Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


15 ft (4.6m)

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b)

IIINo 16.2.1.3.2(c) No 16.2.1.3.2(c)


IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d) C

Yes 1 level 16.2.1.3.2(d)1.50 ×density


INo

1 level

16.2.1.3.2(a)

C and D Yes

No

NA

Yes 16.2.1.3.2(a) Yes

IINo 16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No 16.2.1.3.2(d) No

Yes 16.2.1.3.2(d)1.50 ×density


INo

1 level

16.2.1.3.2(a)

C and D No

No

NA

Yes 16.2.1.3.2(a) Yes

IINo 16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d)1.50 ×density

NA: Not applicable.

16.2.1.3.3.3 Where Class I, Class II, and Class III commodities are encapsulated, ceiling sprinkler density shallbe 25 percent greater than for nonencapsulated.

16.2.1.3.3.4 Where Class IV commodities are encapsulated, ceiling sprinkler density shall be 50 percentgreater than for nonencapsulated.

16.2.1.3.4 Ceiling Sprinkler Density Adjustments.

16.2.1.3.4.1 For storage height over 12 ft (3.7 m) up to and including 25 ft (7.6 m) protected with ceilingsprinklers only and for storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected with ceilingsprinklers and minimum required in-rack sprinklers, densities obtained from design curves shall be adjusted inaccordance with Figure 16.2.1.3.4.1.

Figure 16.2.1.3.4.1 Ceiling Sprinkler Density vs. Storage Height.


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16.2.1.3.4.2 For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceilingsprinklers and minimum required in-rack sprinklers, densities obtained from design curves shall be used.Densities shall not be adjusted in accordance with Figure 16.2.1.3.4.1.

16.2.1.3.4.3 For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected with ceilingsprinklers and with more than one level of in-rack sprinklers, but not in every tier, densities obtained from designcurves and adjusted in accordance with Figure 16.2.1.3.4.1 shall be permitted to be reduced an additional 20percent, as indicated in Table 16.2.1.3.4.3.

Table 16.2.1.3.4.3 Adjustment to Ceiling Sprinkler Density for Storage Height and In-Rack Sprinklers

StorageHeight

In-RackSprinklers


Adjustment


In-Rack Sprinklers Are Installed


None Yes None


Minimum required Yes None

More thanminimum, but not inevery tier

YesReduce density 20% from that ofminimum in-rack sprinklers

In every tier YesReduce density 40% from that ofminimum in-rack sprinklers


Minimum required No None

More thanminimum, but not inevery tier

NoReduce density 20% from that ofminimum in-rack sprinklers

In every tier NoReduce density 40% from that ofminimum in-rack sprinklers

16.2.1.3.4.4 For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceilingsprinklers and with more than the minimum required level of in-rack sprinklers, but not in every tier, densitiesobtained from design curves shall be permitted to be reduced 20 percent, as indicated in Table 16.2.1.3.4.3.Densities shall not be adjusted in accordance with Figure 16.2.1.3.4.1 for storage height.

16.2.1.3.4.5* For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected with ceilingsprinklers and in-rack sprinklers at each tier, densities obtained from design curves and adjusted in accordancewith Figure 16.2.1.3.4.1 shall be permitted to be reduced an additional 40 percent, as indicated in Table16.2.1.3.4.3.

16.2.1.3.4.6* For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceilingsprinklers and in-rack sprinklers at each tier, densities obtained from design curves shall be permitted to bereduced 40 percent, as indicated in Table 16.2.1.3.4.3. Densities shall not be adjusted in accordance withFigure 16.2.1.3.4.1 for storage height.

16.2.1.3.4.7 Where solid, flat-bottom, combustible pallets (slave pallets) are used with storage height up to andincluding 25 ft (7.6 m), the densities that are indicated in the design curves shown in Figure

16.2.1.3.2(a) through Figure 16.2.1.3.2(g), based on conventional pallets, shall be increased 20 percent for thegiven area.

(A) The percentage shall be applied to the density determined in accordance with 16.2.1.3.4.

(B) The increase in density shall not apply where in-rack sprinklers are utilized in the design.

16.2.1.3.5 Solid For solid shelf rack storage , Table 16.2.1.3.2 shall be used to establish thedensity/area criteria and in-rack sprinklers shall be installed in accordance with 16.1.6. In-rack


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sprinkler rules consolidated in 16.1.8- check to see if this has been deleted.

16.2.1.4 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities StoredUp to and Including 25 ft (7.6 m) in Height Protected with Control Mode Density/AreaSprinklers at Ceiling.

16.2.1.4.1 In-Rack Sprinkler Location for Rack Storage of Class I Through Class IV Commodities Stored Up toand Including 25 ft (7.6 m) in Height .

16.2.1.4.1.1 In single- or double-row racks, in-rack sprinklers shall be installed in accordance with Table16.2.1.3.2.

16.2.1.4.1.2 In multiple-row racks no deeper than 16 ft (4.9 m) with aisles 8 ft (2.4 m) or more in width, in-racksprinklers shall be installed in accordance with Table 16.2.1.3.3.1.

16.2.1.4.1.3 In multiple-row racks deeper than 16 ft (4.9 m) or with aisles less than 8 ft (2.4 m) wide, in-racksprinklers shall be installed in accordance with Table 16.2.1.3.3.2.

16.2.1.4.1.4 In-rack sprinklers at one level only for storage up to and including 25 ft (7.6 m) high shall belocated at the first tier level at or above one-half of the storage height.

16.2.1.4.1.5 In-rack sprinklers at two levels only for storage up to and including 25 ft (7.6 m) high shall belocated at the first tier level at or above one-third and two-thirds of the storage height.

16.2.1.4.2 In-Rack Sprinkler Spacing for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected by ControlMode Density/Area Sprinklers at the Ceiling.

16.2.1.4.2.1* Maximum horizontal spacing of in-rack sprinklers in single- or double-row racks up to andincluding 25 ft (7.6 m) in height shall be in accordance with Table 16.2.1.4.2.1.

Table 16.2.1.4.2.1 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Single- orDouble-Row Racks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers at theCeiling

Commodity Class

Aisle Widths I and II III IV

Encapsulated ft m ft m ft m ft m

No 8 2.4 12 3.7 12 3.7 10 3.0

No 4 1.2 12 3.7 10 3.0 10 3.0

Yes — — 8 2.4 8 2.4 8 2.4

16.2.1.4.2.2* Maximum horizontal spacing and maximum area of coverage of in-rack sprinklers on branchlines, in multiple-row racks with storage up to and including 25 ft (7.6 m) in height, shall be in accordance withTable 16.2.1.4.2.2.

Table 16.2.1.4.2.2 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Multi-Row RacksUp to 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers at the Ceiling

Commodity Class

I, II, III IV

Spacing Area Spacing Area

ft m ft2 m2 ft m ft2 m2

12 3.7 100 9.3 8 2.4 80 7.4

(A) The rack plan view shall be considered in determining the area covered by each sprinkler.

(B) The aisles shall not be included in area calculations.


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16.2.1.4.2.3* The elevation of in-rack sprinkler deflectors with respect to storage shall not be a consideration insingle- or double-row rack storage up to and including 20 ft (6.1 m) high. (See Section C.16.)

16.2.1.4.2.4* In single- or double-row racks without solid shelves with storage over 20 ft (6.1 m) high, or inmultiple-row racks, or in single- or double-row racks with solid shelves and storage height up to and including25 ft (7.6 m), a minimum of 6 in. (152 mm) vertical clear space shall be maintained between the in-racksprinkler deflectors and the top of a tier of storage.

(A) Sprinkler discharge shall not be obstructed by horizontal rack members.

16.2.1.4.2.5 For multiple-row racks, a minimum of 6 in. (152 mm) shall be maintained between the in-racksprinkler deflector and the top of a tier of storage.

16.2.1.4.2.6 Sprinklers installed in racks shall be spaced without regard to rack uprights. (See Section C.17.)

16.2.1.4.3 In-Rack Sprinkler Water Demand for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers in theCeiling. See Section C.18.

16.2.1.4.3.1 The water demand for sprinklers installed in racks shall be based on simultaneous operation of themost hydraulically remote sprinklers as follows:

Six sprinklers where only one level is installed in racks with Class I, Class II, or Class III commodities1.

Eight sprinklers where only one level is installed in racks with Class IV commodities2.

Ten sprinklers (five on each two top levels) where more than one level is installed in racks with Class I,Class II, or Class III commodities

3.

Fourteen sprinklers (seven on each two top levels) where more than one level is installed in racks withClass IV commodities

4.

16.2.1.4.3.2 Where a storage rack, due to its length, requires less than the number of in-rack sprinklersspecified in 16.2.1.4.3.1 (1) through 16.2.1.4.3.1 (4), only those in-rack sprinklers in a single rack shall beincluded in the calculation.

16.2.1.4.4 In-Rack Sprinkler Discharge Pressure for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers at theCeiling. Sprinklers in racks shall discharge at not less than 15 psi (1 bar) for all classes of commodities. (SeeSection C.19.)

16.2.2 CMSA Sprinklers Protection Criteria for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.2.1 Protection of single-, double-, and multiple-row rack storage for Class I through Class IV commoditiesshall be in accordance with Table 16.2.2.1.

Table 16.2.2.1 CMSA Sprinkler Design Criteria for Rack Storage of Class I Through Class IV Commodities(Encapsulated and Nonencapsulated) Stored Up to and Including 25 ft (7.6 m) in Height

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/




ft m ft m psi bar


Class I or II 20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/




ft m ft m psi bar

25 7.6 30 9.1

11.2 (160)Upright

Wet 20 25 1.7

Dry 30 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 30 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

Class III

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6

30 9.1

11.2 (160)Upright

Wet15 1 level of

in-rack25 1.7

Dry25 1 level of

in-rack25 1.7

16.8 (240)Upright

Wet 15 22 1.5

Dry25 1 level of

in-rack15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

35 10.6

11.2 (160)Upright

Wet15 1 level of

in-rack25 1.7

Dry25 1 level of

in-rack25 1.7

16.8 (240)Upright

Wet15 1 level of

in-rack15 1.0

Dry25 1 level of

in-rack15 1.0

19.6 (280)Pendent

Wet 15 25 1.7

40 12.119.6 (280)Pendent

Wet 15 30 2.1

Class IV

20 6.1 25 7.6

11.2 (160)Upright

Wet 15 50 3.5

16.8 (240)Upright

Wet 15 22 1.5


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/




ft m ft m psi bar

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1

11.2 (160)Upright

Wet20 50 3.5

15 75 5.2

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6

30 9.1

11.2 (160)Upright

Wet15 1 level of

in-rack50 3.5

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

35 10.6

11.2 (160)Upright

Wet


50 3.5


75 5.2

16.8 (240)Upright

Wet


22 1.5


35 2.4

19.6 (280)Pendent

Wet 15 25 1.7

40 12.119.6 (280)Pendent

Wet 15 30 2.1

16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level below thehighest solid shelf.

16.2.2.2 Where in-rack sprinklers are required by Table 16.2.2.1, in In -rack sprinkler spacing, designpressure, and hydraulic calculation criteria shall be in accordance with the requirements of 16.2.2.7 asapplicable for the commodity .

16.2.2.3 Protection shall be provided as specified in Table 16.2.2.1 or appropriate NFPA standards in terms ofminimum operating pressure and the number of sprinklers to be included in the design area.


16.2.2.4.1 Where CMSA sprinklers are installed under open wood joist construction, their minimum operatingpressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8 (240) sprinkler.

16.2.2.4.2 Where each joist channel of open wood joist construction is fully firestopped to its full depth atintervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 16.2.2.1 shall be permitted to beused.


For the purpose of using Table 16.2.2.1, preaction systems shall be classified as dry pipe systems.


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16.2.2.6 Building steel shall not require special protection where Table 16.2.2.1 is applied as appropriate forthe storage configuration.

16.2.2.7 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height Protected with Control Mode Specific Application Sprinklers at the Ceiling.

16.2.2.7.1 Where in-rack sprinklers are required by Table 16.2.2.1, in In -rack sprinklers shall be installed at thefirst tier level at or above one-half of the storage height.

16.2.2.7.2 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the sprinklerdeflectors and the top of a tier of storage.



16.2.2.7.5 Where distances between transverse flues exceed the maximum allowable distances, sprinklersshall be installed at the intersection of the transverse and longitudinal flues, and additional sprinklers shall beinstalled between transverse flues to meet the maximum distance rules.

16.2.2.7.6 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacing rules.


The water demand for in-rack sprinklers shall be based on simultaneous operation of the most hydraulicallyremote eight sprinklers.


In-rack sprinklers shall discharge at not less than 15 psi (1 bar) for all classes of commodities. (See SectionC.19.)

16.2.3* Early Suppression Fast-Response (ESFR) Protection Criteria Sprinklers for Rack Storage of Class IThrough Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height .

16.2.3.1 Protection of single-, double-, and multiple-row rack storage of Class I through Class IV commoditiesshall be in accordance with Table 16.2.3.1.

Table 16.2.3.1 ESFR Sprinkler Protection of Rack Storage of Class I Through Class IV Commodities Stored Upto and Including 25 ft (7.6 m) in Height



MaximumCeiling/Roof



In-RSprin

Requireft m ft m psi bar

Single-row,double-row, andmultiple-rowracks (noopen-topcontainers)

Class I, II, III, orIV, encapsulated

ornonencapsultated

20 6.1

25 7.6

14.0

(200)

Upright/

pendent50 3.4 N

16.8

(240)

Upright/

pendent35 2.4 N

22.4

(320)pendent 25 1.7 N

25.2

(360)Pendent 15 1.0 N

30 9.114.0

(200)

Upright/

pendent50 3.4 N


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MaximumCeiling/Roof



In-RSprin


16.8

(240)

Upright/

pendent35 2.4 N

22.4

(320)Pendent 25 1.7 N

25.2

(360)Pendent 15 1.0 N

35 10.7

14.0

(200)

Upright/

pendent75 5.2 N

16.8

(240)

Upright/

pendent52 3.6 N

22.4

(320)Pendent 35 2.4 N

25.2

(360)Pendent 20 1.4 N

4012.2 or

12.1

16.8

(240)Pendent 52 3.6 N

22.4

(320)Pendent 40 2.8 N

25.2

(360)Pendent 25 1.7 N

45 13.7

14.0

(200)Pendent 90 6.2 Ye

16.8


22.4

(320)Pendent 40 2.8 N

25.2

(360)Pendent 40 2.8 N

25 7.6

30 9.1

14.0

(200)

Upright/

pendent50 3.4 N

16.8

(240)

Upright/

pendent35 2.4 N

22.4

(320)Pendent 25 1.7 N


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MaximumCeiling/Roof



In-RSprin


25.2

(360)Pendent 15 1.0 N

32 9.8

14.0

(200)

Upright/

pendent60 4.1 N

16.8

(240)

Upright/

pendent42 2.9 N

35 10.7

14.0

(200)

Upright/

pendent75 5.2 N

16.8

(240)

Upright/

pendent52 3.6 N

22.4

(320)Pendent 35 2.4 N

25.2

(360)Pendent 20 1.4 N

4012.2 or

12.1

16.8

(240)Pendent 52 3.6 N

22.4

(320)Pendent 40 2.8 N

25.2

(360)Pendent 25 1.7 N

45 13.7

14.0


16.8


22.4

(320)Pendent 40 2.8 N

25.2

(360)Pendent 40 2.8 N

16.2.3.2 ESFR s Sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelfracks are protected with in-rack sprinklers in accordance with 16.1.6.

16.2.3.2.1 Where solid shelves are used, in-rack sprinklers shall be installed in every level below the highestsolid shelf.

16.2.3.3 ESFR sSprinklers shall not be permitted to protect storage with open top containers.

16.2.3.4 ESFR sSprinkler systems shall be designed such that the minimum operating pressure is not lessthan that indicated in Table 16.2.3.1 for type of storage, commodity, storage height, and building heightinvolved.

16.2.3.5 The design area shall consist of the most hydraulically demanding area of 12 sprinklers, consisting of


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four sprinklers on each of three branch lines.

16.2.3.6 In-Rack Sprinkler Requirements for Rack Storage of Class I Through Class IV Commodities StoredUp to and Including 25 ft (7.6 m) in Height Where ESFR Sprinklers Are Being Used at the Ceiling .

16.2.3.6.1 Where required by Table 16.2.3.1, in-rack sprinklers shall be installed at the first tier level at orabove one-half of the storage height.

16.2.3.6.2 In-rack sprinklers shall be K-8.0 (115) or K-11.2 (160) quick-response, ordinary-temperaturesprinklers.

16.2.3.6.3 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the sprinklerdeflectors and the top of a tier of storage.


16.2.3.6.5* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues while notexceeding the maximum spacing rules.

16.2.3.6.6 Where distances between transverse flues exceed the maximum allowable distances, sprinklersshall be installed at the intersection of the transverse and longitudinal flues, and additional sprinklers shall beinstalled between transverse flues to meet the maximum distance rules.

16.2.3.6.7 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacing rules.

16.2.3.6.8 The water demand for sprinklers installed in racks shall be based on simultaneous operation of themost hydraulically remote eight sprinklers.

16.2.3.6.9 Each of the in-rack sprinklers described in 16.2.3.6.8 shall discharge at a minimum of 60 gpm (227L/min).

16.2.4 Special Design for Rack Storage of Class I Through Class IV Commodities Stored Up to and Including25 ft (7.6 m) in Height .

16.2.4.1 Slatted Shelves.

16.2.4.1.1* Slatted rack shelves shall be considered equivalent to solid rack shelves where the shelving is notconsidered open rack shelving or where the requirements of 16.2.4.1.2 are not met. (See Section C.20.)

16.2.4.1.2 A wet pipe system that is designed to provide a minimum of 0.6 gpm/ft2 (24.5 mm/min) density over

a minimum area of 2000 ft2 (186 m2) or K-14.0 (200) ESFR sprinklers operating at a minimum of 50 psi (3.4bar), K-16.8 (240) sprinklers operating at a minimum of 32 psi (2.2 bar), K-22.4 (320) ESFR sprinklers operatingat a minimum of 25 psi (1.7 bar), or K-25.2 (360) ESFR sprinklers operating at a minimum of 15 psi (1 bar) shallbe permitted to protect single-row and double-row racks with slatted rack shelving where all of the followingconditions are met:

Sprinklers shall be K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice spray sprinklers with a temperaturerating of ordinary, intermediate, or high and shall be listed for storage occupancies or shall be K-14.0(200), K-16.8 (240), K-22.4 (320) ESFR, or K-25.2 (360) ESFR.

1.

The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and unexpanded) Group A plastics, and exposed (unexpanded) Group Aplastics.

2.

Slats in slatted rack shelving shall be a minimum nominal 2 in. (51 mm) thick by maximum nominal 6 in.(152 mm) wide, with the slats held in place by spacers that maintain a minimum 2 in. (51 mm) openingbetween each slat.

3.

Where K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice sprinklers are used, there shall be no slattedshelf levels in the rack above 12 ft (3.7 m). Open rack shelving using wire mesh shall be permitted forshelf levels above 12 ft (3.7 m).

4.

Transverse flue spaces at least 3 in. (76 mm) wide shall be provided at least every 10 ft (3.1 m)horizontally.

5.

Longitudinal flue spaces at least 6 in. (152 mm) wide shall be provided for double-row racks.Longitudinal flue spaces shall not be required where ESFR sprinklers are used.

6.

The aisle widths shall be at least 7 ¹⁄2 ft (2.3 m).7.

The maximum roof height shall be 27 ft (8.2 m) or 30 ft (9.1 m) where ESFR sprinklers are used.8.

The maximum storage height shall be 20 ft (6.1 m).9.


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Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2 in.(51 mm) spaces between slats, nor shall they be placed on wire mesh shelves.

10.


Submitted on behalf of the SSD Redundancy Task Group. Proposed text eliminates duplicate/redundant text and is considered editorial.



Public Comment No. 261-NFPA 13-2014 [Global Input]All consolidate or elminate duplicate or redundanttext.








Public Comment No. 346-NFPA 13-2014 [Section No.16.3]

Related Item





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected but held



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1. Revise section 17.2.3.5.6 to read as follows:

17.2 . 3.5 . 6 The minimum operating pressure shall be either 30 psi (2.0 bar) or 60 psi (4.1 bar) basedupon the applicable storage and ceiling height for the installation as follows:

a) 30 psi (2.0 bar) for storage heights up to 25 ft (7.6 m) with a maximum ceiling height of 30 ft (9.1 m)

b) 60 psi (4.1 bar) for storage heights up to 25 ft. (7.6 m) with a maximum ceiling height of 40 ft (12.2m).

2. Revise section A.17.2.3.5 to read as follows:

A.17.2.3.5 The Fire Protection Research Foundation conducted a series of full-scale fire tests atUnderwriters Laboratories to develop protection criteria for the rack storage of exposed expanded GroupA plastic commodities. The tests are documented in the report, “Protection of Rack Stored ExposedExpanded Group A Plastics with ESFR Sprinklers and Vertical Barriers.” The criteria for exposedexpanded plastics are based on Tests 2, 3, 7 and 8 of the series, which investigated a 40 ft (12.2 m)ceiling with a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklerswith vertical barriers attached to the rack uprights at nominal 16 ft (4.9 m) apart. Vertical barriers of sheetmetal and 3⁄8 -in. plywood were both investigated. In Tests 1 through 6, transverse flue spaces betweencommodities were blocked. Comparing the results of Test 6 with blocked transverse flue spaces and Test7 with no blocking of transverse

flue spaces, the number of operated sprinklers decreased from 11 to 7 and improved suppression of thefire. The criteria for exposed expanded plastics are based on Tests 9 and 10 of the series, whichinvestigated a 30 ft (9.1 m) ceiling with a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklers with vertical barriers attached to the rack uprights at 16 ft (4.9 m) (nominal)apart. Vertical barriers of 3 ⁄8 -in. plywood was investigated.

The area limitation between the vertical barriers and aisles indicated in 17.3.3.5.9.2 will limit the depth ofa multiple-row rack arrangement. The hose stream allowance and water supply duration requirementsconsidered the burning characteristics of the exposed expanded plastic commodity that generates a highrate of heat release very quickly, but the commodity involved in the combustion process is then quicklyconsumed after fire suppression or control is achieved.

3. Revise section A.17.3.3.5 to read as follows:

A.17.3.3.5 The Fire Protection Research Foundation conducted a series of full-scale fire tests atUnderwriters Laboratories to develop protection criteria for the rack storage of exposed expanded GroupA plastic commodities. The tests are documented in the report, “Protection of Rack Stored ExposedExpanded Group A Plastics with ESFR Sprinklers and Vertical Barriers.” The criteria for exposedexpanded plastics are based on Tests 2, 3,7 and 8 of the series, which investigated a 40 ft (12.2 m) ceilingwith a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklers withvertical barriers attached to the rack uprights at nominal 16 ft (4.9 m) apart. Vertical barriers of sheet metaland 3 ⁄8 -in. plywood were both investigated. In Tests 1 through 6, transverse flue spaces betweencommodities were blocked. Comparing the results of Test 6 with blocked transverse flue spaces and Test7 with no blocking of transverse

flue spaces, the number of operated sprinklers decreased from 11 to 7 and improved suppression of thefire.

The area limitation between the vertical barriers and aisles indicated in 17.3.3.5.9.2 will limit the depth of amultiple-row rack arrangement. The hose stream allowance and water supply duration requirementsconsidered the burning characteristics of the exposed expanded plastic commodity that generates a highrate of heat release very quickly, but the commodity involved in the combustion process is then quicklyconsumed after fire suppression or control is achieved.




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TIA_13_16_1.pdf NFPA TIA 16-1 Log No. 1165


NOTE: This public input originates from Tentative Interim Amendment No. 16-1 (Log 1165) issued by the Standards Council on August 18, 2015 and per the NFPA Regs., needs to be reconsidered by the Technical Committee for the next edition of the Document.


Submitter Full Name: Tc On Aut-Ssd

Organization: NFPA


Street Address:

City:

State:

Zip:

Submittal Date: Tue May 17 11:57:19 EDT 2016


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Tentative Interim Amendment

NFPA 13 Standard for the Installation of Sprinkler Systems

2016 Edition Reference: 17.2.3.5.6, A.17.2.3.5 and A.17.3.3.5 TIA 16-1 (SC 15-8-14 / TIA Log #1165) Note: Text of the TIA was issued and approved for incorporation into the document prior to printing. 1. Revise section 17.2.3.5.6 to read as follows: 17.2.3.5.6 The minimum operating pressure shall be either 30 psi (2.0 bar) or 60 psi (4.1 bar) based upon the applicable storage and ceiling height for the installation as follows: a) 30 psi (2.0 bar) for storage heights up to 25 ft (7.6 m) with a maximum ceiling height of 30 ft (9.1 m) b) 60 psi (4.1 bar) for storage heights up to 25 ft. (7.6 m) with a maximum ceiling height of 40 ft (12.2 m). 2. Revise section A.17.2.3.5 to read as follows: A.17.2.3.5 The Fire Protection Research Foundation conducted a series of full-scale fire tests at Underwriters Laboratories to develop protection criteria for the rack storage of exposed expanded Group A plastic commodities. The tests are documented in the report, “Protection of Rack Stored Exposed Expanded Group A Plastics with ESFR Sprinklers and Vertical Barriers.” The criteria for exposed expanded plastics are based on Tests 2, 3, 7 and 8 of the series, which investigated a 40 ft (12.2 m) ceiling with a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklers with vertical barriers attached to the rack uprights at nominal 16 ft (4.9 m) apart. Vertical barriers of sheet metal and 3⁄8 -in. plywood were both investigated. In Tests 1 through 6, transverse flue spaces between commodities were blocked. Comparing the results of Test 6 with blocked transverse flue spaces and Test 7 with no blocking of transverse flue spaces, the number of operated sprinklers decreased from 11 to 7 and improved suppression of the fire. The criteria for exposed expanded plastics are based on Tests 9 and 10 of the series, which investigated a 30 ft (9.1 m) ceiling with a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklers with vertical barriers attached to the rack uprights at 16 ft (4.9 m) (nominal) apart. Vertical barriers of 3 ⁄8 -in. plywood was investigated. The area limitation between the vertical barriers and aisles indicated in 17.3.3.5.9.2 will limit the depth of a multiple-row rack arrangement. The hose stream allowance and water supply duration requirements considered the burning characteristics of the exposed expanded plastic commodity that generates a high rate of heat release very quickly, but the commodity involved in the combustion process is then quickly consumed after fire suppression or control is achieved.

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3. Revise section A.17.3.3.5 to read as follows: A.17.3.3.5 The Fire Protection Research Foundation conducted a series of full-scale fire tests at Underwriters Laboratories to develop protection criteria for the rack storage of exposed expanded Group A plastic commodities. The tests are documented in the report, “Protection of Rack Stored Exposed Expanded Group A Plastics with ESFR Sprinklers and Vertical Barriers.” The criteria for exposed expanded plastics are based on Tests 2, 3,7 and 8 of the series, which investigated a 40 ft (12.2 m) ceiling with a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklers with vertical barriers attached to the rack uprights at nominal 16 ft (4.9 m) apart. Vertical barriers of sheet metal and 3 ⁄8 -in. plywood were both investigated. In Tests 1 through 6, transverse flue spaces between commodities were blocked. Comparing the results of Test 6 with blocked transverse flue spaces and Test 7 with no blocking of transverse flue spaces, the number of operated sprinklers decreased from 11 to 7 and improved suppression of the fire. The area limitation between the vertical barriers and aisles indicated in 17.3.3.5.9.2 will limit the depth of a multiple-row rack arrangement. The hose stream allowance and water supply duration requirements considered the burning characteristics of the exposed expanded plastic commodity that generates a high rate of heat release very quickly, but the commodity involved in the combustion process is then quickly consumed after fire suppression or control is achieved. Issue Date: August 18, 2015 Effective Date: September 7, 2015

(Note: For further information on NFPA Codes and Standards, please see www.nfpa.org/codelist) Copyright © 2015 All Rights Reserved

NATIONAL FIRE PROTECTION ASSOCIATION

Page 82 of 1114



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1. Revise Table A.5.6.3 to read as follows:

Textile

Materials/Products Cloth; natural fibers; baled Class III

Cloth; synthetic cloth Class IV

Clothing; natural fibers (e.g. wool, cotton) and viscose Class III

Cotton; cartoned Class III

Diapers; cotton or linen Class III

Diapers; plastic or nonwoven fabric; cartoned Class IV

Diapers;plasticornonwovenfabric;plastic-wrapped;uncartonedGroupANonexpan

Fabric; rayon and nylon Class IV

Fabric; synthetic (except rayon and nylon); greater than 50/50 blend

Group A Nonexpanded

Fabric; synthetic (except rayon and nylon); up to 50/50 blend Class III

Fabric;vinyl-coated(e.g.tablecloth)cartoned GroupANonexpan

Fibers; rayon and nylon; baled Class IV

Fibers;synthetic(exceptrayonandnylon);baled GroupANonexpan

Thread or yarn; rayon and nylon; wood or paper spools Class IV

Threador


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yarn;rayonornylon;plasticspools GroupANonexpand

Thread or yarn; synthetic (except rayon and nylon); greater than

50/50 blend; paper or wood spools Class IV


50/50 blend; plastic spools

Thread or yarn; synthetic (except rayon and nylon); up to 50/50 blend; plasticspools

Thread or yarn; synthetic (except rayon and nylon); up to 50/50

Group A Nonexpanded Group A Nonexpanded

blend; wood or paper spools Class III


Textile

Materials/Products Cloth; synthetic cloth

Diapers; plastic or nonwoven fabric; cartoned

Fabric; rayon and nylon

Fibers; rayon and nylon; baled

Thread or yarn; rayon and nylon; wood or paper spools

Thread or yarn; synthetic (except rayon and nylon); greater than 50/50 blend;

paper or wood spools

3. Revise Table A.5.6.4.1 to read as follows:

Textile

Materials/Products Diapers; plastic or nonwoven fabric; plastic-wrapped; uncartoned Nonexpanded

Fabric; vinyl-coated (e.g. tablecloth); cartoned Nonexpanded

Fabric; synthetic (except rayon and nylon); greater than 50/50

blend Nonexpanded

Fibers; synthetic (except rayon and nylon); baled Nonexpanded

Thread or yarn; rayon or nylon; plastic spools Nonexpanded


50/50 blend; plastic spools Nonexpanded

Thread or yarn; synthetic (except rayon and nylon); up to 50/50

blend; plastic spools


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Nonexpanded



TIA_13_16_4.pdf NFPA TIA 16-4 (Log No. 1184)





Organization: NFPA


Street Address:

City:

State:

Zip:



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2016 Edition Reference: Tables A.5.6.3, A.5.6.4 and A.5.6.4.1 TIA 16-4 (SC 15-8-17 / TIA Log #1184) Note: Text of the TIA was issued and incorporated into the document prior to printing, therefore no separate publication is necessary. 1. Revise Table A.5.6.3 to read as follows:

Textile Materials/Products

Cloth; natural fibers; baled Class III


Clothing; natural fibers (e.g. wool, cotton) and viscose Class III




Diapers; plastic or nonwoven fabric; plastic-wrapped; uncartonedGroup A Nonexpanded



Group A Nonexpanded

Fabric; synthetic (except rayon and nylon); up to 50/50 blend Class III

Fabric; vinyl-coated (e.g. tablecloth); cartoned Group A Nonexpanded


Fibers; synthetic (except rayon and nylon); baled Group A Nonexpanded

Page 87 of 1114

Thread or yarn; rayon and nylon; wood or paper spools Class IV Thread or yarn; rayon or nylon; plastic spools

Group A Nonexpanded

Thread or yarn; synthetic (except rayon and nylon); greater than 50/50 blend; paper or wood spools

Class IV

Thread or yarn; synthetic (except rayon and nylon); greater than 50/50 blend; plastic spools

Group A Nonexpanded

Thread or yarn; synthetic (except rayon and nylon); up to 50/50 blend; plastic spools

Group A Nonexpanded

Thread or yarn; synthetic (except rayon and nylon); up to 50/50 blend; wood or paper spools

Class III



Cloth; synthetic cloth





Thread or yarn; synthetic (except rayon and nylon); greater than 50/50 blend; paper or wood spools



Diapers; plastic or nonwoven fabric; plastic-wrapped; uncartoned Nonexpanded

Fabric; vinyl-coated (e.g. tablecloth); cartoned Nonexpanded


Nonexpanded

Fibers; synthetic (except rayon and nylon); baled Nonexpanded

Thread or yarn; rayon or nylon; plastic spools Nonexpanded

Thread or yarn; synthetic (except rayon and nylon); greater than 50/50 blend; plastic spools

Nonexpanded

Thread or yarn; synthetic (except rayon and nylon); up to 50/50 blend; plastic spools

Nonexpanded

Page 88 of 1114

Issue Date: August 18, 2015 Effective Date: September 7, 2015



Page 89 of 1114


1. Revise Subsection 5.6.3.3 to read as follows:

5.6.3.3* Class III.

5.6.3.3.1 A Class III commodity shall be defined as a product fashioned from wood, paper, natural fibers,or Group C plastics with or without cartons, boxes, or crates and with or without pallets.

5.6.3.3.2*

A Class III commodity shall be permitted to contain a limited amount (5 percent or less by weight ofunexpanded plastic or 5 percent or less by volume of expanded plastic) of Group A or Group B plastics.

A.5.6.3.3.2 Where the commodity includes a single type of plastic, the five percent limit applies to theunexpanded or expanded type, but not both. For commodities with a mixture of expanded andunexpanded plastics, see 5.6.3.3.3 and the associated figures.

5.6.3.3.3 Class III commodities containing a mix of both Group A expanded and unexpanded plasticsshall comply with Figure 5.6.3.3.3.1 where they are within cartons, boxes, or crates, or Figure

5.6.3.3.3.2 where they are exposed.

2. Revise Figure 5.6.3.4.2 to read as follows:

3. Add a new Figure 5.6.3.3.3.2 to read as follows:


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4. Revise Subsection 5.6.3.4 to read as follows:

5.6.3.4* Class IV.

5.6.3.4.1 A Class IV commodity shall be defined as a product, with or without pallets, that meets one ofthe following criteria:

(1) Constructed partially or totally of Group B plastics

(2) Consists of free-flowing Group A plastic materials

(3) Cartoned, or within a wooden container, that contains (greater than 5 percent and up to 15percent by weight of Group A unexpanded plastic.

(4) Cartoned, or within a wooden container, that contains greater than 5 percent and up to 25percent by volume of expanded Group A plastics.

(5) Cartoned, or within a wooden container, that contains a mix of Group A expanded andunexpanded plastics and complies with Figure 5.6.3.3.3.1.

(6) Exposed, that contains greater than 5 percent and up to 15 percent by weight of Group A

unexpanded plastic.

(7) Exposed, that contains a mix of Group A expanded and unexpanded plastics and complies with

Figure 5.6.3.3.3.2.

5.6.3.4.2 The remaining materials shall be permitted to be noncombustible, wood, paper, natural orfibers, or Group B or Group C plastics.

5. Revise Subsection 5.6.4 to read as follows:

5.6.4* Classification of Plastics, Elastomers, and Rubber. Plastics, elastomers, and rubber shall beclassified as Group A, Group B, or Group C.

5.6.4.1* Group A. The following materials shall be classified as Group A: (1) ABS((acrylonitrile-butadiene-styrene copolymer)

(2) Acetal (polyformaldehyde)


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(3) Acrylic (polymethyl methacrylate) (4) Butyl rubber

(5) Cellulosics (cellulose acetate, cellulose acetate butyrate, ethyl cellulose) (6) EPDM(ethylene-propylene rubber)

(7) FRP (fiberglass-reinforced polyester) (8) Natural rubber

(9) Nitrile-rubber (acrylonitrile-butadiene-rubber) (10) Nylon (nylon 6, nylon 66)

(11) PET (thermoplastic polyester) (12) Polybutadiene

(13) Polycarbonate

(14) Polyester elastomer

(15) Polyethylene (16) Polypropylene (17) Polystyrene (18) Polyurethane

(19) PVC (polyvinyl chloride – highly plasticized, with plasticizer content greater than 20percent)(rarely found)

(20) PVF (polyvinyl fluoride)

(21) SAN (styrene acrylonitrile)

(22) SBR (styrene-butadiene rubber)

5.6.4.1.1* Group A plastics shall be further subdivided as either expanded or unexpanded.

5.6.4.1.1.1 A Group A expanded plastic commodity shall be defined as a product, with or without pallets,that meets one of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 40 percent by volume of

Group A expanded plastic.

(2) Exposed, that contains greater than 25 percent by volume of Group A expanded plastic.

5.6.4.1.1.2 A Group A unexpanded plastic commodity shall be defined as a product, with or withoutpallets, that meets one of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 15 percent by weight of

Group A unexpanded plastic.

(2) Cartoned, or within a wooden container, that contains greater than 25 percent and up to 40percent by volume of Group A expanded plastic.

(3) Cartoned, or within a wooden container, that contains a mix of Group A unexpanded andexpanded plastics, in compliance with Figure 5.6.3.3.3.1.

(4) Exposed, that contains greater than 15 percent by weight of Group A unexpanded plastic. (5)Exposed, that contains greater than 5 percent and up to 25 percent by volume of Group A

expanded plastic.

(6) Exposed, that contains a mix of Group A unexpanded and expanded plastics, in compliance with

Figure 5.6.3.3.3.2.

5.6.4.1.1.3 The remaining materials shall be permitted to be noncombustible, wood, paper, natural orsynthetic fibers, or Group A, Group B, or Group C plastics.

5.6.4.2 Group B.

The following materials shall be classified as Group B: (1) Chloroprene rubber

(2) Fluoroplastics (ECTFE – ethylene-chlorotrifluoro-ethylene copolymer; ETFE – ethylene-tetrafluoroethylene-copolymer; FEP – fluorinated ethylene-propylene copolymer)

(3) Silicone rubber

5.6.4.3 Group C.

The following materials shall be classified as Group C:

(1) Fluoroplastics (PCTFE – polychlorotrifluoroethylene; PTFE – polytetrafluoroethylene) (2) Melamine (melamine formaldehyde)

(3) Phenolic

(4) PVC (polyvinyl chloride – flexible – PVC’s with plasticizer content up to 20 percent) (5)


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PVDC (polyvinylidene chloride)

(6) PVDF (polyvinylidene fluoride) (7) Urea (urea formaldehyde)

6. Revise A.5.6 to read as follows:

A.5.6 Specification of the type, amount, and arrangement of combustibles for any commodityclassification is essentially an attempt to define the potential fire severity, based on its burning

characteristics, so the fire can be successfully controlled by the prescribed sprinkler protection for thecommodity class. In actual storage situations, however, many storage arrays do not fit precisely into oneof the fundamental classifications; therefore, the user needs to make judgments after comparing eachclassification to the existing storage conditions. Storage arrays consist of thousands of products, whichmakes it impossible to specify all the acceptable variations for any class. As an alternative, a variety ofcommon products are classified in this annex based on judgment, loss experience, and fire test results.Table A.5.6 provides examples of commodities not addressed by the classifications in Section 5.6. Thecommodities listed in Table A.5.6 are outside the scope of NFPA 13 protection.

Table A.5.6.3 is an alphabetized list of commodities with corresponding classifications.

Tables A.5.6.3.1, A.5.6.3.2, A.5.6.3.3, A.5.6.3.4, and A.5.6.4.1 provide examples of commodities within aspecific class.

…


Table A.5.6.1.1 General Guide to Identifying the Commodity Class for Solid Combustibles

Characteristics of Unit LoadCommodityClassMaterial Used to Construct

ProductPackaging Material

PalletMaterial

Noncombustible Product

Entirely noncombustibleNone or single?layer corrugatedcartons

None, metal, orwood

Class I

Entirely noncombustibleNone or single?layer corrugatedcartons

PlasticClass I, II or III; see

Section 5.6.2

Entirely noncombustibleMultiple?layered corrugatedcartons, wooden crates, orwood boxes

None, metal, orwood

Class II

Entirely noncombustibleMultiple?layered corrugatedcartons, wooden crates, orwood boxes

Plastic

Class II, III or IV;see

Section 5.6.2

Entirely noncombustibleCorrugated cartons, woodencrates, or wood boxes, withinternal plastic packaging

None, metal, orwood

See Figure5.6.3.3.3.1

Entirely noncombustibleCorrugated cartons, woodencrates, or wooden boxes, withinternal plastic packaging

PlasticSee Figure5.6.3.3.3.1 andSection 5.6.2

Wood, Paper, Natural Fibers,or Group

C Plastics

Entirely wood, paper, naturalfibers, or Group C plastics, ora mix of these with

None, corrugated cartons,wooden crates, or wood boxes

None, metal, orwood

Class III


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Page 93 of 1114

noncombustible materials.

Entirely wood, paper, naturalfibers, or Group C plastics, ora mix of these withnoncombustible materials.

Corrugated cartons, woodencrates, or wood boxes, withinternal plastic packaging

None, metal, orwood




Plastic

Class III, IV orcartonedunexpanded GroupA plastic; SseeSection

5.6.2



PalletMaterial




Group B Plastics

Entirely Group B plastics, or amix of these withnoncombustible, wood, paper,natural fibers, or Group Cplastics materials.


None, metal, orwood

Class IV


Corrugated cartons, woodencrates, or wood boxes

Plastic

Class IV orcartonedunexpanded GroupA plastic; seeSection

5.6.2


None Plastic


5.6.2


Corrugated cartons, woodencrates, or wood boxes, withplastic internal packaging

None, metal, orwood






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Group A Plastics

Free?flowing Group A plasticmaterials

Corrugated cartons, woodencrates, wood boxes, or bagged

None, metal,wood

Class IV

Free?flowing Group A plasticmaterials

Corrugated cartons, woodencrates, wood boxes, or bagged

Plastic


5.6.2

Entirely unexpanded Group Aplastic


None, metal,wood, or plastic

Cartonedunexpanded

Group A plastic


NoneNone, metal,wood, or plastic

Exposedunexpanded

Group A plastic





Entirely expanded Group Aplastic

Corrugated cartons, woodencrates, or wood boxes, with orwithout internal plasticpackaging


Cartonedexpanded

Group A plastic

Entirely expanded Group Aplastic

NoneNone, metal,wood, or plastic

Exposed expanded

Group A plastic



PalletMaterial

Mix of Group A plastics,noncombustible, wood, paper,natural fibers, Group B or Cplastics materials.

Corrugated cartons, woodencrates, or wood boxes, with orwithout internal plasticpackaging

None, metal orwood






NoneNone, metal orwood



None PlasticSee Figure5.6.3.3.3.2 andSection 5.6.2



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TIA_13_16_3.pdf NFPA TIA 16-3 (Log No. 1183)





Organization: NFPA


Street Address:

City:

State:

Zip:



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1



2016 Edition Reference: 5.6.3.3, Figure 5.6.3.4.2, Figure 5.6.3.3.3.2(new), 5.6.3.4, 5.6.4, A.5.6 and Table A.5.6.1.1 TIA 16-3 (SC 15-8-16 / TIA Log #1183) Note: Text of the TIA was issued and incorporated into the document prior to printing, therefore no separate publication is necessary. 1. Revise Subsection 5.6.3.3 to read as follows: 5.6.3.3* Class III. 5.6.3.3.1 A Class III commodity shall be defined as a product fashioned from wood, paper, natural fibers, or Group C plastics with or without cartons, boxes, or crates and with or without pallets. 5.6.3.3.2* A Class III commodity shall be permitted to contain a limited amount (5 percent or less by weight of unexpanded plastic or 5 percent or less by volume of expanded plastic) of Group A or Group B plastics. A.5.6.3.3.2 Where the commodity includes a single type of plastic, the five percent limit applies to the unexpanded or expanded type, but not both. For commodities with a mixture of expanded and unexpanded plastics, see 5.6.3.3.3 and the associated figures. 5.6.3.3.3 Class III commodities containing a mix of both Group A expanded and unexpanded plastics shall comply with Figure 5.6.3.3.3.1 where they are within cartons, boxes, or crates, or Figure 5.6.3.3.3.2 where they are exposed.

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2

2. Revise Figure 5.6.3.4.2 to read as follows:

3. Add a new Figure 5.6.3.3.3.2 to read as follows:

Page 98 of 1114

3

4. Revise Subsection 5.6.3.4 to read as follows: 5.6.3.4* Class IV. 5.6.3.4.1 A Class IV commodity shall be defined as a product, with or without pallets, that meets one of the following criteria: (1) Constructed partially or totally of Group B plastics (2) Consists of free-flowing Group A plastic materials (3) Cartoned, or within a wooden container, that contains (greater than 5 percent and up to 15 percent

by weight of Group A unexpanded plastic. (4) Cartoned, or within a wooden container, that contains greater than 5 percent and up to 25 percent by

volume of expanded Group A plastics. (5) Cartoned, or within a wooden container, that contains a mix of Group A expanded and unexpanded

plastics and complies with Figure 5.6.3.3.3.1. (6) Exposed, that contains greater than 5 percent and up to 15 percent by weight of Group A

unexpanded plastic. (7) Exposed, that contains a mix of Group A expanded and unexpanded plastics and complies with

Figure 5.6.3.3.3.2.

5.6.3.4.2 The remaining materials shall be permitted to be noncombustible, wood, paper, natural or fibers, or Group B or Group C plastics. 5. Revise Subsection 5.6.4 to read as follows: 5.6.4* Classification of Plastics, Elastomers, and Rubber. Plastics, elastomers, and rubber shall be classified as Group A, Group B, or Group C. 5.6.4.1* Group A. The following materials shall be classified as Group A:

(1) ABS ((acrylonitrile-butadiene-styrene copolymer) (2) Acetal (polyformaldehyde) (3) Acrylic (polymethyl methacrylate) (4) Butyl rubber (5) Cellulosics (cellulose acetate, cellulose acetate butyrate, ethyl cellulose) (6) EPDM (ethylene-propylene rubber) (7) FRP (fiberglass-reinforced polyester) (8) Natural rubber (9) Nitrile-rubber (acrylonitrile-butadiene-rubber) (10) Nylon (nylon 6, nylon 66) (11) PET (thermoplastic polyester) (12) Polybutadiene (13) Polycarbonate (14) Polyester elastomer (15) Polyethylene (16) Polypropylene (17) Polystyrene (18) Polyurethane (19) PVC (polyvinyl chloride – highly plasticized, with plasticizer content greater than 20

percent)(rarely found) (20) PVF (polyvinyl fluoride)

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4

(21) SAN (styrene acrylonitrile) (22) SBR (styrene-butadiene rubber)

5.6.4.1.1* Group A plastics shall be further subdivided as either expanded or unexpanded. 5.6.4.1.1.1 A Group A expanded plastic commodity shall be defined as a product, with or without pallets, that meets one of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 40 percent by volume of Group A expanded plastic.

(2) Exposed, that contains greater than 25 percent by volume of Group A expanded plastic. 5.6.4.1.1.2 A Group A unexpanded plastic commodity shall be defined as a product, with or without pallets, that meets one of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 15 percent by weight of Group A unexpanded plastic.

(2) Cartoned, or within a wooden container, that contains greater than 25 percent and up to 40 percent by volume of Group A expanded plastic.

(3) Cartoned, or within a wooden container, that contains a mix of Group A unexpanded and expanded plastics, in compliance with Figure 5.6.3.3.3.1.

(4) Exposed, that contains greater than 15 percent by weight of Group A unexpanded plastic. (5) Exposed, that contains greater than 5 percent and up to 25 percent by volume of Group A

expanded plastic. (6) Exposed, that contains a mix of Group A unexpanded and expanded plastics, in compliance with

Figure 5.6.3.3.3.2. 5.6.4.1.1.3 The remaining materials shall be permitted to be noncombustible, wood, paper, natural or synthetic fibers, or Group A, Group B, or Group C plastics. 5.6.4.2 Group B. The following materials shall be classified as Group B:

(1) Chloroprene rubber (2) Fluoroplastics (ECTFE – ethylene-chlorotrifluoro-ethylene copolymer; ETFE – ethylene-

tetrafluoroethylene-copolymer; FEP – fluorinated ethylene-propylene copolymer) (3) Silicone rubber

5.6.4.3 Group C. The following materials shall be classified as Group C:

(1) Fluoroplastics (PCTFE – polychlorotrifluoroethylene; PTFE – polytetrafluoroethylene) (2) Melamine (melamine formaldehyde) (3) Phenolic (4) PVC (polyvinyl chloride – flexible – PVC’s with plasticizer content up to 20 percent) (5) PVDC (polyvinylidene chloride) (6) PVDF (polyvinylidene fluoride) (7) Urea (urea formaldehyde)

6. Revise A.5.6 to read as follows: A.5.6 Specification of the type, amount, and arrangement of combustibles for any commodity classification is essentially an attempt to define the potential fire severity, based on its burning

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5

characteristics, so the fire can be successfully controlled by the prescribed sprinkler protection for the commodity class. In actual storage situations, however, many storage arrays do not fit precisely into one of the fundamental classifications; therefore, the user needs to make judgments after comparing each classification to the existing storage conditions. Storage arrays consist of thousands of products, which makes it impossible to specify all the acceptable variations for any class. As an alternative, a variety of common products are classified in this annex based on judgment, loss experience, and fire test results. Table A.5.6 provides examples of commodities not addressed by the classifications in Section 5.6. The commodities listed in Table A.5.6 are outside the scope of NFPA 13 protection. Table A.5.6.3 is an alphabetized list of commodities with corresponding classifications. Tables A.5.6.3.1, A.5.6.3.2, A.5.6.3.3, A.5.6.3.4, and A.5.6.4.1 provide examples of commodities within a specific class. … 7. Revise Table A.5.6.1.1 to read as follows: Table A.5.6.1.1 General Guide to Identifying the Commodity Class for Solid Combustibles

Characteristics of Unit Load Commodity Class

Material Used to Construct Product Packaging Material Pallet Material


Entirely noncombustible None or single‐layer corrugated cartonsNone, metal, or wood

Class I

Entirely noncombustible None or single‐layer corrugated cartons Plastic Class I, II or III; see Section 5.6.2

Entirely noncombustible Multiple‐layered corrugated cartons, wooden crates, or wood boxes

None, metal, or wood

Class II

Entirely noncombustible Multiple‐layered corrugated cartons, wooden crates, or wood boxes

Plastic Class II, III or IV; see Section 5.6.2

Entirely noncombustible Corrugated cartons, wooden crates, or wood boxes, with internal plastic packaging


See Figure 5.6.3.3.3.1

Entirely noncombustible Corrugated cartons, wooden crates, or wooden boxes, with internal plastic packaging

Plastic See Figure 5.6.3.3.3.1 and Section 5.6.2

Wood, Paper, Natural Fibers, or Group C Plastics

Entirely wood, paper, natural fibers, or Group C plastics, or a mix of these with noncombustible materials.

None, corrugated cartons, wooden crates, or wood boxes


Class III


Corrugated cartons, wooden crates, or wood boxes, with internal plastic packaging





Plastic

Class III, IV or cartoned unexpanded Group A plastic; Ssee Section 5.6.2

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6




Corrugated cartons, wooden crates, or wood boxes, with internal plastic packaging


Group B Plastics

Entirely Group B plastics, or a mix of these with noncombustible, wood, paper, natural fibers, or Group C plastics materials.



Class IV


Corrugated cartons, wooden crates, or wood boxes

Plastic

Class IV or cartoned unexpanded Group A plastic; see Section 5.6.2


None Plastic



Corrugated cartons, wooden crates, or wood boxes, with plastic internal packaging




Corrugated cartons, wooden crates, or wood boxes, with plastic internal packaging


Group A Plastics

Free‐flowing Group A plastic materials Corrugated cartons, wooden crates, wood boxes, or bagged

None, metal, wood Class IV

Free‐flowing Group A plastic materials Corrugated cartons, wooden crates, wood boxes, or bagged

Plastic


Entirely unexpanded Group A plastic Corrugated cartons, wooden crates, or wood boxes

None, metal, wood, or plastic

Cartoned unexpanded Group A plastic

Entirely unexpanded Group A plastic None None, metal, wood, or plastic

Exposed unexpanded Group A plastic

Entirely unexpanded Group A plastic Corrugated cartons, wooden crates, or wood boxes, with internal plastic packaging



Entirely expanded Group A plastic Corrugated cartons, wooden crates, or wood boxes, with or without internal plastic packaging


Cartoned expanded Group A plastic

Entirely expanded Group A plastic None None, metal, wood, or plastic

Exposed expanded Group A plastic

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7



Mix of Group A plastics, noncombustible, wood, paper, natural fibers, Group B or C plastics materials.

Corrugated cartons, wooden crates, or wood boxes, with or without internal plastic packaging

None, metal or wood



Corrugated cartons, wooden crates, or wood boxes



None None, metal or wood



None Plastic See Figure 5.6.3.3.3.2 and Section 5.6.2

Issue Date: August 18, 2015 Effective Date: September 7, 2015



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Figure 15.2.2.1: Note

Note: Cartons that contain Group A plastic material are permitted to be treated as Class IVcommodities under either of the following conditions:?

- (2) The amount and arrangement of Group A plastic material within an ordinary a carton with asingle layer of corrugation would not be expected to significantly increase the fire hazard.


This change clarifies that this is two independent conditions and the meaning of ordinary.




Street Address:

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Submittal Date: Tue Jun 28 12:16:04 EDT 2016


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Throughout the standard, when referring to Group A plastic commodities, revise the word “uncartoned” to“exposed” and similarly revise “unexpanded” to “nonexpanded”.


During the previous cycle, First Revision No. 177 took the action to revise the word “uncartoned” to “exposed” and similarly revise “unexpanded” to “nonexpanded” throughout the standard. However the term “uncartoned” is still in place in several places and the term “unexpanded” was retained in numerous locations. Therefore, for this cycle the change of terminology should be completed. For clarity, the verbiage used should always be consistent.


Submitter Full Name: Larry Keeping

Organization: PLC Fire Safety Solutions

Street Address:

City:

State:

Zip:



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Public Input No. 180-NFPA 13-2016 [ Section No. 3.9.1.16 ]

3.9.1.16 High-Piled Storage.

Solid-piled, palletized, rack storage, bin box, and shelf storage in excess of 12 ft (3.7 m) in height or plasticcommodities in excess of 5 ft in height .


The current definition does not address plastic commodities.


Submitter Full Name: John Deutsch

Organization: VFS Fire & Security Services

Street Address:

City:

State:

Zip:

Submittal Date: Sat Jun 04 15:25:07 EDT 2016


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Public Input No. 437-NFPA 13-2016 [ Sections 3.9.1.16, 3.9.1.17 ]

Sections 3.9.1.16, 3.9.1.17

3.9.1.16 High-Piled Storage.

Solid-piled, palletized, rack storage, bin box, and shelf storage in storage of Class I to IV commodities in excess of 12 ft (3.7 m) in height and and solid-piled, palletized, rack storage, bin box, and shelfstorage of Group A plastic commodities in excess of 5 ft (1 . 5 m) in height . .

3.9.1.17 * Low-Piled Storage.

Solid-piled, palletized, rack storage, bin box, and shelf storage up to of Class I to IV commodities up to12 ft (3.7 m) in height and solid-piled, palletized, rack storage, bin box, and shelf storage of Group Aplastic commodities up to of 5 ft (1 . 5 m) in height .


The current definitions for high-piled and low-piled storage are misleading:

High-Piled Storage - As per section 3.9.1.15, a high-challenge fire hazard is typical of that produced by fires in combustible high-piled storage. However, the challenge provided by Group A plastic commodities is considerably higher than that from Class I to IV commodities stored to the same height. For example, as per Table 15.2.6(a), for a ceiling height of 20 ft, storage to 12 ft of Group A cartoned, nonexpanded commodities in a stable pile requires a design criteria of 0.60 gpm/ft² with a design area of 2500 ft², whereas as per Table 13.2.1, Class I to IV commodities stored under those same conditions only require an OH2 design of 0.20 gpm/ft² over 1500 ft².

Low-Piled Storage – According to First Revision No. 311 from the previous cycle, the definition for low-piled storage was introduced as an editorial matter, to better reflect that Chapter 13 is not just for miscellaneous storage. However, since the definition does not differentiate between commodity types, there is an implication that Chapter 13 should apply to general storage of Group. A to 12 ft, when in fact, the scope of Chapter 13 is for just 5 ft maximum storage, as directed by 15.2.1 and 17.2.1.1.

The revised definitions are therefore offered to resolve the discrepancies of the current definitions.




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3.9.1.19 * Open-Top Container.

A container of any shape that is greater than 3 ft² (0.3 m²) in area, entirely or partially open on the top andarranged so as to allow for the collection of discharging sprinkler water cascading through the storagearray.


The current definitions for open-top containers is too broad.In accordance with the current definition, a scrub bucket or a waste basket would have to be considered an open-top container.

Industry commonly uses small parts bins, such as those illustrated in the photograph below, that are small enough so that water would not be prevented from penetrating to the lower tiers.

As per Annex C, Section C.12, the open-top containers used in the testing approximated slave pallets. Since a pallet is considered to measure 4 ft to 5 ft (1.2 m to 1.5 m) on a side, small bins less than 3 ft² (0.3 m²) in area would not be comparable to slave pallets, so they should not be treated as open-top containers.




Street Address:

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3.9.3.5 Horizontal Barrier.

A solid barrier in the horizontal position covering the entire rack, including all flue spaces at certain heightincrements, to prevent vertical fire spread. A 3 in. (75 mm) gap shall be allowed at rack uprights.


The definition is in conflict with Figures 16.1.2.4.4.1 (A), 16.1.2.4.4.2 (A), 16.1.2.4.4.3 (A), 17.1.2.9.4.1 (A), 17.1.2.9.4.2(A) and 17.1.2.9.4.3(A) which show a 3" gap down the length of the rack. The proposed change is made to be consistent with the figures.


Submitter Full Name: Gerald Schultz

Organization: The FPI Consortium, Inc.

Affilliation: none

Street Address:

City:

State:

Zip:

Submittal Date: Thu Jun 23 17:55:08 EDT 2016


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Public Input No. 12-NFPA 13-2016 [ Chapter 5 ]

Chapter 5 Classification of Occupancies and Commodities


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5.1 Material combustibility

5.1.1 * Noncombustible material [NFPA 5000, 7.1.4.1]

5.1.1.1 A material that complies with any of the following shall be considered a noncombustible material:

(1)* The material, in the form it is used, and under the conditions anticipated, will not ignite, burn, supportcombustion, or release flammable vapors when subjected to fire or heat.

(2) The material is reported as passing ASTM E136, Standard Test Method for Behavior of Materials in aVertical Tube Furnace at 740 degrees C.

(3) The material is reported as complying with the pass/fail criteria of ASTM E136 when tested inaccordance with the test method and procedure of ASTM E2652, Standard Test Method for Behavior ofMaterials in a Tube Furnace with a Cone-Shaped Airflow Stabilizer at 750 degrees C.

5.1.1.2 Where the term limited combustible is used in this standard, it shall also include the termnoncombustible.

A.5.1.1 The provisions of 5.1.1 do not require inherently noncombustible materials to be tested in order tobe classified as noncombustible materials. [NFPA 5000]

A5.1.1.1 (1) Examples of such materials include steel, concrete, masonry and glass. [NFPA 5000]

5.1.2* Limited combustible material [NFPA 5000, 7.1.4.2]

5.1.2.1 A material shall be considered a limited combustible material where both of the following conditionsof 5.1.2.1(1) and 5.1.21.(2), and the conditions of either 5.1.2.1.1 or 5.1.2.1.2 are met:

(1) The material does not comply with the requirements of a noncombustible material in accordance with5.1.1.

(2) The material, in the form in which it is used, exhibits a potential heat value not exceeding 3500 BTU/lb(8141 kJ/kg), when tested in accordance with NFPA 259, Standard Test Method for Potential Heat ofBuilding Materials.

5.1.2.1.1 The material shall have a structural base of noncombustible material with a surfacing notexceeding a thickness of 1/8 in. (3.2 mm) where the surfacing exhibits a flame spread index not greaterthan 50 when tested in accordance with ASTM E84, Standard Test Method for Surface BurningCharacteristics of Building Materials, or of ANSI/UL 723, Standard for Test for Surface BurningCharacteristics of Building Materials.

5.1.2.1.2 The material shall be composed of materials that in the form and thickness used, neither exhibit aflame spread index greater than 25 nor evidence of continued progressive combustion when tested inaccordance with ASTM E84 or ANSI/UL 723 and are of such composition that all surfaces that would beexposed by cutting through the material on any plane would neither exhibit a flame spread index greaterthan 25 nor exhibit evidence of continued progressive combustion when tested in accordance with ASTME84 or ANSI/UL 723.

5.1.2.1.3 Where the term limited combustible is used in this standard, it shall also include the termnoncombustible.

A.5.1.2 Material subject to increase in combustibility or flame spread index beyond the limits hereinestablished through the effects of age, moisture, or other atmospheric condition is considered combustible(See NFPA 259 and NFPA 220). [NFPA 5000 A.7.1.4.2]

This requires renumbering all sections from 5.1 through 5.6 (and their associated annexes) as 5.2 through5.7.

This requires adding ASTM E136 and ASTM E2652 (both 2015) to the list of ASTM references in Chapter2.

Please renumber subsequent sections

5.1 * Classification of Occupancies.

5.1.1

Occupancy classifications for this standard shall relate to sprinkler design, installation, and water supplyrequirements only.


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5.1.2

Occupancy classifications shall not be intended to be a general classification of occupancy hazards.

5.2* Light Hazard Occupancies.

Light hazard occupancies shall be defined as occupancies or portions of other occupancies where thequantity and/or combustibility of contents is low and fires with relatively low rates of heat release areexpected.

5.3* Ordinary Hazard Occupancies.

5.3.1* Ordinary Hazard (Group 1).

5.3.1.1

Ordinary hazard (Group 1) occupancies shall be defined as occupancies or portions of other occupancieswhere combustibility is low, quantity of combustibles is moderate, stockpiles of combustibles do not exceed8 ft (2.4 m), and fires with moderate rates of heat release are expected.

5.3.1.2

Dedicated and miscellaneous storage shall be protected in accordance with Chapter 12 and Chapter 13 asapplicable.

5.3.2* Ordinary Hazard (Group 2).

5.3.2.1

Ordinary hazard (Group 2) occupancies shall be defined as occupancies or portions of other occupancieswhere the quantity and combustibility of contents are moderate to high, stockpiles of contents withmoderate rates of heat release do not exceed 12 ft (3.7 m), and stockpiles of contents with high rates ofheat release do not exceed 8 ft (2.4 m).

5.3.2.2

Dedicated and miscellaneous storage shall be protected in accordance with Chapter 12 and Chapter 13 asapplicable.

5.4 Extra Hazard Occupancies.

5.4.1* Extra Hazard (Group 1).

Extra hazard (Group 1) occupancies shall be defined as occupancies or portions of other occupancieswhere the quantity and combustibility of contents are very high and dust, lint, or other materials are present,introducing the probability of rapidly developing fires with high rates of heat release but with little or nocombustible or flammable liquids.

5.4.2* Extra Hazard (Group 2).

Extra hazard (Group 2) occupancies shall be defined as occupancies or portions of other occupancies withmoderate to substantial amounts of flammable or combustible liquids or occupancies where shielding ofcombustibles is extensive.

5.5* Special Occupancy Hazards.

5.6* Commodity Classification.

See Section C.2.

5.6.1 General.

5.6.1.1* Classification of Commodities.

5.6.1.1.1

Commodity classification and the corresponding protection requirements shall be determined based on themakeup of individual storage units (i.e., unit load, pallet load).

5.6.1.1.1.1

The type and amount of materials used as part of the product and its primary packaging as well as thestorage pallet shall be considered in the classification of the commodity.


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5.6.1.1.2

When specific test data of commodity classification by a nationally recognized testing agency are available,the data shall be permitted to be used in determining classification of commodities.

5.6.1.2 Mixed Commodities.

5.6.1.2.1

Protection requirements shall not be based on the overall commodity mix in a fire area.

5.6.1.2.2

Unless the requirements of 5.6.1.2.3 or 5.6.1.2.4 are met, mixed commodity storage shall be protected bythe requirements for the highest classified commodity and storage arrangement.

5.6.1.2.3

The protection requirements for the lower commodity class shall be permitted to be utilized where all of thefollowing are met:

(1) Up to 10 pallet loads of a higher hazard commodity, as described in 5.6.3 and 5.6.4, shall be

permitted to be present in an area not exceeding 40,000 ft2 (3720 m2).

(2) The higher hazard commodity shall be randomly dispersed with no adjacent loads in any direction(including diagonally).

(3) Where the ceiling protection is based on Class I or Class II commodities, the allowable number ofpallet loads for Class IV or Group A plastics shall be reduced to five.

5.6.1.2.4 Mixed Commodity Segregation.

The protection requirements for the lower commodity class shall be permitted to be utilized in the area oflower commodity class, where the higher hazard material is confined to a designated area and the area isprotected to the higher hazard in accordance with the requirements of this standard.

5.6.2 Pallet Types.

5.6.2.1 General.

When loads are palletized, the use of wood or metal pallets, or listed pallets equivalent to wood, shall beassumed in the classification of commodities.

5.6.2.2* Unreinforced Plastic Pallets.

For Class I through Class IV commodities, when unreinforced polypropylene or unreinforced high-densitypolyethylene plastic pallets are used, the classification of the commodity unit shall be increased one class.

5.6.2.2.1

Unreinforced polypropylene or unreinforced high-density polyethylene plastic pallets shall be marked with apermanent symbol to indicate that the pallet is unreinforced.

5.6.2.3*

For Class I through Class IV commodities, when reinforced polypropylene or reinforced high-densitypolyethylene plastic pallets are used, the classification of the commodity unit shall be increased twoclasses except for Class IV commodity, which shall be increased to a cartoned unexpanded Group Aplastic commodity.

5.6.2.3.1

Pallets shall be assumed to be reinforced if no permanent marking or manufacturer's certification ofnonreinforcement is provided.

5.6.2.4

No increase in the commodity classification shall be required for Group A plastic commodities stored onplastic pallets.

5.6.2.5

For ceiling-only sprinkler protection, the requirements of 5.6.2.2 and 5.6.2.3 shall not apply where plasticpallets are used and where the sprinkler system uses spray sprinklers with a minimum K-factor of K-16.8(240).


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5.6.2.6

The requirements of 5.6.2.2 through 5.6.2.7 shall not apply to nonwood pallets that have demonstrated afire hazard that is equal to or less than wood pallets and are listed as such.

5.6.2.7

For Class I through Class IV commodities stored on plastic pallets when other than wood, metal, orpolypropylene or high-density polyethylene plastic pallets are used, the classification of the commodity unitshall be determined by specific testing conducted by a national testing laboratory or shall be increased twoclasses.

5.6.3* Commodity Classes.

5.6.3.1* Class I.

A Class I commodity shall be defined as a noncombustible product that meets one of the following criteria:

(1) Placed directly on wood pallets

(2) Placed in single-layer corrugated cartons, with or without single-thickness cardboard dividers, with orwithout pallets

(3) Shrink-wrapped or paper-wrapped as a unit load with or without pallets

5.6.3.2* Class II.

A Class II commodity shall be defined as a noncombustible product that is in slatted wooden crates, solidwood boxes, multiple-layered corrugated cartons, or equivalent combustible packaging material, with orwithout pallets.

5.6.3.3* Class III.

5.6.3.3.1

A Class III commodity shall be defined as a product fashioned from wood, paper, natural fibers, or Group Cplastics with or without cartons, boxes, or crates and with or without pallets.

5.6.3.3.2*

A Class III commodity shall be permitted to contain a limited amount (5 percent or less by weight ofunexpanded plastic or 5 percent or less by volume of expanded plastic) of Group A or Group B plastics.


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5.6.3.3.3

Class III commodities containing a mix of both Group A expanded and unexpanded plastics shall complywith Figure 5.6.3.3.3(a) where they are within cartons, boxes, or crates or with Figure 5.6.3.3.3(b) wherethey are exposed.

Figure 5.6.3.3.3(a) Commodities Containing a Mixture of Expanded and Unexpanded Group APlastics.

Figure 5.6.3.3.3(b) Exposed Commodities Containing a Mixture of Expanded and UnexpandedGroup A Plastics.

5.6.3.4* Class IV.


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5.6.3.4.1

A Class IV commodity shall be defined as a product, with or without pallets, that meets one of the followingcriteria:

(1) Constructed partially or totally of Group B plastics


(3) Cartoned, or within a wooden container, that contains greater than 5 percent and up to 15 percent byweight of Group A unexpanded plastic

(4) Cartoned, or within a wooden container, that contains greater than 5 percent and up to 25 percent byvolume of expanded Group A plastics

(5) Cartoned, or within a wooden container, that contains a mix of Group A expanded and unexpandedplastics and complies with Figure 5.6.3.3.3(a)

(6) Exposed, that contains greater than 5 percent and up to 15 percent by weight of Group A unexpandedplastic

(7) Exposed, that contains a mix of Group A expanded and unexpanded plastics and complies withFigure 5.6.3.3.3(b)

5.6.3.4.2

The remaining materials shall be permitted to be metal, wood, paper, natural or synthetic fibers, or Group Bor Group C plastics.

5.6.4* Classification of Plastics, Elastomers, and Rubber.

Plastics, elastomers, and rubber shall be classified as Group A, Group B, or Group C.

5.6.4.1* Group A.


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The following materials shall be classified as Group A:

(1) ABS (acrylonitrile-butadiene-styrene copolymer)


(3) Acrylic (polymethyl methacrylate)

(4) Butyl rubber

(5) Cellulosics (cellulose acetate, cellulose acetate butyrate, ethyl cellulose)

(6) EPDM (ethylene-propylene rubber)

(7) FRP (fiberglass-reinforced polyester)

(8) Natural rubber

(9) Nitrile-rubber (acrylonitrile-butadiene-rubber)

(10) Nylon (nylon 6, nylon 6/6)

(11) PET (thermoplastic polyester)

(12) Polybutadiene

(13) Polycarbonate


(15) Polyethylene

(16) Polypropylene

(17) Polystyrene

(18) Polyurethane

(19) PVC (polyvinyl chloride — highly plasticized, with plasticizer content greater than 20 percent) (rarelyfound)




5.6.4.1.1*

Group A plastics shall be further subdivided as either expanded or unexpanded.

5.6.4.1.1.1

A Group A expanded plastic commodity shall be defined as a product, with or without pallets, that meetsone of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 40 percent by volume of Group Aexpanded plastic

(2) Exposed, that contains greater than 25 percent by volume of Group A expanded plastic


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5.6.4.1.1.2

A Group A unexpanded plastic commodity shall be defined as a product, with or without pallets, that meetsone of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 15 percent by weight of Group Aunexpanded plastic

(2) Cartoned, or within a wooden container, that contains greater than 25 percent and up to 40 percent byvolume of Group A expanded plastic

(3) Cartoned, or within a wooden container, that contains a mix of Group A unexpanded and expandedplastics, in compliance with Figure 5.6.3.3.3(a)

(4) Exposed, that contains greater than 15 percent by weight of Group A unexpanded plastic

(5) Exposed, that contains greater than 5 percent and up to 25 percent by volume of Group A expandedplastic

(6) Exposed, that contains a mix of Group A unexpanded and expanded plastics, in compliance withFigure 5.6.3.3.3(b)

5.6.4.1.1.3

The remaining materials shall be permitted to be noncombustible, wood, paper, natural or synthetic fibers,or Group A, Group B, or Group C plastics.

5.6.4.2 Group B.

The following materials shall be classified as Group B:

(1) Chloroprene rubber

(2) Fluoroplastics (ECTFE — ethylene-chlorotrifluoro-ethylene copolymer; ETFE — ethylene-tetrafluoroethylene-copolymer; FEP — fluorinated ethylene-propylene copolymer)

(3) Silicone rubber

5.6.4.3 Group C.


(1) Fluoroplastics (PCTFE — polychlorotrifluoroethylene; PTFE — polytetrafluoroethylene)

(2) Melamine (melamine formaldehyde)

(3) Phenolic

(4) PVC (polyvinyl chloride — flexible — PVCs with plasticizer content up to 20 percent)

(5) PVDC (polyvinylidene chloride)

(6) PVDF (polyvinylidene fluoride)

(7) Urea (urea formaldehyde)

5.6.5* Classification of Rolled Paper Storage.

For the purposes of this standard, the classifications of paper described in 5.6.5.1 through 5.6.5.4 shallapply and shall be used to determine the sprinkler system design criteria.

5.6.5.1 Heavyweight Class.

Heavyweight class shall be defined so as to include paperboard and paper stock having a basis weight

[weight per 1000 ft2 (92.9 m2)] of 20 lb (9.1 kg).

5.6.5.2 Mediumweight Class.

Mediumweight class shall be defined so as to include all the broad range of papers having a basis weight

[weight per 1000 ft2 (92.9 m2)] of 10 lb to 20 lb (4.5 kg to 9.1 kg).

5.6.5.3 Lightweight Class.

Lightweight class shall be defined so as to include all papers having a basis weight [weight per 1000 ft2

(92.9 m2)] of 10 lb (4.5 kg).


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5.6.5.4 Tissue.

5.6.5.4.1

Tissue shall be defined so as to include the broad range of papers of characteristic gauzy texture, which, insome cases, are fairly transparent.

5.6.5.4.2

For the purposes of this standard, tissue shall be defined as the soft, absorbent type, regardless of basisweight — specifically, crepe wadding and the sanitary class including facial tissue, paper napkins, bathroomtissue, and toweling.


This brings in the requirements for noncombustible material and limited combustible material from NFPA 5000, as an extract. The same requirements are also included in NFPA 101, in sections 4.6.13 (noncombustible) and 4.6.14 (limited combustible) and can be extracted from there also. This public input is tied in to eliminating the definitions from chapter 3, as done in most NFPA documents (including NFPA 1, 101, 5000, 90A, and so on). the definitions as they stand now are not in compliance with the NFPA Manual of Style because of containing references to standards and requirements.

Related Public Inputs for This Document

Related Input Relationship




Submitter Full Name: Marcelo Hirschler

Organization: GBH International

Street Address:

City:

State:

Zip:

Submittal Date: Sun Jan 03 20:07:59 EST 2016


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5.3.2.1

Ordinary hazard (Group 2) occupancies shall be defined as occupancies or portions of other occupancieswhere the quantity and combustibility of contents are moderate to high, stockpiles of contents withmoderate rates of heat release do not exceed 12 ft (3.7 m), and stockpiles of contents with high rates ofheat release do not exceed 8 ft (2.4 m). do not exceed the values specified for low piled or miscellaneousstorage that can be protected as ordinary hazard group 2.


There are some items that create high rates of heat release where piles 8 ft high would be inappropriate for OH2 protection. For example, TAble 13.2.1 says that 8 ft high storage of Group A plastics in cartons needs to be protected as EH1 or EH2 depending on the ceiling height. Therefore, it is wrong to say that 8 ft storage of plastics can be treated as OH2 in the definition of OH2.


Submitter Full Name: Kenneth Isman

Organization: University of Maryland

Street Address:

City:

State:

Zip:



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Public Input No. 228-NFPA 13-2016 [ Section No. 5.6 ]

[NOTE TO EDITOR: This PI adds new sections 20.1 and 20.2. In addition, it proposed to move textfrom the existing Section 5.6 * Commodity Classification.

See Section C.2 .

5.6.1 General.

5.6.1.1 * Classification of Commodities.


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into proposed new Sections 20.3, 20.4, and 20.5. The proposed Chapter 20 sections are part of theNFPA 13 reorganization. This PI shows new paragraph numbers in brackets. Within the existingSection 5.6, the new Chapter 20 paragraphs will be out of sequence. Also, this PI includes newparagraphs to be added in the proposed Sections 20.3, 20.4, and 20.5 that do not currently exist inNFPA 13. Finally, PI notes have been inserted to indicate the location of other paragraphs (outsideof Chapter 5) where PI's have been submitted to bring existing paragraphs into the proposedSections 20.3, 20.4, and 20.5.]

[NEW 20.1]

This chapter shall provide the necessary steps for identifying commodity, storage arrangements, storageheights and clearances as well as general protection criteria for storage conditions relative to Chapters 21to 24

[NEW 20.1.1]

Miscellaneous and Low Piled storage, meeting the criteria of Chapter 4 shall be protected in accordancewith the relative occupancy hazard criteria reference in that section.

[NEW 20.2]

Protection of storage shall follow the following criteria:

(1) Identify the storage commodity class in accordance with 20.3 and 20.4

(2) Identify the method of storage in accordance with 20.5

(3) Establish storage height, building height and associated clearances in accordance with 20.6

(4) Define the general protection criteria that are common to all storage protection options in accordancewith 20.7 through 20.15

(5) Select an the appropriate system/sprinkler technology for protection criteria (Chapters 21 to 24)

(6) System design and installation in accordance with the remainder of this document

5.6 * [20.3*] Classification of Commodities General.

See Section C.2 .

5.6.1.1.1 [20.3.1*]

Commodity classification and the corresponding protection requirements shall be determined based onthe makeup of individual storage units

(i.e.

,

unit load, pallet load)

pallet load, or module held together in some manner abd normally transported by material-handlingequipment .

5.6.1.1.1.1

[20.3.1.1]

The type and amount of materials used as part of the product and its primary packaging as well as thestorage pallet shall be considered in the classification of the commodity.

5.6.1.1.2 [20.3.1.2]

When specific test data of commodity classification by a nationally recognized testing agency areavailable, the data shall be permitted to be used in determining classification of commodities.

5.6.1.2

[20.4.10] Mixed Commodities.

5.6.1.2.1 [20.4.10.1]

Protection requirements shall not be based on the overall commodity mix in a fire area.


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5.6.1.2.2 [20.4.10.2]

Unless the requirements of

5

20 .

6

4 .

1

10 .

2.3 or 5.6.1.2.4 are

3 or 20.4.10.4 are met, mixed commodity storage shall be protected by the requirements for the highestclassified commodity and storage arrangement.

5.6.1.2.3 [20.4.10.3]

The protection requirements for the lower commodity class shall be permitted to be utilized where all of thefollowing are met:

(1) Up to 10 pallet loads of a higher hazard commodity, as described in

5.6.3 and 5.6.

(1) 20. 4 ,

shall

(1) shall be permitted to be present in an area not exceeding 40,000 ft 2 (3720 m 2 ).

(2) The higher hazard commodity shall be randomly dispersed with no adjacent loads in any direction(including diagonally).

(3) Where the ceiling protection is based on Class I or Class II commodities, the allowable number ofpallet loads for Class IV or Group A plastics shall be reduced to five.

5.6.1.2.4 [20.4.10.4] Mixed Commodity Segregation.

The protection requirements for the lower commodity class shall be permitted to be utilized in the area oflower commodity class, where the higher hazard material is confined to a designated area and the area isprotected to the higher hazard in accordance with the requirements of this standard.

5.6.2 [20.3.2] Pallet Types and Commodity Classification .

5.6.2.1 [20.3.2.1] General.

When loads

Where pallets are

palletized,

used, commodity classification in Section 20.4 shall be based upon the use of

wood or metal pallets, or listed pallets equivalent to wood, shall be assumed in the classification ofcommodities.

5.6.2.2 * Unreinforced Plastic Pallets.


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the following types of pallets:

(1) Wood pallets constructed entirely of wood with metal fasteners

(2) Metal pallets

(3) Pallets formed of any material and listed as equivalent to wood pallets

[NEW 20.3.2.2] When loads are palletized using pallet types not included in 20.3.2.1, commoditiesclassified using Section 20.4 shall be adjusted in accordance with Sections 20.3.2.2.1 through 20.3.2.2.3.

[NEW 20.3.2.2.1] Unreinforced Plastic Pallets.

A polypropylene or high-density polyethylene plastic pallet with no secondary reinforcing (such as steel orfiberglass) shall be treated as an unreinforced plastic pallet.

5.6.2.2 * [20.3.2.2.1.2*]

For Class I through Class IV commodities, when unreinforced polypropylene or unreinforced high-densitypolyethylene plastic pallets are used, the classification of the commodity unit shall be increased one class.

5

[NEW 20 .

6

3 .2.2.

1

Unreinforced

2] Reinforced Plastic Pallets.

A reinforced polypropylene or

unreinforced

reinforced high-density polyethylene plastic

pallets shall be marked with a permanent symbol to indicate that the pallet is unreinforced

pallet incorporating a secondary reinforcing material (such as steel or fiberglass) within the pallet shall beconsidered as a reinforced plastic pallet .

5.6.2.3 * [20.3.2.2.2.1*]

For Class I through Class IV commodities, when reinforced polypropylene or reinforced high-densitypolyethylene plastic pallets are used, the classification of the commodity unit shall be increased twoclasses except for Class IV commodity, which shall be increased to a cartoned unexpanded Group Aplastic commodity.

[NEW 20.3.2.2.2.2]

No increase in the commodity classification shall be required for Group A plastic commodities stored onreinforced plastic pallets.

[NEW 20.3.2.2.2.3]

For ceiling-only sprinkler protection, the requirements of 20.3.2.2.2.1 shall not apply where plastic palletsare used and where the sprinkler system uses spray sprinklers with a minimum K-factor of K-16.8 (240).

5.6.2.3.1 [20.3.2.2.1.1]

Pallets

Plastic pallets shall be assumed to be reinforced

if no

unless a permanent marking or manufacturer's certification

of nonreinforcement

is provided to confirm the pallet is unreinforced .


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5.6.2.4 [20.3.2.2.1.3]

No increase in the commodity classification shall be required for Group A plastic commodities stored onplastic pallets.

5.6.2.5 [20.3.2.2.1.4]

For ceiling-only sprinkler protection, the

requirements

requirement of

5

[20 .

6

3 .2.2

and

.1.2] 5.6.2.

3 shall

2 shall not apply where plastic pallets are used and where the sprinkler system uses spray sprinklers witha minimum K-factor of K-16.8 (240).

5.6.2.

6

The requirements of 5.6

7 [20.3 .2.2

through 5.6.2.7 shall not apply to nonwood pallets that have demonstrated a fire hazard that is equal toor less than wood pallets and are listed as such.

5.6.2.7

.3] Other Pallets.

For Class I through Class IV commodities stored on plastic pallets

when

other than

wood, metal, or polypropylene or high-density polyethylene plastic pallets are used,

those addressed in sections 20.3.1 or 20.3.2 the classification of the commodity unit shall be determinedby specific testing conducted by a national testing laboratory or shall be increased two classes.

[ NEW 20.3.2.3 Open-Top Containers ]

A container of any shape that is entirely or partially open on the top and arranged so as to allow for thecollection of discharging sprinkler water cascading through the storage array shall be considered outsidethe protection criteria of rack storage protection outlined in Chapter 21 through 24.

5.6.3 * [20.4*] Commodity Classes.

5.6.3.1 *

[20.4.1*] Class I.

A Class I commodity shall be defined as a noncombustible product that meets one of the following criteria:

(1) Placed directly on wood pallets

(2) Placed in single-layer corrugated cartons, with or without single-thickness cardboard dividers, with orwithout pallets

(3) Shrink-wrapped or paper-wrapped as a unit load with or without pallets


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5.6.3.2 * [20.4.2*] Class II.

A Class II commodity shall be defined as a noncombustible product that is in slatted wooden crates, solidwood boxes, multiple-layered corrugated cartons, or equivalent combustible packaging material, with orwithout pallets.

5.6.3.3 *

[20.4.3*] Class III.

5.6.3.3.1 [20.4.3.1]

A Class III commodity shall be defined as a product

fashioned from

, with or without pallets, that meets one of the following criteria:

(1) Constructed partially or totally of wood, paper, natural fibers, or Group C plastics with or withoutcartons, boxes, or crates

and with or without pallets.

5.6.3.3.2 *

A Class III commodity shall be permitted to contain(2) Commodity containing a limited amount (

5 percent5 percent or less by weight of unexpanded plastic or

5 percent5 percent or less by volume of expanded plastic) of Group A or

GroupB plastics

.

5.6.3.3.3

Class III commodities containing a mix of both Group A expanded and unexpanded plastics shall complywith Figure 5.6.3.3.3(a) where they are within cartons, boxes, or crates or with Figure 5.6.3.3.3(b) wherethey are exposed.with the remaining material being wood, paper, natural fibers, or Group C plastics with or without cartons,boxes, or crates.

(3)* Cartoned commodity that includes Group A plastics and complies as a Class III commodity per20.4.6.1.

(4)* Exposed commodity that includes Group A plastics and complies as a Class III commodity per20.4.6.2.

[NEW 20.4.3.2]

Class III commodity does not include paper in the form of roll paper. See 20.4.8 for guidance on theclassification of roll paper.

[NEW 20.4.3.3]

Class III commodity does not include cotton fibers stored in bales. See 20.4.9 for guidance on theclassification of baled cotton.

[NEW 20.4.6] Classification of Commodities that Include Group A Plastics.


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[NEW 20.4.6.1 ]

Where a portion of a cartoned commodity is a Group A plastic, the commodity class will bebased upon Figure 20.4.6.1

[PI NOTE: See artwork for the following two figures submitted separately.]

Figure 5.6.3.3.3(a)

Commodities

[Figure 20.4.6.1] Cartoned Commodities Containing a Mixture of Expanded and UnexpandedGroup A Plastics.

[NEW 20.4.6.2]

Where a portion of an exposed commodity is Group A plastic, the commodity classwill be based upon Figure 20.4.6.2

Figure 5.6.3.3.3(b)

Exposed

[Figure 20.4.6.2] Exposed Commodities Containing a Mixture of Expanded and UnexpandedGroup A Plastics.

5.6.3.4 * [20.4.4*] Class IV.


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5.6.3.4.1 [20.4.4.1]

Exposed, that contains

A Class IV commodity shall be defined as a product, with or without pallets, that meets one of the followingcriteria:

(1) Constructed partially or totally of Group B plastics with the remaining material being wood, paper,

natural fibers, synthe c fibers, or Group C plas cs with or without cartons, boxes, or crates.


(3) Cartoned, or within a wooden container, that contains greater than 5 percent and up to 15 percent byweight of Group A unexpanded plastic

Cartoned, or within a wooden container, that contains greater than 5 percent and up to 25 percent byvolume of expanded Group A plastics

Cartoned, or within a wooden container, that contains a mix of Group A expanded and unexpandedplastics and complies with Figure 5.6.3.3.3(a)

Exposed, that contains greater than 5 percent and up to 15 percent by weight of Group A unexpandedplastic

(1) Cartoned commodity that includes Group A plastics and complies as a Class IV commodity per20.4.6.1.

(2) Exposed commodity that includes Group A plas cs and complies as a Class IV commodity per 20.4.6.2.

(3) Exposed, that contains a mix of Group A expanded and unexpanded plastics and complies withFigure 5.6.3.3.3(b)

5.6.

3

4 * [20 .4.

2

The remaining materials shall be permitted to be metal, wood, paper, natural or synthetic fibers, or Group Bor Group C plastics.

5

.6.4

* ] Classification of Plastics, Elastomers, and Rubber.

Plastics, elastomers, and rubber shall be classified as Group A, Group B, or Group C.

5.6.4.1 *

[20.4.5.1*] Group A.


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The following materials shall be classified as Group A:

(1) ABS (acrylonitrile-butadiene-styrene copolymer)


(3) Acrylic (polymethyl methacrylate)

(4) Butyl rubber

(5) Cellulosics (cellulose acetate, cellulose acetate butyrate, ethyl cellulose)

(6) EPDM (ethylene-propylene rubber)

(7) FRP (fiberglass-reinforced polyester)

(8) Natural rubber

(9) Nitrile-rubber (acrylonitrile-butadiene-rubber)

(10) Nylon (nylon 6, nylon 6/6)

(11) PET (thermoplastic polyester)

(12) Polybutadiene

(13) Polycarbonate


(15) Polyethylene

(16) Polypropylene

(17) Polystyrene

(18) Polyurethane

(19) PVC (polyvinyl chloride — highly plasticized, with plasticizer content greater than 20 percent) (rarelyfound)




5.6.4.1.1 * [20.4.5.1.2*]

Group A plastics shall be further subdivided as either expanded or unexpanded.

5

[NEW 20 .

6.

4.

1

5 .1.

1 5.6.4.1.1.3

3]

A Group A expanded plastic commodity shall be defined as a product, with or without pallets, that meetsone of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 40 percent by volume of Group Aexpanded plastic

(2) Exposed, that contains greater than 25 percent by volume of Group A expanded plastic


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5.6.4.1.1.2

A Group A unexpanded plastic commodity shall be defined as a product, with or without pallets, that meetsone of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 15 percent by weight of Group Aunexpanded plastic

(2) Cartoned, or within a wooden container, that contains greater than 25 percent and up to 40 percentby volume of Group A expanded plastic

(3) Cartoned, or within a wooden container, that contains a mix of Group A unexpanded and expandedplastics, in compliance with Figure 5.6.3.3.3(a)

(4) Exposed, that contains greater than 15 percent by weight of Group A unexpanded plastic

(5) Exposed, that contains greater than 5 percent and up to 25 percent by volume of Group A expandedplastic

(6) Exposed, that contains a mix of Group A unexpanded and expanded plastics, in compliance withFigure 5.6.3.3.3(b)


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Group A plastics do not include rubber formed into tires. See 20.4.7 for guidance on the classification ofrubber tires.

5.6.4.1.1.3 [20.4.5.1.4]

The remaining materials shall be permitted to be noncombustible, wood, paper, natural or synthetic fibers,or Group A, Group B, or Group C plastics.

5.6.4.2 [20.4.5.2] Group B.

The following materials shall be classified as Group B:

(1) Chloroprene rubber

(2) Fluoroplastics (ECTFE — ethylene-chlorotrifluoro-ethylene copolymer; ETFE — ethylene-tetrafluoroethylene-copolymer; FEP — fluorinated ethylene-propylene copolymer)

(3) Silicone rubber

5.6.4.3 [20.4.5.3] Group C.


(1) Fluoroplastics (PCTFE — polychlorotrifluoroethylene; PTFE — polytetrafluoroethylene)

(2) Melamine (melamine formaldehyde)

(3) Phenolic

(4) PVC (polyvinyl chloride — flexible — PVCs with plasticizer content up to 20 percent)

(5) PVDC (polyvinylidene chloride)

(6) PVDF (polyvinylidene fluoride)

(7) Urea (urea formaldehyde)

[NEW 20.4.7] Rubber Tires

A commodity class that shall include a range of pneumatic tires for passenger automobiles, aircraft, lightand heavy trucks, trailers, farm equipment, construction equipment (off-the-road), and buses, shall beprotected Protect as rubber tire storage in accordance with Chapters 20 through 24.

5.6.5 * [20.4.8*] Classification of

Rolled

Roll Paper Storage.

For the purposes of this standard, the classifications of paper described in

5

20 .

6

4 .

5.1 through 5.6.5.4 shall

8.1 through 20.4.8.4 shall apply and shall be used to determine the sprinkler system design criteria.

5.6.5.1 [20.4.8.1] Heavyweight Class.

Heavyweight class shall be defined so as to include paperboard and paper stock having a basis weight

[weight per 1000 ft 2 (92.9 m 2 )] of 20 lb (9.1 kg).

5.6.5.2 [20.4.8.2] Mediumweight Class.

Mediumweight class shall be defined so as to include all the broad range of papers having a basis weight

[weight per 1000 ft 2 (92.9 m 2 )] of 10 lb to 20 lb (4.5 kg to 9.1 kg).

5.6.5.3


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[20.4.8.3] Lightweight Class.

Lightweight class shall be defined so as to include all papers having a basis weight [weight per 1000 ft 2

(92.9 m 2 )] of 10 lb (4.5 kg).

5.6.5.4 [20.4.8.4] Tissue.

5.6.5.4.1 [20.4.8.4.1]

Tissue shall be defined so as to include the broad range of papers of characteristic gauzy texture, which,in some cases, are fairly transparent.


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5.6.5.4.2 [20.4.8.4.2]


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For the purposes of this standard, tissue shall be defined as the soft, absorbent type, regardless of basisweight — specifically, crepe wadding and the sanitary class including facial tissue, paper napkins,bathroom tissue, and toweling.

[NEW 20.4.8.5] Wrapping and Capping of Roll Paper

[PI Note: See separate PI to move existing 19.1.1.4 to new 20.4.8.5.1]

[PI Note: See separate PI to move existing 19.1.1.5 to new 20.4.8.5.2]

[NEW 20.4.9*] Baled Cotton.

A natural seed fiber wrapped and secured in industry-accepted materials, usually consisting of burlap,woven polypropylene, or sheet polyethylene, and secured with steel, synthetic or wire bands, or wire; alsoincludes linters (lint removed from the cottonseed) and motes (residual materials from the ginningprocess)shall be protected as baled cotton in accordance with Chapter 21 (See Table A.3.9.6.1.)

[NEW 20.5] Storage Arrangement

[NEW 20.5.1] General.

Storage arrangements defined in this section shall be used to select the appropriate protection criteria inChapters 21 through 24.

[NEW 20.5.1.1 ]

Other storage arrangements not covered by this section shall be considered outside the scope of thisstandard.

[NEW 20.5.2 Palletized Storage.

On floor storage of commodities on pallets or other storage aids that form horizontal spaces between tiersof storage shall be considered as palletized storage.

[NEW 20.5.2.1 Closed Array.

When the vertical flues between pallet loads are 6 in (152mm) or less, the arrangement shall beconsidered closed array.

[NEW 20.5.2.2*] Open Array.

When the vertical flues between pallet loads are greater than 6 in (152mm), the arrangement shall beconsidered open array.

[NEW 20.5.2.3*] Pile Stability, Stable Piles.

Those arrays where collapse, spillage of content, or leaning of stacks across flue spaces is not likely tooccur soon after initial fire development shall be considered as stable piles.

[NEW 20.5.2.4*] Pile Stability, Unstable Piles.

Those arrays where collapse, spillage of contents, or leaning of stacks across flue spaces occurs soonafter initial fire development shall be considered as unstable piles.

[NEW 20.5.3] Solid-Piled Storage.

Storage of commodities stacked on each other shall be considered as solid piled storage.

[NEW 20.5.3.1] Closed Array.

When solid piled storage has vertical flues between the piles of 6 in (152mm) or less, the storagearrangement shall be considered as closed array.

[NEW 20.5.3.2*] Open Array.

When solid piled storage has vertical flues between the piles of greater than 6 in (152mm), the storagearrangement shall be considered as open array.

[NEW 20.5.3.3*] Pile Stability, Stable Piles.

Those arrays where collapse, spillage of content, or leaning of stacks across flue spaces is not likely tooccur soon after initial fire development shall be considered as stable piles.

[NEW 20.5.3.4*] Pile Stability, Unstable Piles.

Those arrays where collapse, spillage of contents, or leaning of stacks across flue spaces occurs soonafter initial fire development shall be considered as unstable piles.

[NEW 20.5.4] Bin Box Storage.


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Storage in five-sided wood, metal, or cardboard boxes with open face on the aisles in which boxes areself-supporting or supported by a structure so designed that little or no horizontal or vertical space existsaround boxes shall be considered as bin box storage.

[NEW 20.5.5*] Shelf Storage.

Storage on structures up to and including 30 in. (0.76 m) deep and separated by aisles at least 30 in. (0.76m) wide shall be considered as shelf storage.

[NEW 20.5.6*] Back-to-Back Shelf Storage.

Two solid or perforated shelves up to 30 in. (0.76 m) in depth each, not exceeding a total depth of 60 in.(1.52 m), separated by a longitudinal vertical barrier such as plywood, particleboard, sheet metal, orequivalent, with a maximum 0.25 in. (6.4 mm) diameter penetrations and no longitudinal flue space and amaximum storage height of 15 ft (4.57 m) shall be considered as back to back storage.

[NEW 20.5.7*] Rack

Rack storage shall include any combination of vertical, horizontal, and diagonal members that supportsstored materials in accordance with 20.5.7.

[NEW 20.5.7.1] Open Rack.

[NEW 20.5.7.1.1] Open Single-Row Rack. A rack that shall have:

(1) A shelf area not exceeding 20 ft2 (1.9 m2)

(2) Nominal 6 in (150 mm) wide transverse flues spaces between shelf areas

[NEW 20.5.7.1.2] Open Double-Row Rack. A rack that shall have:

(1) A shelf area not exceeding 20 ft2 (1.9 m2)

(2) Nominal 6 in (150 mm) wide transverse flues spaces between shelf areas

(3) Nominal 6 in (150 mm) wide longitudinal flue spaces between shelf areas unless 20.5.7.1.2.1 applies

[NEW 20.5.7.1.2.1] When double-row rack are not required to have longitudinal flues, the shelf areasthat would normally be separated by the longitudinal flue shall be permitted to form a shelf area up to 40ft2 (3.8 m2).

[NEW 20.5.7.1.3] Open Multiple-Row Rack. A rack that shall have:

(1) Shevles that are not more than 5 ft (1.5 m) wide between transverse flue spaces

(2) Nominal 6 in (150 mm) wide transverse flues spaces separated by shelf areas

[NEW 20.5.7.1.4] Open Rack Flue Obstructions. Transverse and longitudinal flues required in openracks shall be permitted to be obstucted by shelving material as follows:

(1) Slats spaced to maintain at least a 3 in (75 mm) wide flue space aligned tier-to-tier.

(2) Mesh shelving at least 70% open including the horizontal area of rack members

[NEW 20.5.7.2] Shelving

[NEW 20.5.7.2.1] Rack Shelf Area.

The area of the horizontal surface of a shelf in a rack defined by perimeter aisle(s) or nominal 6 in. (152mm) flue spaces on all four sides, or by the placement of loads that block openings that would otherwiseserve as the required flue spaces shall be considered to determine the rack shelf area.

[PI Note: See separate PI for 16.1.6.3 for 20.5.7.2.4.2]

[NEW 20.5.7.3] Aisles.

[NEW 20.5.7.3.1*] Aisles required by Chapters 21 through 24 shall not be obstructed unless Chapters 21through 24 include specific guidance allowing aisle obstructions.

[NEW 20.5.7.3.2*] Aisle Width.

The horizontal dimension between the face of the loads in racks under consideration shall determine theaisle width for protection criteria.

[NEW 20.5.7.4] Flues

[NEW 20.5.7.4.1] Longitudinal Flue Space.

The space between rows of storage perpendicular to the direction of loading with a width not exceeding


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24 in. (610 mm) between storage shall be considered as the longitudinal flue.


[PI Note: See separate PI for 16.1.11.1.1 for 20.5.7.4.1.2]

[NEW 20.5.7.4.2] Transverse Flue Space.

The space between rows of storage parallel to the direction of loading shall be considered as thetransverse flue. (See Figure A.3.9.3.6.)



[NEW 20.5.7.5] Bulkhead.

A vertical barrier across the rack shall be considered a bulkhead.

[NEW 20.5.7.6] Horizontal Barrier.

A solid barrier in the horizontal position covering the entire rack, including all flue spaces, unless otherwisepermitted in this standard, at certain height increments, to prevent vertical fire spread shall be considereda horizontal barrier.

[NEW 20.5.7.7*] Single-Row Racks.

Racks that have no longitudinal flue space and that have a depth up to 6 ft (1.8 m) with aisles having awidth of at least 3.5 ft (1.1 m) between loads on racks shall be protected as single-row racks.

[NEW 20.5.7.8] Double-Row Racks.

Racks less than or equal to 12 ft (3.7 m) in depth or single-row racks placed back to back having anaggregate depth up to 12 ft (3.7 m), with aisles having an aisle width of at least 3.5 ft (1.1 m) betweenloads on racks shall be protected as double row racks.

[NEW 20.5.7.9] Multiple-Row Racks.

Racks greater than 12 ft (3.7 m) in depth or single- or double-row racks separated by aisles less than 3.5 ft(1.1 m) wide having an overall width greater than 12 ft (3.7 m) shall be protected as multiple row racks.

[NEW 20.5.7.10] Movable Racks.

Racks on fixed rails or guides that can be moved back and forth only in a horizontal, two-dimensionalplane shall be protected as movable racks.

[PI Note: See separate PI for 16.1.3 for 20.5.7.10.1]

[NEW 20.5.7.11] Portable Racks

Racks that are not fixed in place and can be arranged in any number of configurations shall be protectedas portable racks.

[NEW 20.5.7.11.1]

Where protection guidance includes portable racks, provide longitudinal and transverse flues similar tofixed racks unless the protection guidelines specifically allow flues to be omitted.

[NEW 20.5.8] Storage Arrangements for Rubber Tires.

Section 20.5.8.1 through 20.5.8.8 identify the general terms of rubber tire storage which identify whichtype protection criteria that shall be used in Chapter 21 to 24.

[NEW 20.5.8.1] Banded Tires.

When tires are strapped together they shall be protected as banded.

[NEW 20.5.8.2 ] Horizontal Channel.

Any uninterrupted space in excess of 5 ft (1.5 m) in length between horizontal layers of stored tires shallbe considered as the horizontal channel.

[NEW 20.5.8.2.3] Laced Tire Storage.

Tires stored where the sides of the tires overlap, creating a woven or laced appearance shall beprotected as laced tire storage. [See Figure A.3.9.4.9(g).]

[NEW 20.5.8.3.5] On-Side Tire Storage.

Tires stored horizontally or flat shall be protected as on-side storage.

[NEW 20.5.8.4.6] On-Tread Tire Storage.


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Tires stored vertically or on their treads shall be protected as on-tread storage.

[NEW 20.5.8.7] Palletized Tire Storage.

Storage on portable racks of various types utilizing a conventional pallet as a base shall be protected aspalletized storage.

[NEW 20.5.8.8] Pyramid Tire Storage.

On-floor storage in which tires are formed into a pyramid to provide pile stability shall be protected aspyramid storage.

[NEW 20.5.9] Arrays (Paper)

[NEW 20.5.9.1] Column.

A single vertical stack of rolls shall be considered a column.

[NEW 20.5.9.1.1] Closed Array (Paper).

Where a A vertical storage arrangement in which the distances between columns in both directions areshort [not more than 2 in. (50 mm) in one direction and 1 in. (25 mm) in the other], the storage array shallbe protected as closed array.

[NEW 20.5.9.1.2] Open Array (Paper).

Where a A vertical storage arrangement in which the distance between columns in both directions islengthy (all vertical arrays other than closed or standard), the storage array shall be considered as openarray..

[NEW 20.5.9.1.3] Standard Array (Paper).

Where a A vertical storage arrangement in which the distance between columns in one direction isshort [1 in. (25 mm) or less] and is in excess of 2 in. (50 mm) in the other direction, the storage array shallbe protected as a standard array.

[NEW 20.5.9.2] Banded Roll Paper Storage.

Where r R olls provided with a circumferential steel strap [3⁄8 in. (9.5 mm) or wider] at each end of theroll, the rolls shall be protected as banded roll paper.

[NEW 20.5.9.3] Roll Paper Orientation

[NEW 20.5.9.3.1] Core.

The central tube around which paper is wound to form a roll shall be considered as the core.

[NEW 20.5.9.3.2] Horizontal Roll Paper Storage.

Rolls stored with the cores in the horizontal plane (on-side storage) shall be protected as horizontalstorage.

[PI Note: See separate PI for 19.1.1.3 for 20.5. 9.3.2.1]

[NEW 20.5.9.3.3] Vertical Roll Paper Storage.

Rolls stored with the cores in the vertical plane (on-end storage)shall be protected as vertical storage.

[NEW 20.5.11] Baled Cotton Storage Arrangements.

[NEW 20.5.11.1] Untiered Storage.

Cotton bales stored on the floor one bale high shall be protected as untiered storage.

[NEW 20.5.11.2] Tiered Storage.

Cotton bales stored on the floor two or more bales high shall be protected as tiered storage.

[NEW 20.5.13] Cartoned Record Storage

Section 20.5.13.1 through 20.5.13.2 identify the general terms of cartoned record storage which identifywhich type of rack and shelving criteria that shall be used in Chapter 21 to 24.

[NEW 20.5.13.1*] Cartoned Records Storage

The protection criteria in Chapter 21 for Cartoned Records Storage shall be based on a Class IIIcommodity consisting predominantly of paper records in cardboard cartons.

[NEW 20.5.13.2] Catwalk.

For the purposes of cartoned records storage, a storage aid consisting of either open metal grating orsolid horizontal barriers supported from a rack storage system that is utilized as a walkway for access to


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storage at elevated levels. Catwalks are accessed using stairs and are not separate floors of a building.



Public_Input_No_228-NFPA_13-2016_modified_artwork.docx

Artwork for revised Figure 5.6.3.3.3(a) [Figure 20.4.6.1] and Figure 5.6.3.3.3(b) [Figure 20.4.6.2].


This changes offered are in support of the NFPA 13 reorganization. In general the changes are not intended to introduce technical changes to the standard. However, technical changes are included as follows:

Section 20.5.7.1 Open Racks. Text offered as part of the reorganization, but also to clarify intent.

Section 20.5.7.3 (Rack storage aisles) where a paragraph has been added to requires aisles to be kept clear of obstructions unless specific guidance in the storage chapters permit obstructions. Specific obstructions that may be introduced into a rack storage aisles are open grate or solid walkways. Full-scale fire tests forming the basis of NFPA 13 guidance typically do not include the presence of such walkways. Such walkways should be considered outside the scope of NFPA 13 unless the configuration has been tested.

Paragraph 20.5.7.6 (Horizontal Barriers) to clarify new text for reorganization to clarify intent regarding barriers at rack uprights.


Submitter Full Name: Richard Gallagher

Organization: Zurich Services Corporation

Street Address:

City:

State:

Zip:

Submittal Date: Wed Jun 22 16:23:08 EDT 2016


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Public Input No. 228‐NFPA 13‐2016 Note to editor: See changes in red.

FIGURE 20.4.6.1 5.6.3.3.3(a) Cartoned Commodities Containing a Mixture of Expanded and Unexpanded Group A Plastics.

FIGURE 20.4.6.2 5.6.3.3.3(b) Exposed Commodities Containing a Mixture of Expanded and Unexpanded Group A Plastics.

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Public Input No. 396-NFPA 13-2016 [ New Section after 11.1.5.3 ]

11.1.5.3.1

Pumps shall not be required to serve standpipe demand where the standpipe is a manual standpipe.


This is a clarification that if there is a combination manual standpipe sprinkler system downstream of the pump, the standpipe demand is not required to be provided.


Submitter Full Name: Peter Schwab

Organization: Wayne Automatic Fire Sprinkler

Street Address:

City:

State:

Zip:

Submittal Date: Mon Jun 27 11:32:38 EDT 2016


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Public Input No. 593-NFPA 13-2016 [ Section No. 11.1.7 ]

11.1.7* High Volume Low Speed (HVLS) Fans.

The installation of HVLS fans in buildings equipped with sprinklers, including ESFR sprinklers, shall complywith the following:

(1) The maximum fan diameter shall be 24 ft (7.3 m).

(2) The HVLS fan shall be centered approximately between four adjacent sprinklers.

(3) The vertical clearance from the HVLS fan to sprinkler deflector shall be a minimum of 3 ft (0.9 mm).

(4) All HVLS fans shall be interlocked to shut down immediately upon receiving a waterflow signal fromthe alarm system in upon a waterflow alarm. Where the building is protected with a fire alarm system,this interlock shall be in accordance with the requirements of NFPA 72.


The standard does not necessarily require a fire alarm system for a building. The text needs to be modified to allow cases where a fire alarm system is not required.


Submitter Full Name: John Denhardt

Organization: Strickland Fire Protection In

Affilliation: American Fire Sprinkler Association

Street Address:

City:

State:

Zip:



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11.1.7 * High Volume Low Speed (HVLS) Fans.




(3) The vertical clearance from the HVLS fan to sprinkler deflector shall be a minimum of 3 ft (0.9 mm).

(4) All HVLS fans shall be interlocked to shut down immediately upon receiving a waterflow signal fromthe alarm system in accordance with the requirements of NFPA 72 .


This provision is placed in the "Design Approaches" chapter yet there is no design related information. Furthermore, as written this would seem to apply to any occupancy yet the testing performed under the National Fire Protection Research Foundation project only addressed storage scenarios. If the committee intent is for this to apply to all storage occupancies, adding a related section to chapter 13 would accomplish that without creating the impression that this requirement applies to non-storage occupancies.

If the committee does intend that these provisions apply to all occupancies they should be relocated to a more appropriate location in the standard. However, the testing program to date would not seem to justify such a position.



Public Input No. 72-NFPA 13-2016 [New Section after 13.3]


Submitter Full Name: Chris Born

Organization: Clark Nexsen Inc

Street Address:

City:

State:

Zip:

Submittal Date: Thu Mar 10 11:46:13 EST 2016


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psi bar gpm L/min Light hazard 15 1 500–750 1900-2850 30–60 Ordinaryhazard 20 1.4 850–1500 3200-5700 60–90

11.2.2.2

Pressure and flow requirements for extra hazard occupancies shall be based on the hydraulic calculationmethods of 11.2.

11.2.2 Water Demand Requirements — Pipe Schedule Method .

11.2.2.1

Table 11.2.2.1 shall be used in determining the minimum water supply requirements for light and ordinaryhazard occupancies protected by systems with pipe sized according to the pipe schedules ofSection 23.7 .

Table 11.2.2.1 Water Supply Requirements for Pipe Schedule Sprinkler Systems

Occupancy Classification Minimum Residual Pressure Required Acceptable Flow at Base of Riser(Including Hose Stream Allowance) Duration (minutes)

3

.

11.2.2.3

The pipe schedule method shall be permitted as follows:

(1) Additions or modifications to existing pipe schedule systems sized according to the pipe schedules ofSection 23.7

(2) Additions or modifications to existing extra hazard pipe schedule systems

(3) New systems of 5000 ft 2 (465 m 2 ) or less

(4) New systems exceeding 5000 ft 2 (465 m 2 ) where the flows required in Table 11.2.2.1 areavailable at a minimum residual pressure of 50 psi (3.4 bar) at the highest elevation of sprinkler

11.2.2.4

Table 11.2.2.1 shall be used in determining the minimum water supply requirements.

11.2.2.5

The lower duration value of Table 11.2.2.1 shall be acceptable only where the sprinkler system waterflowalarm device(s) and supervisory device(s) are electrically supervised and such supervision is monitored atan approved, constantly attended location.

11.2.2.6 * Residual Pressure.

11.2.2.6.1

The residual pressure requirement of Table 11.2.2.1 shall be met at the elevation of the highest sprinkler.

11.2.2.6.2 Friction Loss Due to Backflow Prevention Valves.

11.2.2.6.2.1

When backflow prevention valves are installed on pipe schedule systems, the friction losses of the deviceshall be accounted for when determining acceptable residual pressure at the top level of sprinklers.

11.2.2.6.2.2

The friction loss of this device [in psi (bar)] shall be added to the elevation loss and the residual pressure atthe top row of sprinklers to determine the total pressure needed at the water supply.


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11.2.2.7

The lower flow figure of Table 11.2.2.1 shall be permitted only where the building is of noncombustibleconstruction or the potential areas of fire are limited by building size or compartmentation such that no

open areas exceed 3000 ft 2 (280 m 2 ) for light hazard or 4000 ft 2 (370 m 2 ) for ordinary hazard.


Hydraulically calculated systems have proved to be economical and effective for many years. Sufficient time has passed, and existing technology and software has been proved effective to obviate the need for pipe schedules for new systems of any size.FURTHER ACTION: Retain 11.2.2.3(1) and 11.2.2.3(2) and reassign to 2019 reorganization in Chapter 28 Existing Systems. This should be assigned to the Discharge Committee for discussion and rewrite as necessary.


Submitter Full Name: Michael Friedman

Organization: Friedman Consulting, Inc.

Street Address:

City:

State:

Zip:



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Public Input No. 167-NFPA 13-2016 [ Section No. 11.2.3.1.1 ]

11.2.3.1.1

The water demand for sprinklers shall be determined only from one of the following, at the discretion of thedesigner:

(1) Density/area curves of Figure 11.2.3.1.1 in accordance with the density/area method of 11.2.3.2

(2) The room that creates the greatest demand in accordance with the room design method of 11.2.3.3

(3) Special design areas in accordance with 11.2.3.4

Modify Figure 11.2.3.1.1 below by terminating the five density/area curves to stop at 3,000 sq. ft.

Figure 11.2.3.1.1 Density/Area Curves.


The 3,000 sq. ft. area would then correlate and be consistent with the curves in the storage chapters Figure 13.2.1 and those in Chapters 14 and 16.FURTHER ACTION: The Figure would need to be correctly assigned to the 2019 reorganization in Chapter 19.




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Public Input No. 153-NFPA 13-2016 [ New Section after 11.2.3.1.5.2 ]

(11) Cavities within unsprinklered wall spaces.


In a building with wood frame construction, the wall cavities created when wall material is attached to wooden studs has never been sprinklered. Typically, users point to section 8.15.1.2.3 to allow the omission of sprinklers. Likewise, the user should not be kicked into a 3000 sq ft design area because the space bounded by the walls and the wood studs within a wall is not sprinklered, yet the standard does not explicitly have this exception. So, I am proposing it. Rather than propose an exception for all uses of 8.15.1.2.3, I am just proposing the exception to the 3000 sq ft rule for wall cavities.




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Public Input No. 23-NFPA 13-2016 [ Section No. 11.2.3.1.5.2 ]

11.2.3.1.5.2

The following unsprinklered concealed spaces shall not require a minimum area of sprinkler operation of

3000 ft2 (280 m2):

(1) Noncombustible and limited-combustible concealed spaces with minimal combustible loading havingno access. The space shall be considered a concealed space even with small openings such as thoseused as return air for a plenum.

(2) Noncombustible and limited-combustible concealed spaces with limited access and not permittingoccupancy or storage of combustibles. The space shall be considered a concealed space even withsmall openings such as those used as return air for a plenum.

(3) Combustible concealed spaces filled entirely with noncombustible insulation.

(4)

(5) Concealed spaces where rigid materials are used and the exposed surfaces comply with one of thefollowing in the form in which they are installed in the space: (a) the surface materials have a flamespread index of 25 or less and the materials have been demonstrated to not propagate fire more than10.5 ft (3.2 m) when tested in accordance with ASTM E84, Standard Test Method for Surface BurningCharacteristics of Building Materials, or ANSI/UL 723, Standard for Test for Surface BurningCharacteristics of Building Materials, extended for an additional 20 minutes in the form in which theyare installed in the space or (b) the surface materials comply with the requirements of ASTM E2768,Standard Test Method for Extended Duration Surface Burning Characteristics of Building Materials (30min Tunnel Test) .

(6) Concealed spaces in which the exposed materials are constructed entirely of fire-retardant-treatedwood as defined by NFPA 703.

(7) Concealed spaces over isolated small rooms not exceeding 55 ft2 (5.1 m2) in area.

(8) Vertical pipe chases under 10 ft2 (0.9 m2), provided that in multifloor buildings the chases arefirestopped at each floor using materials equivalent to the floor construction, and where such pipechases contain no sources of ignition, piping shall be noncombustible, and pipe penetrations at eachfloor shall be properly sealed.

(9) Exterior columns under 10 ft2 (0.9 m2) in area formed by studs or wood joists, supporting exteriorcanopies that are fully protected with a sprinkler system.

(10)


This is the same rationale as PI # 22 on section 8.15.1.2.10: complying with ASTM E2768 is the same as complying with the extended ASTM E84 test.


* Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings aredirectly attached to the bottom of solid wood joists or solid limited-combustible construction or

noncombustible construction so as to create enclosed joist spaces 160 ft3 (4.5 m3) or less in volume,including space below insulation that is laid directly on top or within the ceiling joists in an otherwisesprinklered concealed space.

* Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings areattached to the bottom of composite wood joists either directly or on to metal channels not exceeding1 in. (25 mm) in depth, provided the adjacent joist channels are firestopped into volumes not exceeding

160 ft3 (4.5 m3) using materials equivalent to 1⁄2 in. (13 mm) gypsum board, and at least 3 1⁄2 in.(90 mm) of batt insulation is installed at the bottom of the joist channels when the ceiling is attachedutilizing metal channels.


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Public Input No. 22-NFPA 13-2016 [Section No. 8.15.1.2.10]


Submitter Full Name: Marcelo Hirschler

Organization: GBH International

Street Address:

City:

State:

Zip:

Submittal Date: Wed Jan 06 18:15:14 EST 2016


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Public Input No. 573-NFPA 13-2016 [ New Section after 11.3 ]

NONSTORAGE OCCUPANCIES WITH HIGH CEILINGS

11.3.5 NONSTORAGE OCCUPANCIES WITH HIGH CEILINGS

11.3.5.1 Light and Ordinary Hazard Group 1 and 2 Occupancies with ceiling heights between 25 and 50feet. Light and Ordinary Hazard 1 and 2 occupancies shall be designed to provide a minimum density of0.10 gpm/ft2, 0.15 gpm/ft2 and 0.20 gpm/ft2 respectively. The minimum design area shall be equal to theceiling height times 100. The sprinkler system shall utilize listed quick response sprinklers with a K-factor of11.2 or greater. The maximum sprinkler discharge pressure allowed is 30 psi.

11.3.5.2 Non-storage occupancies with ceiling heights over 50 feet. All structures, regardless of occupancyor hazard classification, with ceiling heights exceeding 50'-0", require a design analysis from a licensedFire Protection Engineer. This analysis must be submitted to the Authority Having Jurisdiction for reviewand approval prior to the start of construction. Deluge systems shall be installed using sprinklers with aminimum k-factor of 11.2 with a maximum sprinkler discharge pressure of 30 psi.

11.3.5.3 Extra Hazard Occupancies with ceiling height over 25 feet. Extra Hazard occupancies with ceilingheights over 25 feet require a design analysis from a licensed Fire Protection Engineer. This analysis mustbe submitted to the Authority Having Jurisdiction for review and approval prior to the start of construction.

11.3.5.4 Exhibition Spaces and Stages with Fly Galleries. For design criteria for Exhibition Spaces andStages with Fly Galleries, see Section 11.3.5.


NFPA 13 has significant data for sprinkler protection of storage commodities in high-ceiling areas, but does not provide additional guidance for sprinkler protection in non-storage high-ceiling areas.Tests after the McCormick Place Fire show the need for increased remote areas for tall ceilings. That is the basis for the increases in remote area for the light and ordinary occupancies shown in proposed section 11.3.5.1.In all, the dynamics of fire in tall spaces call for increased water droplet size. In tall spaces, the forces of fire plumes are greater, and the water droplet has farther to travel in order to reach the fire. In order to have the water droplet be able to penetrate the plume intact and reach the fire, larger droplets are necessary. This is the basis for the larger k-factor and the limit on sprinkler pressure in proposed sections 11.3.5.1 and 11.3.5.2.Delays in sprinkler activation due to loss of heat in the fire plume necessitate the higher remote areas. These remote area increases are shown in proposed section 11.3.5.1. After a height of 50 feet, there is concern that activation of sprinklers may take longer than is feasible for responsible fire protection. For that reason, analysis is required for spaces with ceiling heights over 50 feet in proposed section 11.3.5.2.Finally, there is a requirement for analysis for extra hazard occupancies with ceiling heights exceeding 25 feet. It is recognized that the same inherent hazards of tall ceilings are present in extra hazard occupancies. However, there is little available test data providing guidance on protection for extra hazard occupancies with tall ceilings. As such, all extra hazard occupancies with ceilings over 25 feet require additional analysis prior to approvals.


Submitter Full Name: Lynn Nielson

Organization: City Of Henderson

Affilliation: Self

Street Address:

City:

State:

Zip:



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SPRINKLER PROTECTION FOR EXHIBITION SPACES AND STAGES WITH FLY GALLERIES

11.3.6 SPRINKLER PROTECTION FOR EXHIBITION SPACES AND STAGES WITH FLY GALLERIES

11.3.6.1 Exhibition Spaces and Stages with Fly Galleries with ceiling heights up to 35 feet. Sprinklersystems protecting exhibition spaces and stages with fly galleries with ceiling heights up to 35 feet shall bedesigned to provide a minimum density of 0.30 gpm/ft2. The minimum design area shall be 2,500 squarefeet. The sprinkler system shall utilize standard coverage quick response sprinklers with a k-factor of 8.0or greater. The maximum sprinkler discharge pressure allowed is 30 psi. A hose stream demand of 500gpm shall be provided.

11.3.6.2 Exhibition Spaces and Stages with Fly Galleries with ceiling heights between 35 and 60 feet. Sprinkler systems protecting exhibition spaces and stages with fly galleries with ceiling heights between35 and 60 feet shall be designed to provide a minimum density of 0.45 gpm/ft2. The minimum design areashall be 2,500 square feet. The sprinkler system shall utilize standard coverage quick response sprinklerswith a k-factor of 11.2 or greater. The maximum sprinkler discharge pressure allowed is 30 psi. A hosestream demand of 500 gpm shall be provided.

11.3.6.3 Exhibition Spaces and Stages with Fly Galleries ceiling heights over 60 feet. Exhibition spacesand stages with fly galleries with ceiling heights exceeding 60'-0", require a design analysis from a licensedFire Protection Engineer. This analysis must be submitted to the Authority Having Jurisdiction for reviewand approval prior to the start of construction. Deluge systems shall be installed using standard coveragesprinklers with a minimum k-factor of 11.2 with a maximum sprinkler discharge pressure of 30 psi. A hosestream of 500 gpm shall be provided.


Portions of this proposal are derived from FM data sheets on non-storage areas with high floor to ceiling clearance. The intent of the amendment is to address fire sprinkler requirements for high-ceiling spaces for exhibition spaces and for stages with fly loft areas. NFPA 13 has significant data for sprinkler protection of storage commodities in high-ceiling areas, but does not provide additional guidance for sprinkler protection in non-storage high-ceiling areas.

During development of the Boston Convention Center, FM Global did several tests to determine sprinkler effectiveness. FM Global performed tests under a 60 foot ceiling of typical exhibit spaces. The results of the test led to criteria from FM, requiring a minimum density of 0.45 gpm/ft2, a design area of 5,000 square feet, extra-large orifice heads (k=11.0), quick response sprinklers, a hose stream demand of 500 gpm, and a maximum sprinkler pressure of 30 psi. Later these criteria have been incorporated into FM Data Sheet 3-26, which is currently published. The criteria being presented in this amendment follow directly from the criteria for non-storage occupancies, heavy loading. In addition, the 30 psi limit for each head is added to ensure large droplet sizes.

In all, the dynamics of fire in tall spaces call for increased water droplet size. In tall spaces, the forces of fire plumes are greater, and the water droplet has farther to travel in order to reach the fire. In order to have the water droplet be able to penetrate the plume intact and reach the fire, larger droplets are necessary. This is the basis for the larger k-factor and the limit on sprinkler head pressure.

This amendment is being presented solely for exhibition spaces and for stages with fly galleries. Exhibition spaces are considered to be spaces where large exhibits, such as manufactured housing, boats, vehicles, multi-story exhibit booths, and other similar large displays are possible. In general, the space would have to allow for vehicles to drive into. Meeting rooms that do not have roll-up doors are not considered exhibition spaces.

Examples of spaces that would be considered exhibition spaces would be the Las Vegas Convention Center, the Sands Expo, the Mandalay Bay convention center, and the MGM Grand Convention Center, to name a few. The lack of controls over what is allowed on the floors, and the fact that the spaces are constructed to handle large displays, lead to the need for this proposal.


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In similar fashion, stages that are equipped with fly lofts is also being proposed for this amendment. Fly lofts are considered elevated walking areas that can support stage equipment and storage of props for “flying” into the stage box. Typically these are on grid floors. Stage props are not typically reviewed for flammability, and the amount of props on stage is not limited. Further, with fly galleries, there is the ability to deliver large props to the stage, and often there will be multiple back drops that can obstruct sprinkler coverage. Due to the number and types of props that can occur on large stages, and the back drops that obstruct sprinklers, this proposal is necessary.




Affilliation: Self

Street Address:

City:

State:

Zip:



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Public Input No. 274-NFPA 13-2016 [ Section No. 11.3.1.2 [Excluding any Sub-Sections]

]

Unless the requirements of 11 of 11 .2.3.1. 4 (4) 5.2 are met for buildings having unsprinklered combustibleconcealed spaces, as described in 8.15.1.2 and 8.15.6, the minimum design area of sprinkler operation forthat portion of the building shall be eight sprinklers.


11.3.1.2 references the wrong section number. As written, the 2016 standard references the 2013 section number for exceptions to the 8 sprinkler design area.



Public Input No. 268-NFPA 13-2016[Section No. 8.15.1.2.6]

These linked inputs all pertain to combustible concealed spacereferences, exceptions and hydraulic design requirements.


Submitter Full Name: Stephen Leyton

Organization: Protection Design Consulting

Street Address:

City:

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11.3.3 Water Curtains.

11.3.3.1

Sprinklers in a water curtain such as described in 8.15.4 or 8.15.17.2 shall be hydraulically designed toprovide a discharge of 3 gpm per lineal foot (37 L/min per lineal meter) of water curtain, with no sprinklersdischarging less than 15 gpm (57 L/min).

11.3.3.2

For water curtains employing automatic sprinklers, the number of sprinklers calculated in this water curtainshall be the number in the length corresponding to the length parallel to the branch lines in the areadetermined by 23.4.4.2.

11.3.3.3

For a deluge system water curtain providing proscenium opening protection in accordance with 8.15.17.2,the water curtain shall be calculated to supply all of the open sprinklers attached thereto.

11.3.3.4

If a single fire can be expected to operate sprinklers within the water curtain and within the design area of ahydraulically calculated system, the water supply to the water curtain shall be added to the water demandof the hydraulic calculations and shall be balanced to the calculated area demand.

11.3.3. 4 5

Hydraulic design calculations shall include a design area selected to include ceiling sprinklers adjacent tothe water curtain.


Section 8.15.17.2, for deluge system water curtain protection of proscenium openings, says to see Chapter 11 for design criteria, but the current text only addresses automatic sprinklers and calls for a limited number of water curtain sprinklers to be calculated as per the “1.2 Rule”, whereas for a deluge system flow from all of the open sprinklers on the system will be involved.




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11.3.4.1

Where standard sprinkler spacing does not exceed 8 ft (2.4 m) measured perpendicular to the slope, theminimum sprinkler discharge pressure shall be 7 psi (0.5 bar).


Section 11.3.4 is correlated with Section 8.6.4.1.4, which is limited to standard sprinklers. The proposed revision clarifies this correlation.



Public Input No. 601-NFPA 13-2016 [Section No. 11.3.4.2]


Submitter Full Name: Tanya Barlow

Organization: Tyco

Street Address:

City:

State:

Zip:



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11.3.4.2

Where standard sprinkler spacing exceeds 8 ft (2.4 m) measured perpendicular to the slope, theminimum sprinkler discharge pressure shall be 20 psi (1.4 bar).


Section 11.3.4 is correlated with Section 8.6.4.1.4, which is limited to standard sprinklers. The proposed revision clarifies this correlation.





Submitter Full Name: Tanya Barlow

Organization: Tyco

Street Address:

City:

State:

Zip:



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11.3.5 Sprinkler-Protected Glazing.

Where the sprinkler-protected glazing is required to comply with 8.15.26, the water supply duration for thedesign area that includes the window sprinklers shall be not less than the required rating of the assembly.

11.3.5.1 For sprinkler-protected glazing, the number of sprinklers calculated for the glazing shall be thenumber in the length corresponding to the length parallel to the branch lines in the area determined by23.4.4.2.

11.3.5.2 If a single fire can be expected to operate sprinklers for the sprinkler-protected glazing and withinthe design area of a hydraulically calculated system, the water supply to the sprinkler-protected glazingshall be added to the water demand of the hydraulic calculations and shall be balanced to the calculatedarea demand.

11.3.5.3 Hydraulic design calculations shall include a design area selected to include ceiling sprinklersadjacent to the sprinkler-protected glazing.


This proposal is add the requirements for calculating the sprinkler-protected glazing in conjunction with the ceiling sprinkler system, the same as for water curtains.




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[NOTE TO EDITOR: This PI addresses content proposed to move from existing Section 12.1 General.

The requirements of Section 12.1 shall apply to all storage arrangements and commodities other thanmiscellaneous storage (see Chapter 13 ) and as modified by specific sections in Chapter 14 throughChapter 20 .

into proposed new Section 20.6. The proposed Chapter 20 section is part of the NFPA 13reorganization. This PI shows new paragraph numbers in brackets. The new Section 20.6paragraphs are all present below but out of sequence.]

12.1 [20.6] Building Construction and Storage - Height, Clearance, and Air Flow

12.1.1 [20.6.5] Roof Vents and Draft Curtains.

See Section C.6.

12.1.1.1* [20.6.5.1*]

Manually operated roof vents or automatic roof vents with operating elements that have a highertemperature classification than the automatic sprinklers shall be permitted.

12.1.1.2 [20.6.5.2]

Early suppression fast-response (ESFR) sprinklers shall not be used in buildings with automatic heat orsmoke vents unless the vents use a high-temperature rated, standard-response operating mechanism.

12.1.1.3* [20.6.5.3*]

Draft curtains shall not be used within ESFR sprinkler systems.

12.1.1.3.1 [20.6.5.3.1]

Draft curtains separating ESFR sprinklers at system breaks or from control mode sprinklers or betweenhazards shall be permitted. (See 8.4.6.4.)

[NEW 20.6.5.3.2] Where ESFR sprinkler systems are installed adjacent to sprinkler systems withstandard-response sprinklers, a draft curtain of noncombustible construction and at least 2 ft (600 mm) indepth shall be required to separate the two areas.

[NEW 20.6.5.3.3] A clear aisle of at least 4 ft. (1.2 m) centered below the draft curtain shall bemaintained for separation.

12.1.2 [20.6.1] Ceiling Slope.

The sprinkler system criteria specified in [Chapters 21 through 24] Chapter 12 and Chapters 14 through20 are intended to apply to buildings with ceiling slopes not exceeding 2 in 12 (16.7 percent) unlessmodified by a specific section in [Chapters 21 through 24] Chapter 12 and Chapters 14 through 20.

12.1.3* [20.6.2*] Building and Storage Height.

12.1.3.1 [20.6.2.1]

The maximum building height shall be measured to the underside of the roof deck or ceiling in the storagearea or in accordance with [20.6.2.2] 12.1.3.1.1 through [20.6.2.4] 12.1.3.1.3.

12.1.3.1.1 [20.6.2.2]

For corrugated metal deck roofs up to 3 in. (75 mm) in depth, the maximum roof height shall be measuredfrom floor to the bottom of the deck.

12.1.3.1.2 [20.6.2.3]

For decks deeper than 3 in. (75 mm), the maximum roof height shall be measured to the highest point onthe deck.

12.1.3.1.3 [20.6.2.4]


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For ceilings that have insulation installed directly against underside of the ceiling or roof structure, themaximum roof height shall be measured to the bottom of insulation and shall be in accordance with[20.6.2.4.1] 12.1.3.1.3.1 or [20.6.2.4.2] 12.1.3.1.3.2.

12.1.3.1.3.1 [20.6.2.4.1]

For insulation that is installed directly against the ceiling or roof structure and is installed flat and parallel tothe ceiling or roof structure, the maximum roof height shall be measured to the underside of the insulation.

12.1.3.1.3.2 [20.6.2.4.2]

For insulation that is installed in a manner that causes it to deflect or sag down from the ceiling or roofstructure, the maximum roof height shall be measured as half of the distance of the deflection from theinsulation high point to the insulation low point. If the deflection or sag in the insulation exceeds 6 in.(150 mm), the maximum roof height shall be measured to the high point of the insulation.

12.1.3.1.4* [20.6.2.5*]

Where the building height changes within a compartment, the sprinklers directly over the storage shall becapable of protecting storage directly beneath.

12.1.3.1.4.1 [20.6.2.5.1]

Where a barrier to heat and smoke in accordance with 12.3(2) or 12.3(3) is not present, the sprinklercriteria 15 ft (4.6 m) into the perimeter of the lower ceiling area shall be the same as the sprinkler protectionfor the high ceiling area.

12.1.3.2 [20.6.2.6]

ESFR sprinklers shall be used only in buildings equal to, or less than, the height of the building for whichthey have been listed.

12 [NEW 20 . 1 6 .3 ] Storage Height

[NEW 20 . 3 6.3.1]

The sprinkler system design shall be based on the storage height

and clearance to ceiling

that routinely or periodically exist in the building and create the greatest water demand.

12.1.3.3 [20.6.3.2]

Where storage is placed above doors, the storage height shall be calculated from the base of storageabove the door.

12.1.3.4 [20.6.4] Clearance to Ceiling.

12.1.3.4.1* [20.6.4.1*]

The clearance to ceiling shall be measured in accordance with [20.6.4.1.1] 12.1.3.4.1.1 through[20.6.4.1.3] 12.1.3.4.1.3.

12.1.3.4.1.1 [20.6.4.1.1]

For corrugated metal deck roofs up to 3 in. (75 mm) in depth, the clearance to ceiling shall be measuredfrom the top of storage to the bottom of the deck.

12.1.3.4.1.2 [20.6.4.1.2]

For corrugated metal deck roofs deeper than 3 in. (75 mm), the clearance to ceiling shall be measured tothe highest point on the deck.

12.1.3.4.1.3 [20.6.4.1.3]

For ceilings that have insulation attached directly to underside of the ceiling or roof structure, the clearanceto ceiling shall be measured from the top of storage to the bottom of the insulation and shall be inaccordance with [20.6.4.1.3(A)] 12.1.3.4.1.3(A) or {20.6.4.1.3(B)] 12.1.3.4.1.3(B).

(A)

For insulation that is attached directly to the ceiling or roof structure and is installed flat and parallel to theceiling or roof structure, the clearance to ceiling shall be measured from the top of storage to the undersideof the insulation.


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(B)

For insulation that is installed in a manner that causes it to deflect or sag down from the ceiling or roofstructure, the clearance to ceiling shall be measured from the top of storage to a point half of the distanceof the deflection from the insulation high point to the insulation low point. If the deflection or sag in theinsulation exceeds 6 in. (150 mm), the clearance to ceiling shall be measured from the top of storage to thehigh point of the insulation.

12.1.3.4.2 [20.6.4.2]

For spray sprinkler CMDA criteria where the clearance to ceiling exceeds those identified in thissection Table 20.6.4.2 , the requirements of [20.6.4.3] 12.1.3.4.3 through [20.6.4.8] 12.1.3.4.8 shall apply.

[NEW Table 20.6.4.2]

Table 20.6.4.2. Maximum clearance from top of storage to ceiling for CMDAprotection criteria.

CommodityClass I to

IVGroup APlastics

Palletized, Solid-Piled, Bin Box, Shelf, orBack-to-Back Shelf Storage

20 ft. (6.1m)

20 ft. (6.1 m)

Rack Storage up to 25 ft. (7.6 m)20 ft. (6.1m)

10 ft. (3.1 m)

Rack Storage > 25 ft. (7.6 m)10 ft.(3.1m)

10 ft. (3.1 m)

12.1.3.4.3 [20.6.4.3]

Where the clearance to ceiling exceeds 20 ft (6.1 m) for Chapters 14 and 15 , for palletized, solid-piled,bin box, shelf, or back-to-back shelf storage the protection shall be based upon the storage height thatwould result in a clearance to ceiling of 20 ft (6.1 m).

12.1.3.4.4 [20.6.4.4]

Where the clearance to ceiling exceeds 20 ft (6.1 m) for Section 16.2 , for rack storage of Class I to IVcommodity storage up to and including 25 ft. (7.6 m) in height, the protection shall be based upon thestorage height that would result in a clearance to ceiling of 20 ft 20 ft. (6. 1 m 1 m ) or providing one levelof supplemental, quick-response in-rack sprinklers located directly below the top tier of storage and atevery flue space intersection. in accordance with Chapter 25.

12.1.3.4.5 [20.6.4.5]

Where the clearance to ceiling exceeds 10 ft. (3.0 m) for Section 16.3 or Section 17.2 , for rack storageof Class I to IV commodity above 25 ft. (7.6 m) in height or Group A plastic commodity up to 25 ft. (7.6 m)in height, the protection shall be based upon the storage height that would result in a clearance to ceilingof 10 ft 10 ft. (3. 0 m 1 m ) or providing one level of supplemental, quick-response in-rack sprinklerslocated directly below the top tier of storage and at every flue space intersection in accordance withChapter 25 .

12.1.3.4.6 [20.6.4.6]

Where the clearance exceeds 10 ft (3.0 m) for Section 17.3 for rack storage of Group A plastic above 25ft. (7.6 m) in height , protection shall be based upon providing one level of supplemental, quick-responsein-rack sprinklers located directly below the top tier of storage and at every flue space intersection inaccordance with Chapter 25 .

12.1.3.4.7 [20.6.4.7]

When applying the supplemental in-rack sprinkler option, the ceiling density shall be based upon the givenstorage height with an assumed acceptable clearance to ceiling.

12.1.3.4.8 [20.6.4.8]

If in-rack sprinklers are required for the actual storage height with an acceptable clearance to ceiling,in-rack sprinklers shall be installed as indicated by that criteria.

12.1.4* [20.6.6] High Volume Low Speed (HVLS) Fans.


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12.1.4.1 [20.6.6.1*]




(3) The vertical clearance from the HVLS fan to sprinkler deflector shall be a minimum of 3 ft (900 mm).

(4) All HVLS fans shall be interlocked to shut down immediately upon receiving a waterflow signal fromthe alarm system in accordance with the requirements of NFPA 72.


This changes offered are in support of the NFPA 13 reorganization. The changes are not intended to introduce any technical change to the standard.




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Public Input No. 536-NFPA 13-2016 [ New Section after 12.1.2 ]

Revise NFPA 13 to take into account the information learned from the Fire Protection ResearchFoundation project on slope ceilings and storage occupancies. Address discharge criteria forsprinklers under sloped ceilings and orientation of the sprinkler with respect to the floor or ceiling.


A comprehensive research program from the Fire Protection Research Foundation will yield results before the end of this cycle of NFPA 13 and needs to be incorporated into the earliest possible edition of the standard.



Public Input No. 537-NFPA 13-2016 [New Section after 8.5.4.2]




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12.1.3.4 Clearance to Ceiling.

12.1.3.4.1*

The clearance to ceiling shall be measured in accordance with 12.1.3.4.1.1 through 12.1.3.4.1.3.

12.1.3.4.1.1

For corrugated metal deck roofs up to 3 in. (75 mm) in depth, the clearance to ceiling shall be measuredfrom the top of storage to the bottom of the deck.

12.1.3.4.1.2

For corrugated metal deck roofs deeper than 3 in. (75 mm), the clearance to ceiling shall be measured tothe highest point on the deck.

12.1.3.4.1.3

For ceilings that have insulation attached directly to underside of the ceiling or roof structure, the clearanceto ceiling shall be measured from the top of storage to the bottom of the insulation and shall be inaccordance with 12.1.3.4.1.3(A) or 12.1.3.4.1.3(B).

(A)

For insulation that is attached directly to the ceiling or roof structure and is installed flat and parallel to theceiling or roof structure, the clearance to ceiling shall be measured from the top of storage to the undersideof the insulation.

(B)

For insulation that is installed in a manner that causes it to deflect or sag down from the ceiling or roofstructure, the clearance to ceiling shall be measured from the top of storage to a point half of the distanceof the deflection from the insulation high point to the insulation low point. If the deflection or sag in theinsulation exceeds 6 in. (150 mm), the clearance to ceiling shall be measured from the top of storage to thehigh point of the insulation.

12.1.3.4.2

For spray sprinkler criteria where the clearance to ceiling exceeds those identified in this section, therequirements of 12.1.3.4.3 through 12.1.3.4.8 shall apply.

12.1.3.4.3

Where the clearance to ceiling exceeds 20 ft (6.1 m) for Chapters 14 and 15, protection shall be basedupon the storage height that would result in a clearance to ceiling of 20 ft (6.1 m).

12.1.3.4.4

Where the clearance to ceiling exceeds 20 ft (6.1 m) for Section 16.2 , protection shall be based upon thestorage height that would result in a clearance to ceiling of 20 ft (6.1 m) or providing one level ofsupplemental, quick-response in-rack sprinklers located directly below the top tier of storage and at everyflue space intersection.

Protection of Class I-IV commodities with excessive clearance from the top of storage to the ceilingsprinkler deflectors shall be in accordance with Table 12.1.3.4.

5

Where the clearance to ceiling exceeds 10 ft (3.0 m) for Section 16.3 or Section 17.2 , protection shall bebased upon the storage height that would result in a clearance to ceiling of 10 ft (3.0 m) or providing onelevel of supplemental, quick-response in-rack sprinklers located directly below the top tier of storage and atevery flue space intersection.


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12.1.3.4.6

Where the clearance exceeds 10 ft (3.0 m) for Section 17.3 , protection shall be based upon providing onelevel of supplemental, quick-response in-rack sprinklers located directly below the top tier of storage and atevery flue space intersection.

12.1.3.4.7

When applying the supplemental in-rack sprinkler option, the ceiling density shall be based upon the givenstorage height with an assumed acceptable clearance to ceiling.

2(a)

Protection of Plastic and Rubber commodities with excessive clearance from the top of storage to theceiling sprinkler deflectors shall be in accordance with Table 12.1.3.4.

8 If in-rack sprinklers are required for the actual storage height with an acceptable clearance to ceiling,in-rack sprinklers shall be installed as indicated by that criteria.

2(b)



PC_75.pdf 13-PC_75



Section 12.1.3.4 (Clearance to Ceiling) contains numerous criteria, in which critical protection criteria for excessive clearance is obscured in subsections 12.1.3.4.3 through 12.1.3.4.8. These are even less prominent than the 2010 edition in which Section 12.1.3.4 was entitled "Excessive Clearance." Furthermore, the narratives of the sections are cumbersome, referring to other chapter sections with no commodity description. The proposed Tables will draw attention to and define the various storage configurations. In addition to incorporation of this Table into Chapter 12, it is recommended that appropriate sections of Chapters 14, 15, 16, and 17 refer to these critical Tables in Chapter 12. Specifically, "maximum storage height" in the Tables in Chapter 14, 15, 16 and 17 should reference the minimum presumed heights mandated when excessive clearance occurs.



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12.2* [20.11*] Small Hose Connections.

12.2.1 [20.11.1]

Small hose connections [1 1⁄2 in. (38 mm)] shall be provided where required by the authority havingjurisdiction in accordance with 8.17.5 for first-aid fire-fighting and overhaul operations.

12.2.2 [20.11.2]

Small hose connections shall not be required for the protection of Class I, II, III, and IV commodities stored12 ft (3.7 m) or less in height.


These changes are offered in support of the NFPA 13 reorganization. The changes are not intended to introduce any technical change to the standard.




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12.3 * Adjacent Hazards or Design Methods.

For buildings with two or more adjacent hazards or design methods, the following shall apply:

(1) Where areas are not physically separated by a barrier or partition capable of delaying heat from afire in one area from fusing sprinklers in the adjacent area, the required sprinkler protection for themore demanding design basis shall extend 15 ft (4.6 m) beyond its perimeter.

(2) The requirements of 12.3(1) shall not apply where the areas are separated by a draft curtain orbarrier located above an aisle, horizontally a minimum of 2 ft (600 mm) from the adjacent hazard oneach side, or a partition that is capable of delaying heat from a fire in one area from fusing sprinklersin the adjacent area.

(3) The requirements of 12.3(1) shall not apply to the extension of more demanding criteria from anupper ceiling level to beneath a lower ceiling level where the difference in height between the ceilinglevels is at least 2 ft (600 mm), located above an aisle, horizontally a minimum 2 ft (600 mm) from theadjacent hazard on each side.



PC_230.pdf 13-PC_230



redundancy task group agrees with this PC Already addressed by 11.1.2



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Public Comment No. 230-NFPA 13-2014 [ Section No. 12.3 ]

12.3 * Adjacent Hazards or Design Methods.


(1) Where areas are not physically separated by a barrier or partition capable of delaying heat from a fire inone area from fusing sprinklers in the adjacent area, the required sprinkler protection for the moredemanding design basis shall extend 15 ft (4.6 m) beyond its perimeter.

(2) The requirements of 12.3 (1) shall not apply where the areas are separated by a draft curtain, barrier,orpartition that is capable of delaying heat from a fire in one area from fusing sprinklers in the adjacentarea.

(3) The requirements of 12.3 (1) shall not apply to the extension of more demanding criteria from an upperceiling level to beneath a lower ceiling level where the difference in height between the ceiling levels is atleast 2 ft (0.6 m).


redundancy task group agrees with this PC

Already addressed by 11.1.2



Public Comment No. 231-NFPA 13-2014 [Section No. A.12.3]

Related Item

Public Input No. 114-NFPA 13-2013 [Global Input]



Organization: American Fire Sprinkler Assoc.

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Submittal Date: Thu May 08 16:27:36 EDT 2014

Committee Statement

CommitteeAction:

Rejected but held



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12.3* [20.10*] Adjacent Hazards or Design Methods.

[NEW 20.10.1]


(1) Where areas are not physically separated by a barrier or partition capable of delaying heat from afire in one area from fusing sprinklers in the adjacent area, the required sprinkler protection for themore demanding design basis shall extend 15 ft (4.6 m) beyond its perimeter.

(2) The requirements of 12.3(1) [20.10.1(1)] shall not apply where the areas are separated by a draftcurtain or barrier located above an aisle, horizontally a minimum of 2 ft (600 mm) from the adjacenthazard on each side, or a partition that is capable of delaying heat from a fire in one area from fusingsprinklers in the adjacent area.

(3) The requirements of 12.3(1) [20.10.1(1)] shall not apply to the extension of more demanding criteriafrom an upper ceiling level to beneath a lower ceiling level where the difference in height between theceiling levels is at least 2 ft (600 mm 610 mm ), located above an aisle, horizontally a minimum 2 ft(600 mm 610 mm ) from the adjacent hazard on each side.






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12.4* [20.13.2*] Wet Pipe Systems.

12.4.1 [20.13.2.1]

Sprinkler systems shall be wet pipe systems.

12.4.2* [20.13.2.2*]

In areas that are subject to freezing or where special conditions exist, dry pipe systems and preactionsystems shall be permitted to protect storage occupancies.






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12.5 Dry Pipe and Preaction Systems.

For dry pipe systems and preaction systems using Control Mode Density Area (CMDA) criteria , the area ofsprinkler operation shall be increased by 30 percent without revising the density.


The design area for CMSA sprinklers in a dry-pipe or preaction system has already been increased by NFPA 13. Technically, this section requires it to be increased again, which was never the intent. This section has only ever applied to the density/area approach.




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12.5 [20.13.3] Dry Pipe and Preaction Systems.

For dry pipe systems and preaction systems, the area of sprinkler operation shall be increased by30 percent without revising the density.


This change is offered in support of the NFPA 13 reorganization. It is not intended to introduce any technical change to the standard.




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Public Input No. 254-NFPA 13-2016 [ Section No. 12.6.7 [Excluding any Sub-Sections] ]

[NEW 20.10.3]

CMSA and ESFR sprinklers shall be permitted to protect storage of Class I through Class IV commodities,Group A plastic commodities, miscellaneous storage, and other storage as specified in Chapter 12 [20]through Chapter 20 [24] or by other NFPA standards.






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[NEW 22.1] General.

The criteria in Chapter 20 shall apply to storage protected with CMSA sprinklers.

12.6.7.2 [22.1.1]

Quick-response CMSA sprinklers designed to meet any criteria in Chapter 12 or Chapter 14 throughChapter 20 Chapters 21 thorugh 24 shall be permitted to protect any of the following:

(1) Light hazard occupancies

(2) Ordinary hazard occupancies

(3) Any storage arrangement in Chapter 13 referencing OH1, OH2, EH1, and EH2 design criteria

(4) Extra hazard occupancies that do not include:

(5) ?Dust, lint, or other materials introducing the probability of rapidly developing fires

(6) Substantial amounts of flammable and combustible liquids

(7) Extensive shielding of combustibles


This change is offered in support of the NFPA 13 reorganization. It is not intended to introduce any technical change to the standard. The original 12.6.7.2 included miscellaneous and low-piled storage which will be included under ordinary and extra hazard occupancies after the NFPA 13 reorganization. It is anticipated the intent is to continue allowing CMSA sprinklers to protect miscellaneous and low-piled storage, but it is not the intent to extend the allowance to other cases within the extra hazard occupancy definition.




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12.6.7.3 [22.1.2]

Standard-response CMSA sprinklers designed to meet any criteria in Chapter 12 or Chapter 14 throughChapter 20 Chapters 21 through 24 shall be permitted to protect any of the following:

(1) Ordinary hazard occupancies

(2) Any storage arrangement in Chapter 13 referencing OH1, OH2, EH1, and EH2 design criteria

(3) Extra hazard occupancies that do not include:

(4) Dust, lint, or other materials introducing the probability of rapidly developing fires

(5) Substantial amounts of flammable and combustible liquids

(6) Extensive shielding of combustibles


This change is offered in support of the NFPA 13 reorganization. It is not intended to introduce any technical change to the standard. The original 12.6.7.3 included miscellaneous and low-piled storage which will be included under ordinary and extra hazard occupancies after the NFPA 13 reorganization. It is anticipated the intent is to continue allowing CMSA sprinklers to protect miscellaneous and low-piled storage, but it is not the intent to extend the allowance to other cases within the extra hazard occupancy definition.




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12.7.2* [20.10.4*] Systems with Multiple Hazard Classifications.

For systems with multiple hazard classifications, the hose stream allowance and water supply duration shallbe in accordance with Section 12.8 [20.12] as well as one of the following:

(1) The water supply requirements for the highest hazard classification within the system shall be used.

(2) The water supply requirements for each individual hazard classification shall be used in thecalculations for the design area for that hazard.

(3)






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* For systems with multiple hazard classifications where the higher classification only lies within single

rooms less than or equal to 400 ft2 (37.2 m2) in area with no such rooms adjacent, the water supplyrequirements for the principal occupancy shall be used for the remainder of the system.


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12.7.4 [20.12.5]

The minimum water supply requirements shall be determined by adding the hose stream allowance fromSection 12.8 [20.12] to the water supply for sprinklers as determined by Chapter 12 throughChapter 20 Chapter 20 through Chapter 24 .






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12.7.5 [20.12.6]

The minimum water supply requirements determined from 12.7.4 [20.12.1.7] shall be available for theminimum duration specified in Section 12.8 [20 . 12] .






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12.7.6

Total system water supply requirements shall be determined in accordance with the hydraulic calculationprocedures of Chapter 23.

12.7.6.1

When using the density/area method, the design area shall meet the requirements of 23.4.4.2.1 .

12.7.6.2

When using CMSA, the design area shall meet the requirements of 23.4.4.3.1 .

12.7.6.3

When using ESFR sprinklers, the design area shall consist of the most hydraulically demanding area of 12sprinklers, consisting of four sprinklers on each of three branch lines, unless other specific numbers ofdesign sprinklers are required in other sections of this standard.



PC_109.pdf 13-PC_109



This is adequately addressed by 11.1.3. including referencing section 23.4. The users are fully aware that only the sections applicable to the specific sprinkler type applies so no need to reference subsections of 23.4. There is certainly no value in repeating that ESFR is 12 sprinkler on 4 branch lines. The redundancy task group agrees with this PC.



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Public Comment No. 109-NFPA 13-2014 [ Section No. 12.7.6 ]

12.7.6

Total system water supply requirements shall be determined in accordance with the hydraulic calculationprocedures of Chapter 23.

12.7.6.1


12.7.6.2


12.7.6.3

When using ESFR sprinklers, the design area shall consist of the most hydraulically demanding area of 12sprinklers, consisting of four sprinklers on each of three branch lines, unless other specific numbers of designsprinklers are required in other sections of this standard.


This is adequately addressed by 11.1.3. including referencing section 23.4. The users are fully aware that only the sections applicable to the specific sprinkler type applies so no need to reference subsections of 23.4. There is certainly no value in repeating that ESFR is 12 sprinkler on 4 branch lines.

The redundancy task group agrees with this PC.

Related Item





Street Address:

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Submittal Date: Thu Apr 10 18:33:45 EDT 2014

Committee Statement

CommitteeAction:

Rejected but held



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12.7.6 [20.12.7]

Total system water supply requirements shall be determined in accordance with the hydraulic calculationprocedures of Chapter 23 .

12.7.6.1


12.7.6.2


12.7.6.3

When using ESFR sprinklers, the design area shall consist of the most hydraulically demanding area of 12sprinklers, consisting of four sprinklers on each of three branch lines, unless other specific numbers ofdesign sprinklers are required in other sections of this standard.

Chapter 19.






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12.7.6.2 [22.1.3]

When using CMSA, the design area shall meet the requirements of 23.4.4.3.1.






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[NEW 20.13] Discharge Considerations

12.7.7 [20.13.1] Multiple Adjustments.

12.7.7.1 [20.13.1.1]

Where multiple adjustments to the area of operation are required to be made, these adjustments shall becompounded based on the area of operation originally selected.

12.7.7.2 [20.13.1.2]

If the building has unsprinklered combustible concealed spaces, the rules of Section 12.9 shall be appliedafter all other modifications have been made.

12.7.7.3 [21.1.10.4]

The minimum design density for any sprinkler system installed in a storage occupancy shall be not less

than 0.15 gpm/ft2 (6.1 mm/min) after all adjustments are made.


The changes offered are in support of the NFPA 13 reorganization. The changes are not intended to introduce any technical change to the standard.




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[NOTE TO EDITOR: This PI addresses content proposed to move from existing Section 12.8 intoproposed new Section 20.12. The proposed Chapter 20 section is part of the NFPA 13reorganization.]

12.8 [20.12] Hose Stream Allowance and Water Supply Duration.

[NEW 20. 12. 1]

Hose stream allowance and water supply dura on f or Chapters 20 through 25 shall be in accordance withsection 20.12.

[NEW 20.12.2]

Hose Stream Allowance and Water Supply Duration - General

12. 8.1* [20.12.2.1*]

Tanks shall be sized to supply the equipment that they serve.

12.8.2* [20.12.2.2*]

Pumps shall be sized to supply the equipment that they serve.

12.8.3 [20.12.2.3]

Water allowance for outside hose shall be added to the sprinkler requirement at the connection to the citymain or a yard hydrant, whichever is closer to the system riser.

12.8.4 [20.12.2.4]

Where inside hose connections are planned or are required, the following shall apply:

(1) A total water allowance of 50 gpm (190 L/min) for a single hose connection installation shall be addedto the sprinkler requirements.

(2) A total water allowance of 100 gpm (380 L/min) for a multiple hose connection installation shall beadded to the sprinkler requirements.

(3) The water allowance shall be added in 50 gpm (190 L/min) increments beginning at the most remotehose connection, with each increment added at the pressure required by the sprinkler system design atthat point.

12.8.5 [20.12.2.5]

When hose valves for fire department use are attached to wet pipe sprinkler system risers in accordancewith 8.17.5.2, the following shall apply:

(1) The water supply shall not be required to be added to standpipe demand as determined fromNFPA 14.

(2) Where the combined sprinkler system demand and hose stream allowance of Chapter 12 andChapters 14 through 20 exceeds the requirements of NFPA 14, this higher demand shall be used.

(3) For partially sprinklered buildings, the sprinkler demand, not including hose stream allowance, asindicated in Chapter 12 and Chapters 14 through 20 shall be added to the requirements given inNFPA 14.

12.8.6 [20.12.3]


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Unless indicated otherwise, the minimum water supply requirements for a hydraulically designed sprinklersystem shall be determined by adding the hose stream allowance from [ Table 20. 12. 3] Table 12. 8.6 tothe water demand for sprinklers.

Table 12.8.6 Hose 6 [Table 20.12.3] Hose Stream Allowance and Water Supply Duration

CommoditySprinkler

Type

SprinklerSpacing

Type

Number ofCeiling

Sprinklers inDesign Area*

Size ofDesignArea atCeiling

HoseStream

Allowance

WaterSupply

Duration(minutes)gpm L/min

Class I-IVCommodities, GroupA plastics, idle woodpallets, idle plastic

pallets andmiscellaneous

storage

Control modedensity/area

(CMDA)

Standardand

extended-coverage

NA

Up to

1200 ft2

(110 m2) 250 950 60

Over

1200 ft2

(111 m2) up

to 1500 ft2

(140 m2) 500 1900 90

Over

1500 ft2

(139 m2) up

to 2600 ft2

(240 m2) 500 1900 120

Over

2600 ft2

(240 m2) 500 1900 150

Control ModeSpecific

Application(CMSA)

Standard

Up to 12 NA 250 950 60

Over 12 to 15 NA 500 1900 90

Over 15 to 25 NA 500 1900 120

Over 25 NA 500 1900 150

Extended-coverage

Up to 6 NA 250 950 60

Up to 8† NA 250 950 60

Over 6 to 8 NA 500 1900 90

Over 8 to 12 NA 500 1900 120

Over 12 NA 500 1900 150

EarlySuppression

FastResponse

(ESFR)

Standard

Up to 12 NA 250 950 60

Over 12 to 15 NA 500 1900 90

Over 15 to 25 NA 500 1900 120

Over 25 NA 500 1900 150

On-floor rubber tirestorage up to 5 ft(1.5 m) in height

CMDA &CMSA

Standardand

extended-coverage Any Any 250 950 120

Rubber tire storage

CMDA

Standardand

extended-coverage NA

Up to

5000 ft2

(372 m2) 750 2850 180

CMSA Standard Up to 15 NA 500 1900 180

ESFR StandardUp to 12 NA 250 950 180

Over 12 to 20 NA 500 1900 180


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CommoditySprinkler

Type

SprinklerSpacing

Type

Number ofCeiling

Sprinklers inDesign Area*


HoseStream

Allowance

WaterSupply


Roll paper

CMDA Standard

NA

Up to

4000 ft2

(372 m2) 500 1900 120


ESFR Standard Up to 12 NA 250 950 60

Alternative Protectionper 16.1.2.4 or

17.1.2.9NA NA

NA NA 500 1900 120

NA: Not applicable.

*For CSMA and ESFR sprinklers, the additional sprinklers included in the design area for obstructions donot need to be considered in determining the total number of sprinklers in this column.

†Limited to a maximum of 144 ft2 (13.4 m2) per sprinkler.

[NEW 20.12.4] Baled Cotton.

[PI Note: See separate PI moving existing 20.4.1.1 to new 20.12.4.1]

[PI Note: See separate PI moving existing 20.4.1.2 to new 20.12.4.2]

[PI Note: See separate PI moving existing 12.7.4 to new 20.12.5]








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12.8.6


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Unless indicated otherwise, the minimum water supply requirements for a hydraulically designed sprinklersystem shall be determined by adding the hose stream allowance from Table 12.8.6 to the water demandfor sprinklers.

Table 12.8.6 Hose Stream Allowance and Water Supply Duration

CommoditySprinkler

Type

SprinklerSpacing

Type

Number ofCeiling

Sprinklersin Design

Area*


HoseStream

Allowance

WaterSupply


Class I-IVCommodities,

Group A plastics,idle wood pallets,idle plastic palletsand miscellaneous

storage


(CMDA)

Standardand

extended-coverage

NA

Up to

1200 ft 2

(110 m 2 ) 250 950 60

Over

1200 ft 2

(111 m 2 ) up

to 1500 ft 2

(140 m 2 ) 500 1900 90

Over

1500 ft 2

(139 m 2 )up to

2600 ft 2

(240 m 2 ) 500 1900 120

Over

2600 ft 2

(240 m 2 ) 500 1900 150

Control ModeSpecific

Application(CMSA)

Standard

Up to 12 NA 250 950 60

Over 12 to 15 NA 500 1900 90

Over 15 to 25 NA 500 1900 120

Over 25 NA 500 1900 150

Extended-coverage

Up to 6 NA 250 950 60

Up to 8† NA 250 950 60

Over 6 to 8 NA 500 1900 90

Over 8 to 12 NA 500 1900 120

Over 12 NA 500 1900 150

EarlySuppression

FastResponse(ESFR)

Standard

Up to 12 NA 250 950 60

Over 12 to 15 NA 500 1900 90

Over 15 to 25 NA 500 1900 120

Over 25 NA 500 1900 150

On-floor rubber tirestorage up to 5 ft(1.5 m) in height

CMDA &CMSA

Standardand

extended-coverage Any Any 250 950 120

Rubber tire storageCMDA

Standardand

extended-coverage NA

Up to

5000 ft 2

(372 m 2 ) 750 2850 180



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CommoditySprinkler

Type

SprinklerSpacing

Type

Number ofCeiling

Sprinklersin Design

Area*


HoseStream

Allowance

WaterSupply


ESFR Standard Up to 12 NA 250 950

180

60

Over 12 to 20 NA 500 1900

180

120 ‡

Roll paper

CMDA Standard NA Up to 4000 ft 2 (372 m 2 ) 500 1900 120


ESFR Standard Up to 12 NA 250 950

60

120

Alternative Protection per 16.1.2.4 or 17.1.2.9 NA NA NA NA 500 1900 120

NA: Not applicable.

*For CSMA and ESFR sprinklers, the additional sprinklers included in the design area for obstructions donot need to be considered in determining the total number of sprinklers in this column.

†Limited to a maximum of 144 ft2 (13.4 m2) per sprinkler.

‡ For storage on-tread, on-side, and laced tires in open portable steel racks or palletized portable racks,with pile height up to 25 ft (7.6 m) and building height up to 30 ft (9.1 m) with K-14.0 (K-200) or K16.8(K-240) ESFR sprinklers, the water supply duration shall be 180 minutes.


This proposal seeks to rectify a discrepancy that was introduced during the Second Draft of the cycle leading up to the 2016 edition of the standard, whereby the water supply durations for all of the ESFR protection schemes were changed to 180 minutes (3 hr), whereas in NFPA 13-2013 only one of the ESFR schemes called for a 3 hr duration, while all of the others only specified 1 hr. This appears to be a transcription error that went unnoticed by the Technical Committee.

Public Comment No. 313 and Second Revision No. 146 sought to move the hose stream allowances and water supply duration from the Rubber Tire Storage tables in Chapter 18 to Table 12.8.6, to consolidate water supply information into a single source in the general requirements. However, while in NFPA 13-2013, Table 18.4(d) had a 3 hr duration called up only for on-tread, on-side, and laced tires in open portable steel racks or palletized portable racks, while all of the other 11 piling methods only required 1 hr durations, but in NFPA 13-2016, Table 12.8.6 now specifies 180 minutes (3 hr) for all ESFR protection of rubber tires.

This change was inadvertent. None of the public comments and none of the discussions at the Technical Committee meetings suggested that the 1 hr durations should be revised upwards, so there is no substantiation for the current requirements. They should therefore be changed back. This change was inadvertent. The Technical Committee did not take any action to change the figure after the First Draft. They should therefore be corrected again.




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12.9 Unsprinklered Combustible Concealed Spaces.

12.9. 11.1.8 Restrictions

11.1.8. 1*

When using the density/area method or room design method, unless the requirements of 12.9.2 are metfor buildings having unsprinklered combustible concealed spaces as described in 8.15.1.2 and 8.15.6, the

minimum area of sprinkler operation for that portion of the building shall be 3000 ft2 (280 m2).

12 11 .9 1 .8. 1.1

The design area of 3000 ft2 (280 m2) shall be applied only to the sprinkler system or portions of thesprinkler system that are adjacent to the qualifying combustible concealed space.

12 11 .9 1 .8. 1.2

The term adjacent shall apply to any sprinkler system protecting a space above, below, or next to thequalifying concealed space except where a barrier with a fire resistance rating at least equivalent to thewater supply duration completely separates the concealed space from the sprinklered area.


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12 11 .9 1 .8. 2

The following unsprinklered combustible concealed spaces shall not require a minimum design area of

sprinkler operation of 3000 ft2 (280 m2):




(4) Concealed spaces where rigid materials are used and the exposed surfaces have a flame spreadindex of 25 or less and the materials have been demonstrated to not propagate fire more than 10.5 ft(3.2 m) when tested in accordance with ASTM E 84, Standard Test Method for Surface BurningCharacteristics of Building Materials, or ANSI/UL 723, Standard for Test for Surface BurningCharacteristics of Building Materials, extended for an additional 20 minutes in the form in which theyare installed in the space.

(5) Concealed spaces in which the exposed materials are constructed entirely of fire retardant–treatedwood as defined by NFPA 703.

(6) Concealed spaces over isolated small compartments not exceeding 55 ft2 (5.1 m2) in area.

(7) Vertical pipe chases under 10 ft2 (0.9 m2), provided that in multifloor buildings the chases arefirestopped at each floor using materials equivalent to the floor construction. Such pipe chases shallcontain no sources of ignition, piping shall be noncombustible, and pipe penetrations at each floor shallbe properly sealed.


(9) *Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings aredirectly attached to the bottom of solid wood joists so as to create enclosed joist spaces 160 ft3 (4.5m3) or less in volume, including space below insulation that is laid directly on top or within the ceilingjoists in an otherwise sprinklered concealed space.

(10) *Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings areattached to the bottom of composite wood joists either directly or on to metal channels not exceeding 1 in.(25.4 mm) in depth, provided the adjacent joist channels are firestopped into volumes not exceeding 160 ft3(4.5 m3) using materials equivalent to 1⁄2 in. (12.7 mm) gypsum board and at least 31⁄2 in. (90 mm) of battinsulation is installed at the bottom of the joist channels when the ceiling is attached utilizing metalchannels.



PC_111.pdf 13-PC_111



This criteria is not unique to storage but applies to all types of facilities. It should be located in 11.1 so as to avoid unnecessary redundancy. The two sections that we removed at the first draft meeting that refer to an occupancy hazard classification needs to be returned. When located in 11.1, it presents no conflict to its application to storage since it is self evident that it applies only to the occupancy hazard approach.. The redundancy task group agrees with this PC.



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Public Comment No. 111-NFPA 13-2014 [ Section No. 12.9 ]

12.9 11.1.8 Restrictions.

12 11 .9 1 .8. 1*

When using the density/area method or room design method, unless the requirements of 12.9.2 are met forbuildings having unsprinklered combustible concealed spaces as described in 8.15.1.2 and 8.15.6, the

minimum area of sprinkler operation for that portion of the building shall be 3000 ft2 (279 m2).

12 11 .9 1 .8. 1.1

The design area of 3000 ft2 (279 m2) shall be applied only to the sprinkler system or portions of the sprinklersystem that are adjacent to the qualifying combustible concealed space.

12 11 .9 1 .8. 1.2

The term adjacent shall apply to any sprinkler system protecting a space above, below, or next to the qualifyingconcealed space except where a barrier with a fire resistance rating at least equivalent to the water supplyduration completely separates the concealed space from the sprinklered area.


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12 11 .9 1 .8. 2

The following unsprinklered combustible concealed spaces shall not require a minimum design area of sprinkler

operation of 3000 ft2 (279 m2):

(1) Noncombustible and limited-combustible concealed spaces with minimal combustible loading having noaccess. The space shall be considered a concealed space even with small openings such as those usedas return air for a plenum.

(2) Noncombustible and limited-combustible concealed spaces with limited access and not permittingoccupancy or storage of combustibles. The space shall be considered a concealed space even with smallopenings such as those used as return air for a plenum.


(4) Concealed spaces where rigid materials are used and the exposed surfaces have a flame spread index of25 or less and the materials have been demonstrated to not propagate fire more than 10.5 ft (3.2 m) whentested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics ofBuilding Materials, or ANSI/UL 723, Standard for Test for Surface Burning Characteristics of BuildingMaterials, extended for an additional 20 minutes in the form in which they are installed in the space.

(5) Concealed spaces in which the exposed materials are constructed entirely of fire retardant–treated woodas defined by NFPA 703.


(7) Vertical pipe chases under 10 ft2 (0.93 m2), provided that in multifloor buildings the chases are firestoppedat each floor using materials equivalent to the floor construction. Such pipe chases shall contain nosources of ignition, piping shall be noncombustible, and pipe penetrations at each floor shall be properlysealed.


(9)

(9) *Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings aredirectly attached to the bottom of solid wood joists so as to create enclosed joist spaces 160 ft3 (4.5m3) or less in volume, including space below insulation that is laid directly on top or within the ceilingjoists in an otherwise sprinklered concealed space.

(10) *Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings areattached to the bottom of composite wood joists either directly or on to metal channels not exceeding 1in. (25.4 mm) in depth, provided the adjacent joist channels are firestopped into volumes not exceeding160 ft3 (4.5 m3) using materials equivalent to ¹⁄2 in. (12.7 mm) gypsum board and at least ³¹⁄2 in. (90mm) of batt insulation is installed at the bottom of the joist channels when the ceiling is attachedutilizing metal channels.


This criteria is not unique to storage but applies to all types of facilities. It should be located in 11.1 so as to avoid unnecessary redundancy. The two sections that we removed at the first draft meeting that refer to an occupancy hazard classification needs to be returned. When located in 11.1, it presents no conflict to its application to storage since it is self evident that it applies only to the occupancy hazard approach..

The redundancy task group agrees with this PC



Public Comment No. 112-NFPA 13-2014 [Section No. 11.2.3.1.4]

Public Comment No. 205-NFPA 13-2014 [Section No. A.12.9.1]

Public Comment No. 204-NFPA 13-2014 [Sections A.11.2.3.1.4(3), A.11.2.3.1.4(4)(d),A.11.2.3.1.4(...]


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Related Item





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Submittal Date: Fri Apr 11 14:52:43 EDT 2014

Committee Statement

CommitteeAction:

Rejected but held






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Organization: NFPA


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[NOTE TO EDITOR: This PI addresses content proposed to move from existing Section 12.9 intoproposed new Section 20.7. The proposed Chapter 20 section is part of the NFPA 13 reorganization.]

12.9 [20.7] Unsprinklered Combustible Concealed Spaces.

12.9.1* [20.7.1*]

When using the density/area method or room design method, unless the requirements of [20.7.2] 12.9.2are met for buildings having unsprinklered combustible concealed spaces as described in 8.15.1.2 and

8.15.6, the minimum area of sprinkler operation for that portion of the building shall be 3000 ft2

(280 m 279 m 2).

12.9.1.1 [20.7.1.1]

The design area of 3000 ft2 (280 m 279 m 2) shall be applied only to the sprinkler system or portions of thesprinkler system that are adjacent to the qualifying combustible concealed space.

12.9.1.2 [20.7.1.2]

The term adjacent shall apply to any sprinkler system protecting a space above, below, or next to thequalifying concealed space except where a barrier with a fire resistance rating at least equivalent to thewater supply duration completely separates the concealed space from the sprinklered area.

12.9.2 [20.7.2]

The following unsprinklered combustible concealed spaces shall not require a minimum design area of

sprinkler operation of 3000 ft2 (280 m2):




(4) Concealed spaces where rigid materials are used and the exposed surfaces have a flame spreadindex of 25 or less and the materials have been demonstrated to not propagate fire more than 10.5 ft(3.2 m) when tested in accordance with ASTM E 84, Standard Test Method for Surface BurningCharacteristics of Building Materials, or ANSI/UL 723, Standard for Test for Surface BurningCharacteristics of Building Materials, extended for an additional 20 minutes in the form in which theyare installed in the space.

(5) Concealed spaces in which the exposed materials are constructed entirely of fire retardant–treatedwood as defined by NFPA 703.


(7) Vertical pipe chases under 10 ft2 (0.9 m2), provided that in multifloor buildings the chases arefirestopped at each floor using materials equivalent to the floor construction. Such pipe chases shallcontain no sources of ignition, piping shall be noncombustible, and pipe penetrations at each floor shallbe properly sealed.



These changes are offered in support of the NFPA 13 reorganization. The changes are not intended to introduce


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any technical change to the standard.




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12.10 [20.8] Room Design Method.

12.10.1* [20.8.1*]

The water supply requirements for sprinklers only shall be based upon the room that creates the greatestdemand.

12.10.2 [20.8.2]

To utilize the room design method, all rooms shall be enclosed with walls having a fire resistance ratingequal to the required water supply duration.

12.10.2.1 [20.8.2.1]

Minimum protection of openings shall include automatic- or self-closing doors with the appropriate fireprotection rating for the enclosure.

12.10.3 [20.8.3]

Where the room design method is used, the density shall correspond to that required for the smallest areaacceptable under the density/area method.






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12.11* [20.9*] High-Expansion Foam Systems.

[NEW 20.9.1 High-Expansion Foam Systems - General.

12.11.1 [20.9.1.1]

High-expansion foam systems that are installed in addition to automatic sprinklers shall be installed inaccordance with NFPA 11.

12.11.2 [20.9.1.2]

High-expansion foam systems shall be automatic in operation.

12.11. 3

High-expansion foam used to protect the idle pallet shall have a maximum fill time of 4 minutes.

12.11.4

Detectors for high-expansion foam systems shall be listed and shall be installed at no more than one-halfthe listed spacing.

12.11.5

5 [20.9.1.4]

The release system for the high expansion foam deluge system shall be designed to operate prior to thesprinklers installed in the area.






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12.12* [20.14*] Protection of Idle Pallets.

12.12.1 [20.14.1] Wood Pallets.

12.12.1.1* [20.14.1.1*]

Wood pallets shall be permitted to be stored in the following arrangements:

(1) Stored outside

(2) Stored in a detached structure

(3) Stored indoors where arranged and protected in accordance with [20.14.1.2] 12.12.1.2

12.12.1.2 [20.14.1.2]


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Wood pallets, where stored indoors, shall be protected in accordance with one of the following:

(1) Control mode density/area sprinkler protection as specified in [ Table 20.14.1.2(a)] Table12.12.1.2(a) .

(2) CMSA sprinkler protection in accordance with [ Table 20.14.1.2(b)] Table 12.12.1.2(b).

(3) ESFR sprinkler protection in accordance with [ Table 20.14.1.2(c)] Table 12.12.1.2(c) .

(4) Control mode density/area sprinkler protection in accordance with the OH2 curve of Figure 13.2.1existing with a hose stream demand of at least 250 gpm (950 L/min) for a duration of at least60 minutes when pallets are stored no higher than 6 ft (1.8 m) and each pile of no more than fourstacks is separated from other pallet piles by at least 8 ft (2.4 m) of clear space or 25 ft (7.6 m) ofcommodity. The maximum clearance to ceiling of 20 ft (6.1 m) specified in 12.1.3.4 shall [20.6.4] shall not apply to arrangement [20.14.1.2(4)] 12.12.1.2(4).

Table 12.12.1.2(a) Control [Table 20.14.1.2(a)] Control Mode Density/Area Sprinkler Protection forIndoor Storage of Idle Wood Pallets

Type ofSprinkler

Location ofStorage

NominalK-Factor


MaximumCeiling/Roof

HeightSprinklerDensity

Areas ofOperation

ft m ft m gpm/ft2 mm/min ft2 m2


On floor8 (115) or

largerUp to

6Up to1.8

20 6.1 0.20 8.1 3000* 280*

On floor11.2 (160)or larger

Up to8

Up to2.4

30 9.1 0.45 18.3 2500 230

On floor orrack withoutsolid shelves

11.2 (160)or larger

8 to12

2.4 to3.7

30 9.1 0.6 24.4 3500 325

12 to20

3.7 to6.1

30 9.1 0.6 24.4 4500 420


Up to20

Up to6.1

30 9.1 0.6 24.4 2000 185

*The area of sprinkler operation should be permitted to be reduced to 2000 ft2 (186 m2) when sprinklershaving a nominal K-factor of 11.2 or larger are used or if high temperature–rated sprinklers with a nominalK-factor of 8.0 are used.

Table 12.12.1.2(b) [Table 20.14.1.2(b)] CMSA Sprinkler Protection for Indoor Storage of Idle WoodPallets

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

On floorIdle wood

pallets20 6.1

30 9.1

11.2 (160)

Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)

Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)

PendentWet 15 16 1.1

35 1119.6 (280)


40 1219.6 (280)


Table 12.12.1.2(c) [Table 20.14.1.2(c)] ESFR Sprinkler Protection for Indoor Storage of Idle WoodPallets


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Type of Sprinkler(Orientation)

Location ofStorage

NominalK-Factor

MaximumStorage Height

MaximumCeiling/

Roof Height


ft m ft m psi bar

ESFR (pendent)On floor or rackwithout solidshelves

14.0

(200)

25 7.6 30 9.1 50 3.4

25 7.6 32 10 60 4.1

16.8

(240)

25 7.6 30 9.1 35 2.4

25 7.6 32 10 42 2.9

35 11 40 12 52 3.6

22.4

(320)

25 7.6 30 9.1 25 1.7

30 9.1 35 11 35 2.4

35 11 40 12 40 2.7

25.2

(360)

25 7.6 30 9.1 15 1.0

30 9.1 35 11 20 1.4

35 11 40 12 25 1.7

ESFR (upright) On floor 14.0

(200)

20 6.1 30 9.1 50 3.4

20 6.1 35 11 75 5.2

16.8

(240)

20 6.1 30 9.1 35 2.4

20 6.1 35 11 52 3.6

12.12.1.2.1 [20.14.1.2.1]

The maximum clearance to ceiling of 20 ft (6.1 m) specified in 12.1.3.4 [20.6.4] shall not apply toarrangement [20.14.1.2(4)] 12.12.1.2(4) .

12.12.1.3 [20.14.1.3]

Idle wood pallets shall not be stored in racks unless they are protected in accordance with the appropriaterequirements of [ Table 20.14.1.2(a)] Table 12.12.1.2(a) or [ Table 20.14.1.2(c)] Table12.12.1.2(c) . (See Section C.7 .)

12.12.2 [20.14.2] Plastic Pallets.

12.12.2.1 [20.14.2.1]

Plastic pallets shall be permitted to be stored in the following manner:

(1) Plastic pallets shall be permitted to be stored outside.

(2) Plastic pallets shall be permitted to be stored in a detached structure.

(3) Plastic pallets shall be permitted to be stored indoors where arranged and protected in accordancewith the requirements of [20.14.2.2] 12.12.2.2.

12.12.2.2 [20.14.2.2] Protection Criteria for Plastic Pallets Stored Indoors.

12.12.2.2.1 [20.14.2.2.1]

Plastic pallets having a demonstrated fire hazard that is equal to or less than idle wood pallets and is listedfor such equivalency shall be permitted to be protected in accordance with [20.14.1] 12.12.1.

12.12.2.2.2 [20.14.2.2.2]

When specific test data are available, the data shall take precedence in determining the required protectionof idle plastic pallets.


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12.12.2.2.3 [20.14.2.2.3]

Protection with ESFR sprinklers shall be in accordance with the requirements of [ Table 20.14.2.2.3] Table12.12.2.2.3.

Table 12.12.2.2.3 ESFR 3 [Table 20.14.2.2.3] ESFR Sprinkler Protection for Indoor Storage of Idle PlasticPallets


Location ofStorage

NominalK-Factor


MaximumCeiling/Roof

Height


ft m ft m psi bar


14.0

(200)

25 7.6 30 9.1 50 3.4

25 7.6 32 10 60 4.1

16.8

(240)

25 7.6 30 9.1 35 2.4

25 7.6 32 10 42 2.9

35 11 40 12 52 3.6

12.12.2.2.4 [20.14.2.2.4]

Protection with spray sprinklers shall be in accordance with one of the scenarios in[20.14.2.2.4.1] 12.12.2.2.4.1 through [20.14.2.2.4.3] 12.12.2.2.4.3.

12.12.2.2.4.1 [20.14.2.2.4.1]

Where plastic pallets are stored in cutoff rooms, the following shall apply:

(1) The cutoff rooms shall have at least one exterior wall.

(2) The plastic pallet storage shall be separated from the remainder of the building by 3 hour–rated firewalls.

(3) The storage shall be protected by sprinklers designed to deliver 0.6 gpm/ft2 (24.4 mm/min) for the

entire room or by high-expansion foam and sprinklers designed to deliver 0.3 gpm/ft2 (12.2 mm/min)for the entire room.

(4) The storage shall be piled no higher than 12 ft (3.7 m).

(5) Any steel columns shall be protected by 1-hour fireproofing or a sidewall sprinkler directed to one sideof the column at the top or at the 15 ft (4.6 m) level, whichever is lower. Flow from these sprinklersshall be permitted to be omitted from the sprinkler system demand for hydraulic calculations.

12.12.2.2.4.2 [20.14.2.2.4.2]

Where plastic pallets are stored without cutoffs from other storage, the following shall apply:

(1) Maximum storage height of 10 ft (3.0 m)

(2) Maximum ceiling height of 30 ft (9.1 m)

(3) Sprinkler density 0.6 gpm/ft2 over 2000 ft2 (24.4 mm/min over 186 m2)

(4) Minimum sprinkler K-factor of 16.8 (240)

12.12.2.2.4.3 [20.14.2.2.4.3]

Plastic pallets shall have no impact on the required sprinkler protection when stored as follows:

(1) Storage shall be piled no higher than 4 ft (1.2 m).

(2) Sprinkler protection shall employ high temperature–rated sprinklers.

(3) Each pallet pile of no more than two stacks shall be separated from other pallet piles by at least 8 ft(2.4 m) of clear space or 25 ft (7.6 m) of stored commodity.

(4) Minimum ceiling design of OH2 shall be used.

12.12.2.3 [20.14.2.3]


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Idle plastic pallets shall be stored only in racks where protected in accordance with the requirements of[ Table 20.14.2.2.3] Table 12.12.2.2.3.

12.12.2.3.1 [20.14.2.3.1]

When specific test data and a product listing are available, the data shall take precedence in determiningthe required protection of idle plastic pallets stored in racks.

12.12.3 [20.14.3] Idle Pallets Stored on Racks, on Shelves, and Above Doors.

12.12.3.1 [20.14.3.1]

Idle pallets shall not be stored on racks or shelves, except where permitted in [20.14.1.3, 20.14.2.3, and20.14.3.2] 12.12.1.3, 12.12.2.3, and 12.12.3.2.

12.12.3.2 [20.14.3.2]

Idle pallets shall be permitted to be stored on the lowest level of storage only where no storage or shelvesare located above the stored pallets and the applicable protection criteria referenced for on-floor storage inSection 12.12 [20.14] are applied.

12.12.3.3 [20.14.3.3]

Where idle pallet storage is above a door, the idle pallet storage height and ceiling height shall becalculated from the base of storage above the door using the applicable protection criteria referenced inSection Section [20.14] 12.12.

12.12.4 High-Expansion Foam — Reduction in Ceiling Density.

A

[20.9.2.1]

Using CMDA Sprinkler protection criteria for palletized, solid-piled, bin box, shelf, or back-to-back shelfstorage of Class I Through Class IV Commodities, idle pallets, or plastics, where high expansion foamsystems are used in combination with ceiling sprinklers, a reduction in ceiling density to one-half thatrequired for idle pallets shall be permitted without revising the design area, but the density shall be no less

than 0.15 gpm/ft2 (6.1 mm/min).






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Public Input No. 368-NFPA 13-2016 [ Section No. 12.12.1.2 [Excluding any

Sub-Sections] ]


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Wood pallets, where stored indoors, shall be protected in accordance with one of the following:

(1) Control mode density/area sprinkler protection as specified in Table 12.12.1.2(a) .

(2) CMSA sprinkler protection in accordance with Table 12.12.1.2(b).

(3) ESFR sprinkler protection in accordance with Table 12.12.1.2(c).

(4) Control mode density/area sprinkler protection in accordance with the OH2 curve of Figure 13.2.1existing with a hose stream demand of at least 250 gpm (950 L/min) for a duration of at least60 minutes when pallets are stored no higher than 6 ft (1.8 m) and each pile of no more than fourstacks is separated from other pallet piles by at least 8 ft (2.4 m) of clear space or 25 ft (7.6 m) ofcommodity. The maximum clearance to ceiling of 20 ft (6.1 m) specified in 12.1.3.4 shall not apply toarrangement 12.12.1.2(4).

Table 12.12.1.2(a) Control Mode Density/Area Sprinkler Protection for Indoor Storage of Idle Wood Pallets

Type ofSprinkler

Location ofStorage

NominalK-Factor


MaximumCeiling/Roof

HeightSprinklerDensity

Areas ofOperation

ft m ft m gpm/ft2 mm/min ft2 m2


On floor8 (115) or

largerUp to

6Up to1.8

20 6.1 0.20 8.1 3000* 280*


Up to8

Up to2.4

30 9.1 0.45 18.3 2500 230

On floor orrack withoutsolid shelves

11.2 (160)or larger

8 to12

2.4 to3.7

30 9.1 0.6 24.4 3500 325

12 to20

3.7 to6.1

30 9.1 0.6 24.4 4500 420


Up to20

Up to6.1

30 9.1 0.6 24.4 2000 185

*The area of sprinkler operation should be permitted to be reduced to 2000 ft2 (186 m2) when sprinklershaving a nominal K-factor of 11.2 or larger are used or if high temperature–rated sprinklers with a nominalK-factor of 8.0 are used.

Table 12.12.1.2(b) CMSA Sprinkler Protection for Indoor Storage of Idle Wood Pallets

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

On floorIdle wood

pallets20 6.1

30 9.1

11.2 (160)

Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)

Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)


30 9.125.2 (360)


35 1119.6 (280)


40 1219.6 (280)


Table 12.12.1.2(c) ESFR Sprinkler Protection for Indoor Storage of Idle Wood Pallets


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Location ofStorage

NominalK-Factor

MaximumStorage Height

MaximumCeiling/

Roof Height


ft m ft m psi bar


14.0

(200)

25 7.6 30 9.1 50 3.4

25 7.6 32 10 60 4.1

16.8

(240)

25 7.6 30 9.1 35 2.4

25 7.6 32 10 42 2.9

35 11 40 12 52 3.6

22.4

(320)

25 7.6 30 9.1 25 1.7

30 9.1 35 11 35 2.4

35 11 40 12 40 2.7

25.2

(360)

25 7.6 30 9.1 15 1.0

30 9.1 35 11 20 1.4

35 11 40 12 25 1.7

ESFR (upright) On floor 14.0

(200)

20 6.1 30 9.1 50 3.4

20 6.1 35 11 75 5.2

16.8

(240)

20 6.1 30 9.1 35 2.4

20 6.1 35 11 52 3.6


The K25.2 CMSA pendent is a UL listed product that needs to be added to the table to reflect it as a viable option in protecting idle pallets.


Submitter Full Name: Daniel Wake

Organization: Victaulic Company of America

Street Address:

City:

State:

Zip:

Submittal Date: Fri Jun 24 16:12:31 EDT 2016


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13.2.1


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The protection criteria shall be selected from Table 13.2.1 and Figure 13.2.1.

Table 13.2.1 Discharge Criteria for Miscellaneous Storage Up to 12 ft (3.7 m) in Height

CommodityType ofStorage

StorageHeight

MaximumCeilingHeight

DesignCurve

Figure13.2.1

Note

Inside Hose

TotalCombinedInside and

OutsideHose

Duration(minutes)

ft m ft m gpm L/min gpm L/min

Class I to Class IV

Class I Solid-piled,palletized,bin box,shelf,single-,double-,multiple-rowrack, andback-to-backshelfstorage

≤12 ≤3.7 — — OH10, 50,100

0, 190,380

250 950 90

Class II ≤10 ≤3.0 — — OH10, 50,100

0, 190,380

250 950 90

Class II>10to≤12

>3.0to

≤3.7— — OH2

0, 50,100

0, 190,380

250 950 90

Class III ≤12 ≤3.7 — — OH20, 50,100

0, 190,380

250 950 90

Class IV ≤10 ≤3.0 — — OH20, 50,100

0, 190,380

250 950 90

Class IV

Palletized,bin box,shelf, andsolid-piled

>10to≤12

>3.0to

≤3.732 10 OH2

0, 50,100

0, 190,380

250 950 90

Class IV

Class IV

Single-,double-,multiple-rowrack andback-to-backshelfstorage

Rack

>10to≤12

>10to≤12

>3.0to

≤3.7

>3.0to

≤3.7

32

32

10

10

EH1

OH2

1 levelof

in-rack

0, 50,100

0,50,100

0,190,380

0, 190,380

500

500

1900

950

120

90

Group A

Plastic

P

lastic Storage

CartonedUnexpanded

and expanded

Solid-piled, palletized, binbox, shelf, single-,double-, multiple-rowrack, and back-to-backshelf storage

≤5 ≤1.5 — — OH20,

50,100

0,190,380

250 950 90

>5to≤10

>1.5to

≤3.015 4.6 EH1

0,50,100

0,190,380

500 1900 120

>5to≤10

>1.5to

≤3.020 6.1 EH2

0,50,100

0,190,380

500 1900 120

>10to≤12

>3.0to

≤3.717 5.2 EH2

0,50,100

0,190,380

500 1900 120


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Solid-piled, palletized, binbox, shelf, andback-to-back shelfstorage

>10to≤12

>3.0to

≤3.732 10 EH2

0,50,100

0,190,380

500 1900 120

Single-, double-,multiple-row rack

>10to≤12

>3.0to

≤3.732 10 OH2

+

1 level ofin-rack

0, 50, 100 0, 190, 380 250 950 90

Exposed

Unexpandedand expanded

Solid-piled, palletized,bin box, shelf, single-,double-, multiple-rowrack, and back-to-backshelf storage

≤5 ≤1.5 — — OH20,

50,100

0,190,380

250 950 90

Solid-piled, palletized,bin box, shelf, andback-to-back shelfstorage

>5to≤8

>1.5to

≤2.428 8.5 EH2

0,50,100

0,190,380

500 1900 120


>5to≤10

>1.5to

≤3.015 4.6 EH2

0,50,100

0,190,380

500 1900 120

Unexpanded


>5to≤10

>1.5to

≤3.020 6.1 EH2

0,50,100

0,190,380

500 1900 120

ExpandedSingle-, double-,multiple-row rack

>5to≤10

>1.5to

≤3.020 6.1 OH2

+

1 level of in-rack 0, 50, 1000,

190,380

250 950 90

Unexpandedand expanded

Solid-piled, palletized, binbox, shelf, and back-to-backshelf storage

>10to≤12

>3.0to

≤3.717 5.2 EH2

0,50,100

0,190,380

500 1900 120

Single-, double-,multiple-row rack

>10to≤12

>3.0to

≤3.717 5.2 EH2

0,50,100

0,190,380

500 1900 120

>10to≤12

>3.0to

≤3.732 10 OH2

+

1 level ofin-rack

0, 50,100

0, 190, 380 250 950 90

Tire Storage

Tires

On floor, on side>5 to≤12

>1.5 to≤3.7

32 10 EH10, 50,100

0,190,380

500 1900 120

On floor, on tread, or onside

≤5 ≤1.5 — — OH20, 50,100

0,190, 250 950 90


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380

Single-, double-, ormultiple-row racks on treador on side

≤5 ≤1.5 — — OH20, 50,100

0,190,380

250 950 90

Single-row rack, portable,on tread or on side

>5 to≤12

>1.5 to≤3.7

32 10 EH10, 50,100

0,190,380

500 1900 120

Single-row rack, fixed, ontread or on side

>5 to≤12

>1.5 to≤3.7

32 10 EH10, 50,100

0,190,380

500 1900 120

>5 to≤12

>1.5 to≤3.7

32 10 OH2

+

1 level of in-rack 0, 50, 1000, 190,

380250 950 90

Rolled Paper Storage

Heavyweight andmediumweight

On end ≤10 ≤3.0 30 9.1 OH20, 50,100

0, 190,380

250 950 90

Tissue and lightweight On end ≤10 ≤3.0 30 9.1 EH10, 50,100

0, 190,380

250 950 120

Figure 13.2.1 Miscellaneous Storage Up to 12 ft (3.7 m) in Height — Design Curves (see Table13.2.1).


This proposal is offered to provide another option for the protection of Class IV commodities stored on racks to a maximum height of 12 ft. Since an OH2 design with 1 level of in-rack sprinklers is adequate for Miscellaneous Storage of Group A plastic commodities and rubber tires on racks to 12 ft, it should be equally acceptable for the storage of Class IV products.

The Committee Statement to FR No. 295 suggested that guidance for Class I – IV commodities should be included, so this proposal also offers in-rack spacing for Class IV commodities as well. Class I – III is not offered, since as per Table 13.2.1, with an OH2 design criteria in-rack sprinklers would not be needed to storage to 12 ft.




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13.1.4 High Volume Low Speed (HVLS) The installation of HVLS fans in buildings equippedwith sprinklers, including ESFR sprinklers, shall comply with the following:



(3) The vertical clearance from the HVLS fan to sprinkler deflector shall be a minimum of 3 ft(0.9 mm).

(4) All HVLS fans shall be interlocked to shut down immediately upon receiving a waterflowsignal from the alarm system in accordance with the requirements of NFPA 72 .


This section was previously in chapter 11 yet it does not address design. When that section was originally included in the 2010 edition as "Reserved," the annex indicated that there might be design related requirements coming out of the National Fire Protection Research Foundation project on HVLS fans. Now that phases 1 and 2 of that project are complete, it is evident that the system design criteria is not impacted by these fans. Furthermore, as the testing program only addressed storage scenarios it does not appear that there is justification for applying these provisions to non-storage situations. Accordingly, relocating the provisions to chapter 13 will ensure that the standard does contain requirements for storage occupancies while not imposing those same requirements on other occupancies.



Public Input No. 70-NFPA 13-2016 [SectionNo. 11.1.7]

Language is proposed to be relocated from chapter 11 tochapter 13


Submitter Full Name: Chris Born

Organization: Clark Nexsen Inc

Street Address:

City:

State:

Zip:

Submittal Date: Thu Mar 10 12:05:22 EST 2016


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13.3.4.2

HorizontalThe horizontal spacing of in-rack sprinklers shall

not exceed 8 ft (2.4 m).be as follows:

(1) 10 ft (3.0 m) maximum for Class IV Commodities

(2) 10 ft (3.0 m) maximum for Group A plastic Commodities

(3) 8 ft (2.4 m) maximum for rubber tires


This proposal is offered to provide better co-ordination between the in-rack spacing requirements of Chapter 13 with that of Chapters 16 to 18.

During the previous cycle, when the current text of 13.3.4.2 was entered via PI No. 330 and FR No. 295, the substantiation said that the maximum spacing of 8 ft was prescribed in Chapters 17 and 18. However, Chapter 17 only specifies 8 ft spacing across the width for multiple row racks, whereas for sprinklers in the longitudinal flue spaces, Figure 17.2.1.2.1(b), for storage up to 15 ft in height (beyond the height limitations of Chapter 13) indicates sprinklers ever two storage cubes, which represents a maximum spacing of 10 ft (3.0 m).

The Committee Statement to FR No. 295 suggested that guidance for Class I – IV commodities should be included, so this proposal also offers in-rack spacing for Class IV commodities as well. Class I – III is not offered, since as per Table 13.2.1, with an OH2 design criteria in-rack sprinklers would not be needed to storage to 12 ft.




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13.3.4.3.1

If no longitudinal flue is provided in single- and double-row racks, in-rack sprinklers shall be located within12 in. (300 mm) of the center of the rack while not exceeding the maximum spacing.


This is a very severe requirement, especially for single row racks. This provision should be deleted, because there are no parallel requirements in Chapters 16 or 17. In fact in those chapters many of the illustrations, such as Figure 16.3.1.3.1.1(A)(b) and Figure 17.2.1.4(b) show sprinklers between an adjacent wall and a single row rack, rather than within 12 in. of the center of the rack.

The in-rack sprinkler criteria for low piled storage and miscellaneous storage should not be more demanding than the requirements in Chapters 16 and 17 for high piled storage.




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14.3 CMSA Sprinklers for Palletized or Solid-Piled Storage of Class I Through Class IV Commodities.14.3.1 .1 [22.2]


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Protection of palletized and solid-piled storage of Class I through Class IV commodities shall be inaccordance with [ Table 22.2] Table 14.3.1.

Table 14.3.1 CMSA 1 [Table 22.2] CMSA Sprinkler Design Criteria for Palletized and Solid-Piled Storageof Class I Through Class IV Commodities (Encapsulated and Nonencapsulated)

ConfigurationCommodity

Class


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

Palletized Class I or II

25 7.6

30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

35 11

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

Class III

25 7.6

30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

35 11

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

Class IV

20 6.1 30 9.1

11.2 (160)Upright Wet

20 25 1.7

15 50 3.4

16.8 (240)Upright

Wet20 15 1.0

15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1


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Class


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

Solid piled Class I or II

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)Upright

Wet 15 10 0.7

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

Class III

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

Class IV

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 50 3.4

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1


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14.3.2 [22.1.4*]

Protection shall be provided as specified in Table 14.3.1 or the tables in Chapter 22 or appropriate NFPAstandards in terms of minimum operating pressure and the number of sprinklers to be included in thedesign area.

14.3.3 [22.1.5] Open Wood Joist Construction.

14.3.3.1 [22.1.5.1]

Where CMSA sprinklers are installed under open wood joist construction, their minimum operating pressureshall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8 (240) sprinkler.

14.3.3.2 [22.1.5.2]

For CMSA sprinklers, where each joist channel of open wood joist construction is fully firestopped to its fulldepth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 14.3.1 shall the tablein Chapter 22 shall be permitted to be used.

14.3. 4

Hose stream allowance and water supply duration requirements shall be in accordance with Table 14.3.1 .

14.3.5 5 [22.1.5.3] Preaction Systems.

14.3.5.1 [22.1.5.3.1]

For the purpose of using Table 14.3.1 the tables in Chapter 22 , preaction systems shall be classified as drypipe systems.

14.3.6 [22.1.5.4]

Building steel shall not require special protection where Table 14.3.1 are the tables in Chapter 22 areapplied as appropriate for the storage configuration.






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14.3.1


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Protection of palletized and solid-piled storage of Class I through Class IV commodities shall be inaccordance with Table 14.3.1.

Table 14.3.1 CMSA Sprinkler Design Criteria for Palletized and Solid-Piled Storage of Class I ThroughClass IV Commodities (Encapsulated and Nonencapsulated)


Class


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

Palletized Class I or II

25 7.6

30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

30 9.125.2 (360)Pendent

Wet 15 10 0.7

35 11

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

30 9.1 35 1125.2 (360)Pendent

Wet 15 23 1.6

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

35 11 40 1225.2 (360)Pendent

Wet 15 23 1.6

Class III

25 7.6

30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

30 9.125.2 (360)Pendent

Wet 15 10 0.7

35 11

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

30 9.1 35 1125.2 (360)Pendent

Wet 15 23 1.6

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1


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Class


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

35 11 40 1225.2 (360)Pendent

Wet 15 23 1.6

Class IV

20 6.1 30 9.1

11.2 (160)Upright Wet

20 25 1.7

15 50 3.4

16.8 (240)Upright

Wet20 15 1.0

15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 .2 (360)Pendent

Wet 15 10 0. 7

25 7 .6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25.2 (360)Pendent

Wet 15 10 0.7

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

25.2 (360)Pendent

Wet 15 23 1.6

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

25.2 (360)Pendent

Wet 15 23 1.6

Solid piled Class I or II

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 .2 (360)Pendent

Wet 15 10 0. 7

25 7 .6 30 9.1

16.8 (240)Upright

Wet 15 10 0.7

19.6 (280)Pendent

Wet 15 16 1.1

25.2 (360)Pendent

Wet 15 10 0.7

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

25.2 (360)Pendent

Wet 15 23 1.6

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1


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Class


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

25.2 (360)Pendent

Wet 15 23 1.6

Class III

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 .2 (360)Pendent

Wet 15 10 0. 7

25 7 .6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25.2 (360)Pendent

Wet 15 10 0.7

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

25.2 (360)Pendent

Wet 15 23 1.6

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

25.2 (360)Pendent

Wet 15 23 1.6

Class IV

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 50 3.4

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 .2 (360)Pendent

Wet 15 10 0. 7

25 7 .6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25.2 (360)Pendent

Wet 15 10 0.7

30 9.1 35 1119.6 (280)Pendent

Wet 15 25 1.7

25.2 (360)Pendent

Wet 15 23 1.6

35 11 40 1219.6 (280)Pendent

Wet 15 30 2.1

25.2 (360)Pendent

Wet 15 23 1.6


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Added K25.2 CMSA to the charts according to the UL listing data.




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14.3.3 Open Wood Joist Construction.

14.3.3.1

Where CMSA sprinklers are installed under open wood joist construction, their minimum operatingpressure one of the following shall be 50 psi ( provided:

(1) E ach joist channel shall be fully firestopped to its full depth at intervals not exceeding 20 ft (6.1 m).

(2) A minimum pressure of 50 psi ( 3.4 bar) for a K-11.2 (160) sprinkler or 22 psi ( sprinklers.

(3) A minimum pressure of 22 psi ( 1.5 bar) for a K-16.8 (240) sprinkler.

14.3.3.2

For CMSA sprinklers, where each joist channel of open wood joist construction is fully firestopped to its fulldepth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in sprinklers.

(4) The pressure from Table 14.3.1 shall be permitted to be used. for sprinlers with K-factors larger than16.8 (240).


The standard currently has a problem in that it is not mutually exclusive. The statement in section 14.3.3.2 contradicts the statement in section 14.3.3.1. This kind of situation works better as a list of options for the designer, who can pick from the best of four options depending on the sprinkler being used and the water supply. Note that this should happen everywhere that CMSA sprinklers are discussed, which will probably be only once if the reorganization is successful, so this concept has only been submitted once in the storage chapters. If the reorganization is not successful, then this concept will need to be repeated.




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15.1.1* [22.1.5.5] Storage Conditions.

The design of the sprinkler system shall be based on those conditions that routinely or periodically exist in abuilding and create the greatest water demand, which include the following:

(1) Pile Storage arrangement

(2) Commodity class

(3) Storage height

(4) Clearance to ceiling

(5) Pile stability

Array

(6) Ceiling height

(7) Sprinkler k-factor

(8) Sprinkler system type (wet or dry)


This change is offered in support of the NFPA 13 reorganization. It is not intended to introduce any technical change to the standard. The present list is suited to pile storage under CMDA sprinklers. This PI offers a revision to make the paragraph suitable for the proposed CMSA chapter. If this paragraph is also to be used for CMDA and ESFR, further revisions may be needed during the review of the reorganization work.




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15.3 CMSA Sprinklers for Palletized or Solid-Piled Storage of Group A Plastic Commodities. 15.3.1 .1 [22.3]


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Protection of palletized and solid-piled storage of unexpanded and expanded Group A plastic commoditiesshall be in accordance with [ Table 22.3] Table 15.3.1.

Table 15.3.1 CMSA 1 [Table 22.3] CMSA Sprinkler Design Criteria for Palletized and Solid-Piled Storageof Group A Plastic Commodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height K-Factor/OrientationType ofSystem



ft m ft m psi ba

PalletizedCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

UprightWet 25 25 1.7

16.8 (240)


19.6 (280)


25 7.6 30 9.1

16.8 (240)


19.6 (280)


30 9.1 35 1119.6 (280)


35 11 40 1219.6 (280)


Solid piledCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)


16.8 (240)


19.6 (280)


25 7.6 30 9.1

16.8 (240)


19.6 (280)


30 9.1 35 1119.6 (280)


35 11 40 1219.6 (280)


Palletized

Exposedunexpanded

plastics

20 6.1 30 9.1

11.2 (160)


16.8 (240)


25 7.6 30 9.116.8 (240)


Cartoned orexposed

expandedplastics

18 5.5 26 7.9

11.2 (160)


16.8 (240)



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StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height K-Factor/OrientationType ofSystem



ft m ft m psi ba

Solid piled

Cartoned orexposed

unexpandedplastics

20 6.1 30 9.111.2 (160)


25 7.6 30 9.116.8 (240)


15.3.2

Protection shall be provided as specified in Table 15.3.1 or appropriate NFPA standards in terms ofminimum operating pressure and the number of sprinklers to be included in the design area.

15.3.3 Open Wood Joist Construction.

15.3.3.1

Where CMSA sprinklers are installed under open wood joist construction, their minimum operatingpressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8 (240) sprinkler.

15.3.3.2

Where each joist channel of open wood joist construction is fully firestopped to its full depth at intervals notexceeding 20 ft (6.1 m), the lower pressures specified in Table 15.3.1 shall be permitted to be used.

15.3.4 Preaction Systems.

For the purpose of using Table 15.3.1 , preaction systems shall be classified as dry pipe systems.

15.3.5

Building steel shall not require special protection where Table 15.3.1 is applied as appropriate for thestorage configuration.






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16.1.2.2* [20.10.2*]

Protection criteria for Group A plastics shall be permitted for the protection of the same storage height andconfiguration of Class I, II, III, and IV commodities.






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16.1.2.3* [22.1.6*]

The ceiling design criteria for single-, double-, and multiple-row racks in Chapter 16 [22] shall be based onopen rack configurations as defined in 3.9.3.7.4.






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Alternative Protection Scheme B.


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16.1.2.5 Alternative Protection Scheme B. Class I, II, III, IV commodities requiring a greater level ofprotection than is available from the overhead sprinkler system shall be permitted to be protected inaccordance with 16.1.2.5.1 through 16.1.2.5.7.

16.1.2.5.1 Where the storage rack will not be solely dedicated to the storage of commodities requiring agreater level of protection than is available from the overhead sprinkler system, either of the following shallapply:

(1) Extend the protection prescribed by 16.1.2.5 horizontally one pallet load in all directions beyond thecommodity storage area requiring the higher level of protection.

(2) Install a vertical barrier to segregate the commodities requiring the higher level of protection from anyadjacent commodities.

16.1.2.5.2 Commodities that can be protected by the ceiling level sprinkler system shall be permitted tobe stored vertically above and horizontally adjacent to the portions of the storage rack equipped asprescribed by 16.1.2.5.

16.1.2.5.3 Horizontal Barriers. Horizontal barriers shall be installed at every tier level of the dedicatedstorage rack where the rack is equipped with solid shelves.

16.1.2.5.3.1 Where the dedicated storage rack is open-frame, horizontal barriers shall be installed atvertical increments not exceeding 30 ft (9.1 m).

16.1.2.5.3.2 The barriers shall span horizontally so that all flue spaces within the rack bay are covered.

16.1.2.5.3.3 A maximum 3 in. (75 mm) wide gap shall be permitted at rack uprights.

16.1.2.5.3.4 The solid barrier shall be installed on a horizontal plane within a rack, beneath which in-racksprinklers shall

be installed, as follows:

(1) The barrier shall be constructed of minimum 22 gauge (0.7 mm) sheet metal or of minimum 3 ⁄ 8 in.(10 mm) plywood.

(2) The barrier shall extend to both aisle faces of the racks, covering up both the longitudinal and thetransverse flue spaces of the rack bays in which they are installed.

(3) The barrier shall be fitted to within 3 in. (75 mm) of any vertical rack member or other equipment thatwould create an opening, such as vertical in-rack sprinkler pipe drops.

16.1.2.5.4 In-Rack Sprinklers. Intermediate temperature extended coverage CMDA pendent storagesprinklers with a nominal K-factor of K-25.2 (360) shall be installed beneath each horizontal barrier. Thedeflector of the sprinkler shall be located as close to the underside of the horizontal barrier as possible.

16.1.2.5.4.1 Single-Row Racks.

(A) For single-row racks, sprinklers shall be installed at each rack mid-bay as shown in Figure16.1.2.5.4.1(A).

(B) The maximum linear spacing between sprinklers shall not exceed 10 ft (3.1 m).

16.1.2.5.4.2 Double-Row Racks.

(A) For double-row racks, sprinklers shall be installed within the longitudinal flue space at each rackmid-bay as shown in Figure 16.1.2.5.4.2(A).


16.1.2.5.4.3 Multiple-Row Racks.

(A) For multiple-row racks with an overall depth between aisles not exceeding 15 ft 6 in. (4.7 m), analternating sprinkler arrangement shall be installed within adjacent transverse flue spaces as shown inFigure 16.1.2.5.4.3(A).

(B) The maximum linear spacing between sprinklers at the face and at each alternating bay shall notexceed 10 ft (3.1 m).

16.1.2.5.5 The design of an in-rack sprinkler system shall be based on a minimum flow of 138 gpm (520L/min) from the most remote five sprinklers for single-row and double-row racks or the most remote ninesprinklers (three at each face and three in-between) for multiple-row racks.

16.1.2.5.6 The in-rack sprinkler demand shall not be required to be hydraulically balanced with theceiling-level sprinkler system.

16.1.2.5.7 Ceiling Sprinkler System. The ceiling-level sprinkler system shall be designed based on the


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highest commodity hazard not protected by the criteria prescribed by 16.1.2.5.



NFPA_13_Figure_16_1_2_5_4_1_A.pdf New Figure 16.1.2.5.4.1(A)

NFPA_13_Figure_16_1_2_5_4_2_A.pdf New Figure 16.1.2.5.4.2(A)

NFPA_13_16_1_2_5_4_3_A.pdf New Figure 16.1.2.5.4.3(A)


The proposed section adds criteria for extended coverage K-25.2 pendent in-rack sprinklers. The proposed criteria is based on a series of full-scale fire tests conducted at UL. The proposed section mirrors the existing Alternative Protection criteria for consistency.



Public Input No. 426-NFPA 13-2016 [Section No. 16.1.2.4] Title change for clarity






Submitter Full Name: Steven Wolin

Organization: Reliable Automatic Sprinkler Co., Inc.

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16.1.2.4 [20.16] Alternative Protection.

Class I, II, III, IV commodities requiring a greater level of protection than is available from the overheadsprinkler system shall be permitted to be protected in accordance with [20. 16.1. 1 through20.16.1.7] 16.1. 2.4.1 through 16.1.2.4.7.

[NEW 20. 16.1 ]

Class I, II, III, IV and Group A plastic commodities requiring a greater level of protection than is availablefrom the overhead sprinkler system shall be permitted to be protected in accordance with 20 . 16.1.1 through 20.16.1.7.

16.1. 2.4.1 [20.16.1.1]

Where the storage rack will not be solely dedicated to the storage of commodities requiring a greater levelof protection than is available from the overhead sprinkler system, either of the following shall apply:

(1) Extend the protection prescribed by 16 by [20.16] 16 .1.2.4 horizontally one pallet load in all directionsbeyond the commodity storage area requiring the higher level of protection.


16.1.2.4.2 [20.16.1.2]

Commodities that can be protected by the ceiling-level sprinkler system shall be permitted to be storedvertically above and horizontally adjacent to the portions of the storage rack equipped as prescribed by16 by [20.16] 16 .1.2.4.

16.1.2.4.3 [20.16.1.3] Horizontal Barriers.

Horizontal barriers shall be installed at every tier level of the dedicated storage rack where the rack isequipped with solid shelves.

16.1.2.4.3.1 [20.16.1.3.1]

Where the dedicated storage rack is open-frame, horizontal barriers shall be installed at vertical incrementsnot exceeding 12 ft (3.6 m).

16.1.2.4.3.2 [20.16.1.3.2]

The barriers shall span horizontally so that all flue spaces within the rack bay are covered.

16.1.2.4.3.3 [20.16.1.3.3]

A maximum 3 in. (75 mm) wide gap shall be permitted at rack uprights.

16.1.2.4.3.4 [20.16.1.3.4]

The solid barrier shall be installed on a horizontal plane within a rack, beneath which in-rack sprinklers shallbe installed, as follows:

(1) The barrier shall be constructed of minimum 22 gauge (0.7 mm) sheet metal or of minimum 3⁄8 in.(10 mm) plywood.



16.1.2.4.4 [20.16.1.4] In-Rack Sprinklers.

Minimum K-8.0 (K-115) quick-response sprinklers (ceiling-level or in-rack) shall be installed beneath eachhorizontal barrier. The deflector of the sprinkler shall be located as close to the underside of the horizontalbarrier as possible.


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16.1.2.4.4.1 [20.16.1.4.1] Single-Row Racks.

(A)

For single-row racks, sprinklers shall be installed at each rack upright and at each rack mid-bay as shownin [ Figure 20. 16.1. 4.1(A)] Figure 16.1. 2.4.4.1(A) .

Figure 16.1.2.4.4.1(A) Alternative [Figure 20.16.1.4.1(A)] Alternative Protection for Single-RowRacks.

(B)

The maximum linear spacing between sprinklers shall not exceed 5 ft (1.5 m).

16.1.2.4.4.2 [20.16.1.4.2] Double-Row Racks.


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(A)

For double-row racks, sprinklers shall be installed at each rack upright within the longitudinal flue space andat the face of the rack and at the mid-bay face of each rack bay as shown in [ Figure20. 16.1. 4. 2 (A)] Figure 16 .1.2. 4.4.2(A).

Figure 16.1.2.4.4.2(A) Alternative [Figure 20.16.1.4.2(A)] Alternative Protection for Double-RowRacks.

(B)

The maximum linear spacing between sprinklers shall not exceed 5 ft (1.5 m) at the rack face and 10 ft(3.0 m) within the longitudinal flue space.

16.1.2.4.4.3 [20.16.1.4.3] Multiple-Row Racks.


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(A)

For multiple-row racks, an alternating sprinkler arrangement shall be installed within adjacent transverseflue spaces as shown in [ Figure 20. 16.1. 4.3(A)] Figure 16.1. 2.4.4.3(A) , with sprinklers at the faceof each flue space.

Figure 16.1.2.4.4.3(A) Alternative [Figure 20.16.1.4.3(A)] Alternative Protection for Multiple-RowRacks.

(B)

The maximum linear spacing between sprinklers at the face and at each alternating bay shall not exceed 5ft (1.5 m) and shall not exceed 10 ft (3.0 m) between sprinklers at every other bay.

16.1.2.4.5 [20.16.1.5]

The design of an in-rack sprinkler system shall be based on a minimum flow of 60 gpm (230 L/min) from themost remote six sprinklers for single-row racks or the most remote eight sprinklers for both double-row andmultiple-row racks.

16.1.2.4.6 [20.16.1.6]

The in-rack sprinkler demand shall not be required to be hydraulically balanced with the ceiling-levelsprinkler system.

16.1.2.4.7 [20.16.1.7] Ceiling Sprinkler System.

The ceiling-level sprinkler system shall be designed based on the highest commodity hazard not protectedby the criteria prescribed by [20. 16 ] 16 .1.2.4.


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16.1.2.4 Alternative Protection Scheme A .

Class I, II, III, IV commodities requiring a greater level of protection than is available from the overheadsprinkler system shall be permitted to be protected in accordance with 16.1.2.4.1 through 16.1.2.4.7.

16.1.2.4.1




16.1.2.4.2

Commodities that can be protected by the ceiling-level sprinkler system shall be permitted to be storedvertically above and horizontally adjacent to the portions of the storage rack equipped as prescribed by16.1.2.4.

16.1.2.4.3 Horizontal Barriers.


16.1.2.4.3.1


16.1.2.4.3.2


16.1.2.4.3.3


16.1.2.4.3.4

The solid barrier shall be installed on a horizontal plane within a rack, beneath which in-rack sprinklers shallbe installed, as follows:

(1) The barrier shall be constructed of minimum 22 gauge (0.7 mm) sheet metal or of minimum 3⁄8 in.(10 mm) plywood.



16.1.2.4.4 In-Rack Sprinklers.




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(A)

For single-row racks, sprinklers shall be installed at each rack upright and at each rack mid-bay as shownin Figure 16.1.2.4.4.1(A).

Figure 16.1.2.4.4.1(A) Alternative Protection for Single-Row Racks.

(B)




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(A)

For double-row racks, sprinklers shall be installed at each rack upright within the longitudinal flue space andat the face of the rack and at the mid-bay face of each rack bay as shown in Figure 16.1.2.4.4.2(A).

Figure 16.1.2.4.4.2(A) Alternative Protection for Double-Row Racks.

(B)




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(A)

For multiple-row racks, an alternating sprinkler arrangement shall be installed within adjacent transverseflue spaces as shown in Figure 16.1.2.4.4.3(A), with sprinklers at the face of each flue space.

Figure 16.1.2.4.4.3(A) Alternative Protection for Multiple-Row Racks.

(B)

The maximum linear spacing between sprinklers at the face and at each alternating bay shall not exceed 5ft (1.5 m) and shall not exceed 10 ft (3.0 m) between sprinklers at every other bay.

16.1.2.4.5


16.1.2.4.6


16.1.2.4.7 Ceiling Sprinkler System.

The ceiling-level sprinkler system shall be designed based on the highest commodity hazard not protectedby the criteria prescribed by 16.1.2.4.


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Labels the existing Alternative Protection in-rack sprinkler scheme for clarity.









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16.1.3 Movable Racks. [20.5.7.10.1]

Rack storage in movable racks shall be protected in the same manner as multiple-row racks.


Move paragraph 16.1.3 to 20.5.7.10.1 as part of the NFPA 13 reorganization. It revision is not intended to introduce any technical change to the standard.




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16.1.4 Fire Protection of Steel Columns — Columns Within Storage Racks [20.15] Column Protection— Rack Storage and Rubber Tire Storage .

See Section C.10.

16.1.4.1* [20.15.1*]

Where fireproofing of building columns is not provided and storage heights are in excess of 15 ft (4.6 m),protection of building columns located wholly or partially within the rack footprint inclusive of flue spaces orwithin 12 in. (300 mm) of the footprint shall be protected in accordance with one of the following:

(1) In-rack sprinklers

(2) Sidewall sprinklers at the 15 ft (4.6 m) elevation, pointed toward one side of the steel column

(3) Provision of ceiling sprinkler density for a minimum of 2000 ft2 (186 m2) with ordinary 165°F (74°C) orhigh-temperature 286°F (140°C) rated sprinklers as shown in Table 16.1.4.1 [Table 20.15.1] forstorage heights above 15 ft (4.6 m), up to and including 20 ft (6.1 m)

(4) Provision of CMSA or ESFR ceiling sprinkler protection

Table 16.1.4.1 Ceiling 1 [Table 20.15.1] Ceiling Sprinkler Densities for Protection of Steel BuildingColumns


Aisle Width

4 ft (1.2 m) 8 ft (2.4 m)


Class I 0.37 15.1 0.33 13.4

Class II 0.44 17.9 0.37 15.1

Class III 0.49 20.0 0.42 17.1

Class IV 0.68 27.7 0.57 23.2

16.1.4.2 [20.15.1.1]

Where storage heights are in excess of 15 ft (4.6 m) and vertical rack members support the buildingstructure, the vertical rack members shall be protected in accordance with one of the options in 16.1.4.1.

16.1.4.3 [20.15.1.2]

The flow from a column sprinkler(s) shall be permitted to be omitted from the sprinkler system hydrauliccalculations.






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16.1.5 [20.9.2] High-Expansion Foam - Reduction in Ceiling Density . 16.1.5.1 High-Expansion FoamCeiling Sprinkler Density.

[PI Note: See revision to existing 12.12.4 for the proposed 20.9.2.1]

16.1.5.1.1

Where

[20.9.2.2]

Using CMDA Sprinkler Protection Criteria for rack storage where high-expansion foam systems are used in

combination with ceiling sprinklers, the minimum ceiling sprinkler design density shall be 0.2 gpm/ft2

(8.1 mm/min) for Class I, Class II, or Class III commodities or 0.25 gpm/ft2 (10.2 mm/min) for Class IV

commodities for the most hydraulically remote 2000 ft2 (186 m2) operating area.

16.1.5.1.2 [20.9.2.3]

Where high-expansion foam systems are used in combination with ceiling sprinklers, the maximumsubmergence time shall be 7 minutes for Class I, Class II, or Class III commodities and 5 minutes forClass IV commodities.

16.1.5.1.3 [20.9.2.4]

Where high-expansion foam systems are used for storage over 25 ft (7.6 m) high up to and including 35 ft(11 m) high, they shall be used in combination with ceiling sprinklers.

[PI Note: See revision to existing 18.6 for the proposed 20.9.2.5]

16.1.5.1.3.1 [20.9.1.5]

The maximum submergence time for the high-expansion foam shall be 5 minutes for Class I, Class II, orClass III commodities and 4 minutes for Class IV commodities and idle pallet storage .

16.1.5.2 [20.9.2.6]

In-rack sprinklers shall not be required where high-expansion foam systems are used in combination withceiling sprinklers.

16.1.5.3 [20.9.1.3] Detectors for High-Expansion Foam Systems.

16.1.5.3.1 [20.9.1.3.1]

Detectors shall be listed and shall be installed in one of the following configurations:

(1) At the ceiling only where installed at one-half the listed linear spacing [e.g., 15 ft × 15 ft (4.6 m ×4.6 m) rather than at 30 ft × 30 ft (9.1 m × 9.1 m)]; at the ceiling at the listed spacing and in racks atalternate levels

(2) Where listed for rack storage installation and installed in accordance with the listing to provideresponse within 1 minute after ignition using an ignition source that is equivalent to that used in a rackstorage testing program

16.1.5.3.2 [20.9.1.3.2]

Ceiling detectors alone shall not be used where the clearance to ceiling exceeds 10 ft (3.0 m 1 m ) or theheight of the storage exceeds 25 ft (7.6 m).

16.1.5.4 [20.9.1.3.3]

Detectors for preaction systems shall be installed in accordance with [20.9.1.3] 16.1.5.3.


These changes are offered in support of the NFPA 13 reorganization. The changes are not intended to introduce


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any technical change to the standard.




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Sections 16.1.6.1, 16.1.6.2

16.1.6.1

Where solid shelving in single-, double-, and multiple-row racks exceeds 20 ft2 (1.9 m2) in area but does

not exceed 64 ft2 (5.9 m2) in area, sprinklers shall not be required below every shelf but shall be installedat the ceiling and below solid shelves at intermediate levels not more than 6 ft (1.8 m) apart vertically. (SeeSection C.11.)

16.1.6.2

Where solid shelving in single-, double-, and multiple-row racks exceeds 64 ft2 (5.9 m2) in area or wherethe levels of storage exceed 6 ft (1.8 m), sprinklers shall be installed at the ceiling and below each level ofsolid shelving.


This clarifies that in-rack sprinklers are not required below all shelves when only some of the shelves are classified as solid shelving.



Public Input No. 360-NFPA 13-2016 [Sections 17.1.5.1, 17.1.5.2]




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16.1.6.3 [20.5.7.2.4.2]

Where multiple-row racks of any height have no longitudinal flue or where double-row racks with storage up25 ft (7.6 m) in height have no longitudinal flue, the situation shall not be considered solid shelves wheretransverse flues exist at maximum 5 ft (1.5 m) intervals, and additional in-rack sprinklers shall not berequired in accordance with 16 . 1.6.1 and 16.1.6.2 .


Move paragraph 16.1.6.3 to 20.5.7.2.4.2 as part of the NFPA 13 reorganization. It revision is not intended to introduce any technical change to the standard.




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16.1.9.2

Barriers shall be fitted within 2 in 3in . (50 mm 75mm ) horizontally around rack uprights.


Section 16.1.2.4.3.3 allows for a 3 inch gap at rack uprights when providing a horizontal barrier. This section allows for a 2 inch gap. The change is proposed for consistency.




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16.1.10.1

In

[20.5.7.4.1.1]

For Class I to IV and Group A plastic commodities in double-row and multiple-row open racks, alongitudinal (back-to-back clearance between loads) flue space shall not be required for storage up to andincluding 25 ft . (7.6 m). See Section C.13.






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16.1.10.2

Nominal

[20.5.7.4.2.1]

For Class I to IV and Group A plastic commodities a nominal 6 in. (150 mm) transverse flue spaces spacebetween loads and at rack uprights shall be maintained in single-row, double-row, and multiple-row racks.






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16.1.10.3* [20.5.7.4.2.2*]

Random variations in the width of flue spaces or in their vertical alignment shall be permitted.


Move paragraph 16.1.10.3 to 20.5.7.4.2.2 as part of the NFPA 13 reorganization. It revision is not intended to introduce any technical change to the standard; however, an asterisk was added to allow new annex text submitted as a separate PI.




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16.1.11.1.1

Nominal

[20.5.7.4.1.2]

For Class I to IV and Group A plastic commodities nominal 6 in. (150 mm) longitudinal flue spaces shall beprovided in double-row racks for storage over 25 ft . (7.6 m).


Move paragraph 16.1.11.1.1 to 20.5.7.4.1.2 as part of the NFPA 13 reorganization. It revision is not intended to introduce any technical change to the standard.




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[NOTE TO EDITOR: Combine existing Table 16.2.2 CMSA Sprinklers for Rack Storage of Class IThrough Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height. .1 and existing Table16.3.2.1 into the new Table 22.4]

16.2.2.1 [22.4]


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Protection of single-, double-, and multiple-row rack storage for Class I through Class IV commodities shallbe in accordance with [ Table 22.4] Table 16.2.2.1.

Table 16.2.2.1 CMSA 1 [Table 22.4] CMSA Sprinkler Design Criteria for Rack Storage of Class I ThroughClass IV Commodities (Encapsulated and Nonencapsulated) Stored Up to and Including 25 ft (7.6 m) inHeight

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar


Class I or II

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

11.2 (160)Upright

Wet 20 25 1.7

Dry 30 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 30 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

Class III

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6

30 9.1

11.2 (160)Upright

Wet15 + 1 level

of in-rack25 1.7

Dry25 + 1 level

of in-rack25 1.7

16.8 (240)Upright

Wet 15 22 1.5

Dry25 + 1 level

of in-rack15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

35 10.7

11.2 (160)Upright

Wet15 + 1 level

of in-rack25 1.7

Dry25 + 1 level

of in-rack25 1.7

16.8 (240)Upright

Wet15 + 1 level

of in-rack15 1.0

Dry25 + 1 level

of in-rack15 1.0

19.6 (280)Pendent

Wet 15 25 1.7

40 12.219.6 (280)Pendent

Wet 15 30 2.1


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Class IV

20 6.1

25 7.6

11.2 (160)Upright

Wet 15 50 3.4

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1

11.2 (160)Upright

Wet20 50 3.4

15 75 5.2

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6

30 9.1

11.2 (160)Upright

Wet15 + 1 level

of in-rack50 3.4

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

35 10.7

11.2 (160)Upright

Wet

20 + 1 levelof in-rack

50 3.4


75 5.2

16.8 (240)Upright

Wet


22 1.5


35 2.4

19.6 (280)Pendent

Wet 15 25 1.7

40 12.219.6 (280)Pendent

Wet 15 30 2.1

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

16.2.2.2

Where in-rack sprinklers are required by Table 16.2.2.1 , in-rack sprinkler spacing, design pressure, andhydraulic calculation criteria shall be in accordance with the requirements of 16.2.2.

16.2.2. 1.1

CMSA sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected within-rack sprinklers in accordance with 16.1.6 .

16.2.2.1.1.1

Where solid shelves are used, in-rack sprinklers shall be installed in every level below the highest solidshelf.

7

as applicable for the commodity

.


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16.2.2.3

Protection shall be provided as specified in Table 16.2.2.1 or appropriate NFPA standards in terms ofminimum operating pressure and the number of sprinklers to be included in the design area.


16.2.2.4.1


16.2.2.4.2

Where each joist channel of open wood joist construction is fully firestopped to its full depth at intervals notexceeding 20 ft (6.1 m), the lower pressures specified in Table 16.2.2.1 shall be permitted to be used.


For the purpose of using Table 16.2.2.1 , preaction systems shall be classified as dry pipe systems.

16.2.2.6

Building steel shall not require special protection where Table 16.2.2.1 is applied as appropriate for thestorage configuration.

16.2.2.7 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Up toand Including 25 ft (7.6 m) in Height Protected with Control Mode Specific Application Sprinklers at theCeiling.

16.2.2.7.1

Where in-rack sprinklers are required by Table 16.2.2.1 , in-rack sprinklers shall be installed at the first tierlevel at or above one-half of the storage height.

16.2.2.7.2

The minimum of 6 in. (150 mm) vertical clear space shall be maintained between the sprinkler deflectorsand the top of a tier of storage.

(A)

Sprinkler discharge shall not be obstructed by horizontal rack members.

16.2.2.7.3 *

In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues.

16.2.2.7.4

The maximum horizontal distance between in-rack sprinklers shall be 8 ft (2.4 m).

16.2.2.7.5

Where distances between transverse flues exceed the maximum allowable distances, sprinklers shall beinstalled at the intersection of the transverse and longitudinal flues, and additional sprinklers shall beinstalled between transverse flues to meet the maximum distance rules.

16.2.2.7.6

Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacing rules.

16.2.2.7.7 In-Rack Sprinkler 7 In-Rack Sprinkler Water Demand.

The water demand for in-rack sprinklers shall be based on simultaneous operation of the most hydraulicallyremote eight sprinklers.


In-rack sprinklers shall discharge at not less than 15 psi (1.0 bar) for all classes of commodities. (SeeSection C.19.)




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[NOTE TO EDITOR: Combine existing Table 16.3.2

CMSA Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft (7.

6 m) in Height. 16.3.2.1

Protection of single-, double-, and multiple-row rack storage Class I through Class IV commodities shall bein accordance with

with existing Table 16.

3

2 .2.1 to create a new Table 22 . 4]

Table 16.3.2.1 CMSA Sprinkler Design Criteria for Rack Storage of Class I Through Class IVCommodities Stored Over 25 ft (7.6 m) in Height (Encapsulated and Nonencapsulated)

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar


Class I or II

30 9.1 35 10.7

11.2 (160)Upright

Wet20 + 1 level

of in-rack25 1.7

Dry30 + 1 level

of in-rack25 1.7

16.8 (240)Upright

Wet20 + 1 level

of in-rack15 1.0

Dry30 + 1 level

of in-rack15 1.0

19.6 (280)Pendent

Wet 15 25 1.7

35 10.7 40 12.2

11.2 (160)Upright

Dry* 36 55 3.8

16.8 (240)Upright

Dry* 36 22 1.5

19.6 (280)Pendent

Wet 15 30 2.1

Class III orIV

30 9.1 35 10.719.6 (280)Pendent

Wet 15 25 1.7

35 10.7 40 12.219.6 (280)Pendent

Wet 15 30 2.1

*High temperature–rated sprinklers shall be used. Dry system water delivery shall be determined inaccordance with 7.2.3.6 with a maximum time of water delivery of 30 seconds with four sprinklers initiallyopen.

16.3.2.1.1 [22.1.7]

CMSA sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected with in-rack sprinklers in accordance with 16.1.6.


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16.3.2.1.1.1 [22.1.7.1]


16.3.2.

16.3.2. 2

Where in-rack sprinklers are required by Table 16.3.2.1 , in-rack sprinkler spacing, design pressure, andhydraulic calculation criteria shall be in accordance with the requirements of

7

as applicable for the commodity

.

16.3. 2 .3



16.3.2.4.1


16.3.2.4.2




16.3.2.6

Building steel shall not require special protection where Table 16.3.2.1 are applied as appropriate for thestorage configuration.

16.3.2.7 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Over25 ft (7.6 m) in Height Protected with CMSA Sprinklers at the Ceiling.

16.3.2.7.1

Where in-rack sprinklers are required by Table 16.3.2.1 in-rack sprinklers shall be installed at the first tierlevel at or above one-half of the storage height.

16.3.2.7.2


(A)


16.3.2.7.3

In-rack sprinklers shall be a minimum of 3 in. (75 mm) radially from the side of the rack uprights.

16.3.2.7.4


16.3.2.7.5


16.3.2.7.6



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16.3.2.7.7


16.3.2.7.8



The water demand for sprinklers installed in racks shall be based on simultaneous operation of the mosthydraulically remote eight sprinklers.


Sprinklers in racks shall discharge at not less than 15 psi (1.0 bar) for all classes of commodities. (SeeSection C.19 .)






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17.1.2.7* [22.1.8]

Protection criteria for Group A plastics shall be permitted for the protection of the same storage height andconfiguration of Class I, II, III, and IV commodities.






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Alternative Protection Scheme B

17.1.2.10 Alternative Protection Scheme B. The protection of Group A plastic commodities requiring agreater level of protection than is available from the overhead sprinkler system shall be permitted to beprotected in accordance with 17.1.2.10.1 through 17.1.2.10.7.

17.1.2.10.1 Where the storage rack will not be solely dedicated to the storage of commodities requiring agreater level of protection than is available from the overhead sprinkler system, either of the following shallapply:

(1) Extend the protection prescribed by 17.1.2.10 horizontally one pallet load in all directions beyond thecommodity

storage area requiring the higher level of protection.

(2) Install a vertical barrier to segregate the commodities requiring the higher level of protection from anyadjacent

commodities.

17.1.2.10.2 Commodities that can be protected by the ceiling level sprinkler system shall be permitted to bestored vertically above and horizontally adjacent to the portions of the storage rack equipped as prescribedby 17.1.2.10.

17.1.2.10.3 Horizontal Barriers. Horizontal barriers shall be installed at every tier level of the dedicatedstorage rack where the rack is equipped with solid shelves.

17.1.2.10.3.1 Where dedicated storage of cartoned Group A plastic commodity is in open-frame racks,horizontal barriers shall be installed at vertical increments not exceeding 30 ft (9.1 m).

17.1.2.10.3.2 Where dedicated storage of exposed Group A plastic commodity is in open-frame racks,horizontal barriers shall be installed at vertical increments not exceeding 20 ft (6.1 m).

17.1.2.10.3.3 The barriers shall span horizontally so that all flue spaces within the rack bay are covered.

17.1.2.10.3.4 A maximum 3 in. (75 mm) wide gap shall be permitted at rack uprights.

17.1.2.10.3.5 The solid barrier shall be installed on a horizontal plane within a rack, beneath which in-racksprinklers shall be installed, as follows:

(A) The barrier shall be constructed of minimum 22 gauge (0.7 mm) sheet metal or of minimum 3 ⁄ 8 in.(10 mm) plywood.

(B) The barrier shall extend to both ends and both aisle faces of the racks covering up both the longitudinaland transverse

flue spaces of the rack bays in which they are installed.

(C) The barrier shall be fitted to within 3 in. (75 mm) of any vertical rack member or other equipment thatwould create an opening, such as vertical in-rack sprinkler pipe drops.

17.1.2.10.4 In-Rack Sprinklers. Intermediate temperature extended coverage CMDA pendent storagesprinklers with a nominal K-factor of K-25.2 (360) shall be installed beneath each horizontal barrier. Thedeflector of the sprinkler shall be located as close to the underside of the horizontal barrier as possible.


(A) For single-row racks, sprinklers shall be installed at each rack mid-bay as shown in Figure17.1.2.10.4.1(A) for cartoned Group A plastic commodity and Figure 17.1.2.10.4.1(B) for exposed Group Aplastic commodity.



(A) For double-row racks, sprinklers shall be installed within the longitudinal flue space at each rackmid-bay as shown in Figure 17.1.2.10.4.2(A) for cartoned Group A plastic commodity and Figure17.1.2.10.4.2(B) for exposed Group A plastic commodity.


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.


(A) For multiple-row racks with an overall depth between aisles not exceeding 15 ft 6 in. (4.7 m), analternating sprinkler arrangement shall be installed within adjacent transverse flue spaces as shown inFigure 17.1.2.10.4.3(A) for cartoned Group A plastic commodity and Figure 17.1.2.10.4.3(B) for exposedGroup A plastic commodity.

(B) The maximum linear spacing between sprinklers at the face shall not exceed 10 ft (3.1 m) and shall notexceed 10 ft (3.1 m) between sprinklers at every other bay.

17.1.2.10.5 The design of an in-rack sprinkler system shall be based on a minimum flow of 138 gpm (520L/min) from the most remote five sprinklers for single-row and double-row racks or the most remote ninesprinklers (three at each face and three in-between) for multiple-row racks.

17.1.2.10.6 The in-rack sprinkler demand shall not be required to be hydraulically balanced with theceiling-level sprinkler system.

17.1.2.10.7 Ceiling Sprinkler System. The ceiling-level sprinkler system shall be designed based on thehighest commodity hazard not protected by the criteria prescribed by 17.1.2.10.



NFPA_13_Figure_17_1_2_10_4_1_A.pdf

NFPA_13_Figure_17_1_2_10_4_1_B.pdf






The proposed section adds criteria for extended coverage K-25.2 pendent in-rack sprinklers. The proposed criteria is based on a series of full-scale fire tests conducted at UL. The proposed section mirrors the existing Alternative Protection criteria for consistency.










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17.1.2.9 Alternative Protection Scheme A .

The protection of Group A plastic commodities requiring a greater level of protection than is available fromthe overhead sprinkler system shall be permitted to be protected in accordance with 17.1.2.9.1 through17.1.2.9.7.

17.1.2.9.1




17.1.2.9.2

Commodities that can be protected by the ceiling-level sprinkler system shall be permitted to be storedvertically above and horizontally adjacent to the portions of the storage rack equipped as prescribed by17.1.2.9.

17.1.2.9.3 Horizontal Barriers.


17.1.2.9.3.1


17.1.2.9.3.2


17.1.2.9.3.3


17.1.2.9.3.4

The solid barrier shall be installed on a horizontal plane within a rack, beneath which in-rack sprinklersshall be installed, as follows:

(A)

The barrier shall be constructed of minimum 22 gauge (0.7 mm) sheet metal or of minimum 3⁄8 in. (10 mm)plywood.

(B)

The barrier shall extend to both ends and both aisle faces of the racks covering up both the longitudinal andtransverse flue spaces of the rack bays in which they are installed.

(C)

The barrier shall be fitted to within 3 in. (75 mm) of any vertical rack member or other equipment that wouldcreate an opening, such as vertical in-rack sprinkler pipe drops.

17.1.2.9.4 In-Rack Sprinklers.




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(A)

For single-row racks, sprinklers shall be installed at each rack upright and at each rack mid-bay as shownin Figure 17.1.2.9.4.1(A).

Figure 17.1.2.9.4.1(A) Alternative Protection Single-Row Racks.

(B)




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(A)

For double-row racks, sprinklers shall be installed at each rack upright within the longitudinal flue space andat the face of the rack and at the mid-bay face of each rack bay as shown in Figure 17.1.2.9.4.2(A).

Figure 17.1.2.9.4.2(A) Alternative Protection Double-Row Racks.

(B)




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(A)

For multiple-row racks, an alternating sprinkler arrangement shall be installed within adjacent transverseflue spaces, as shown in Figure 17.1.2.9.4.3(A), with sprinklers at the face of each flue space.

Figure 17.1.2.9.4.3(A) Alternative Protection Multiple-Row Racks.

(B)

The maximum linear spacing between sprinklers at the face and each alternating bay shall not exceed 5 ft(1.5 m) and shall not exceed 10 ft (3.0 m) between sprinklers at every other bay.

17.1.2.9.5


17.1.2.9.6


17.1.2.9.7 Ceiling Sprinkler System.

The ceiling-level sprinkler system shall be designed based on the highest commodity hazard not protectedby the criteria prescribed by 17.1.2.9.


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Revised for clarity to identify the Alternative Protection In-rack Scheme.










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Sections 17.1.5.1, 17.1.5.2

17.1.5.1

Where solid shelving in single-, double-, and multiple-row racks exceeds 20 ft2 (1.9 m2) but does not

exceed 64 ft2 (5.9 m2) in area, sprinklers shall not be required below every shelf, but shall be installed atthe ceiling and below solid shelves at intermediate levels not more than 6 ft (1.8 m) apart vertically. (SeeSection C.11.)

17.1.5.2

Where solid shelving in single-, double-, and multiple-row racks exceeds 64 ft2 (5.9 m2) in area or wherethe levels of storage exceed 6 ft (1.8 m), sprinklers shall be installed at the ceiling and below each level ofsolid shelving.


This clarifies that in-rack sprinklers are not required below all shelves when only some of the shelves are classified as solid shelving.



Public Input No. 359-NFPA 13-2016 [Sections 16.1.6.1, 16.1.6.2]




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17.1.8.2

Barriers shall be fitted within 2 in 3 in . (50 mm 75 mm ) horizontally around rack uprights.


Section 17.1.2.9.3.3 allows for a 3 in (75 mm) gap at rack uprights. This section allows for a 2 in. (550 mm) gap around uprights. The change is proposed for consistency.




Affilliation: none

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Public Input No. 173-NFPA 13-2016 [ New Section after 17.2.1.2.1 ]

Table 17.2.1.2.1

As the text of current section 17.2.1.2.1 is brought into the reorganization, simplify it in the following manner:

CommodityStorageheight

MaximumCeiling Height

In-Racks Requirements

Ceiling SprinkClearance to C

10 f

ft (m) ft (m) gpm/ft 2 (m

Group A plasticcommodities in

cartons,encapsulated

5 ft to 10 ft(1.5 m to 3.1

<15 ft (3.1m) Not Required 0.30 gpm/ft2 (1

20 ft (6.1m) Not Required 0.45 gpm/ft2 (1

15 ft (4.6 m),

22 ft (6.7 m) Not Required 0.45 gpm/ft2 (1

25 ft (7.6m)

Not Required 0.60 gpm/ft2 (2

One level of in-rack sprinklers in alternatetransverse flues in accordance with

Figure 25.4.2.21(a)0.30 gpm/ft2 (1

20 ft (6.1 m)

<25 ft (7.6m)

Not Required 1,2 0.60 gpm/ft2 (2


Figure 25.4.2.21(b)0.45 gpm/ft2 (1

One level of in-rack sprinklers in everytransverse flue in accordance with Figure

25.4.2.21(c)0.30 gpm/ft2 (1

27 ft (8.2 m). Not Required 1 0.60 gpm/ft2 (2

30 ft (9.1m)


Figure 25.4.2.21(d)0.45 gpm/ft2 (1

Two levels of in-rack sprinklers staggeredvertically in alternate transverse flues inaccordance with Figure 25.4.2.21(e) or

(f)

0.30 gpm/ft2 (1


25.4.2.21(g)0.30 gpm/ft2 (1

25 ft (7.6 m)

< 30 ft (9.1m)

Not Required 2 0.8 gpm/ft2 (32


25.4.2.21(h)0.45 gpm/ft2 (1

Two levels of in-rack sprinklers staggeredvertically in alternate transverse flues inaccordance with Figure 25.4.2.21(i)

0.30 gpm/ft2 (1

30 ft (9.1m) Not Required 2 0.8 gpm/ft2 (32


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35 ft (10.7m)Two levels of in-rack sprinklers staggeredvertically in alternate transverse flues inaccordance with Figure 25.4.2.21(j)

0.30 gpm/ft2 (1

1) Ceiling-only protection is not permitted for this storage configuration except where K-11.2 or larger spraysprinklers listed for storage use are installed.

2) For the protection of Single and Double Row rack only.

3) Ceiling-only protection shall not be permitted for this storage configuration except where K-16.8 spraysprinklers listed for storage use are installed



Table_21-Option2.pdf This is how the table would look


The concept of simplifying the ceiling sprinkler criteria into a table rather than have the user go to multiple figures is a good one. The table can be simplified in a number of ways. First, the clearance column can be eliminated. The clearance issue is regularly violated anyway since the maximum clearance cannot be kept to 10 ft. The effect of allowing 15 ft or storage and 10 ft of clearance is to allow a 25 ft ceiling height. if the owner then only stores up to 10 ft, they have 15 ft of clearance, which the sprinklers can handle, so there is no problem, but the owner has technically violated the maximum 10 ft clearance rule. It is better to provide the sprinkler protection required based on the ceiling height.

Second, the committee needs to add the row for 30 ft ceiling height to be consistent with the original standard if they want to do this without creating a technical change. Eliminating the row would probably be fine from a fire protection standpoint, but would open up the option of 1 row of in-rack sprinklers with a ceiling density of 0.45 gpm per sq ft, which the 2016 edition does not allow.

Third, the description of the in-rack arrangements are helpful and save the user from flipping back and forth from Chapter 21 to Chapter 25 to see what the effect of the different ceiling sprinkler densities turn out to be.




Street Address:

City:

State:

Zip:



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17.2.1.2.1


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For Group A plastic commodities in cartons, encapsulated or nonencapsulated in single-, double-, andmultiple-row racks and with a clearance to ceiling up to and including 10 ft. (3.0 m), ceiling sprinkler water

demand in terms of density [gpm/ft2 (mm/min)] and area of operation [ft2 (m2)] shall be selected fromFigure 17.2.1.2.1(a) through Figure 17.2.1.2.1(f) .

Figure 17.2.1.2.1(a) Storage 5 ft to 10 ft (1.5 m to 3.0 m) in Height with Up to 10 ft (3.0 m) Clearanceto Ceiling.

Figure 17.2.1.2.1(b) Storage 15 ft (4.6 m) in Height with Up to 10 ft (3.0 m) Clearance to Ceiling.

Notes:

1. Single level of in-rack sprinklers [K-5.6 (80) or K-8.0 (115) operating at 15 psi (1.0 bar) minimum]installed as indicated in the transverse flue spaces.

2. Where sprinklers listed for storage use are installed at the ceiling only and the ceiling height in theprotected area does not exceed 22 ft (6.7 m) and minimum clearance meeting the requirements of

section 8.6.6.1 or 8.7.6 or 8.8.6.1 or 8.8.6.2 of 5 ft (1.5 m ) and the storage height does not exceed 15 ft(4.6 m), the ceiling sprinkler discharge criteria shall be permitted to be reduced to 0.45 gpm/ft2 per 2000

ft2 (18.3 mm/min per 186 m2).

3. Each square represents a storage cube measuring 4 ft to 5 ft (1.2 m to 1.5 m) on a side. Actual loadheights can vary from approximately

18 in. (450 mm) up to 10 ft (3.0 m). Therefore, there could be as few as one load or as many as six orseven loads between in-rack sprinklers that are spaced 10 ft (3.0 m) apart vertically.

Figure 17.2.1.2.1(c) Storage 20 ft (6.1 m) in Height with <5 ft (1.5 m) Clearance to Ceiling.


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Figure 17.2.1.2.1(d) Storage 20 ft (6.1 m) in Height with 5 ft to 10 ft (1.5 m to 3.0 m) Clearance toCeiling.

Figure 17.2.1.2.1(e) Storage 25 ft (7.6 m) in Height with <5 ft (1.5 m) Clearance to Ceiling. (See Note2.)


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Figure 17.2.1.2.1(f) Storage 25 ft (7.6 m) in Height with 5 ft to 10 ft (1.5 m to 3.0 m) Clearance toCeiling. (See Note 2.)


As currently written note 2 always requires a minimum of 5’ clearance. If a minimum 5 ft clearance was not a specific and documented part of the fire test used to develop this figure then this limitation should not be required. The challenges with excess clearances greater than 5 ft is well documented in sections 12.1.3.4.3 through 12.1.3.4.6 but it seems quite unusual that this single note in Figure 17.2.1.2.1(b) requires minimum clearances greater than any other. In Figure 17.2.1.2.1(d) which has the same clearance of 5 ft to 10 ft, in note 2 a minimum of 5 ft clearance is not required. In buildings with ceiling heights lower than the maximum 22’ the minimum 5’ clearance may reduce storage height. An example of this would be a building with a 19ft ceiling will only allow for 14 ft of storage and not 15 ft of storage as stated in the note. If the 5 ft minimum is not absolutely required it should be removed.


Submitter Full Name: John Deutsch

Organization: VFS Fire & Security Services

Street Address:

City:

State:

Zip:



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17.2.1.4*


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Exposed unexpanded Group A plastics protected with control mode density/area sprinklers shall beprotected in accordance with one of the following:

(1) Maximum 10 ft (3.0 m) storage in a maximum 20 ft (6.1 m) high building with ceiling sprinklers

designed for a minimum 0.8 gpm/ft2 (32.6 mm/min) density over 2500 ft2 (232 m2) and no in-racksprinklers required as shown in Figure 17.2.1.4(a)


designed for a minimum 0.45 gpm/ft2 (18.3 mm/min) density over 2000 ft2 (186 m2) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.2.1.4(b)


designed for a minimum 0.3 gpm/ft2 (12.2 mm/min) density over 2000 ft2 (186 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(c)


designed for a minimum 0.45 gpm/ft2 (18.3 mm/min) density over 2000 ft2 (186 m2) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.2.1.4(d)


designed for a minimum 0.3 gpm/ft2 (12.2 mm/min) density over 2000 ft2 (186 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(e)


designed for a minimum 0.6 gpm/ft2 (24.4 mm/min) density over 2000 ft2 (186 m2) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.2.1.4(f)


designed for a minimum 0.45 gpm/ft2 (18.3 mm/min) density over 2000 ft2 (186 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(g)


designed for a minimum 0.8 gpm/ft2 (32.6 mm/min) density over 1500 ft2 (139 m2) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.2.1.4(h)


designed for a minimum 0.6 gpm/ft2 (24.4 mm/min2) density over 1500 ft2 (139 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(i)


designed for a minimum 0.3 gpm/ft2 (12.2 mm/min) density over 2000 ft2 (186 m2) and two levels ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(j)

(11) Maximum 25 ft (7.6 m) storage in a maximum 35 ft (11 m) high building with ceiling sprinklers

designed for a minimum 0.8 gpm/ft2 (32.6 mm/min) density over 1500 ft2 (139 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(k)


designed for a minimum 0.3 gpm/ft2 (12.2 mm/min) density over 2000 ft2 (186 m2) and two levels ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(l)

Figure 17.2.1.4(a) Exposed Nonexpanded Group A Plastic Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with No In-Rack Sprinklers.


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Figure 17.2.1.4(b) Exposed Nonexpanded Group A Plastic Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.2.1.4(c) Exposed Nonexpanded Group A Plastics Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(d) Exposed Nonexpanded Group A Plastics Up to 15 ft (4.6 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.2.1.4(e) Exposed Nonexpanded Group A Plastics Up to 15 ft (4.6 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(f) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.2.1.4(g) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(h) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a30 ft (9.1 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.2.1.4(i) Exposed Nonexpanded Group A Plastics Up to 20 ft in (6.1 m) Height in Up to a30 ft (9.1 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(j) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a30 ft (9.1 m) High Building with Two Levels of Closely Spaced In-Rack Sprinklers.

Change figure to indicate top level of In-rack sprinklers located below top level of storage and leavein-racks at 10 ft level

Figure 17.2.1.4(k) Exposed Nonexpanded Group A Plastics Up to 25 ft (7.6 m) in Height in Up to a35 ft (10.7 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(l) Exposed Nonexpanded Group A Plastics Up to 25 ft (7.6 m) in Height in Up to a35 ft (10.7 m) High Building with Two Levels of Closely Spaced In-Rack Sprinklers.



Figure_17.2.1.4_j_.pdf Revise figure


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The top level of in-rack sprinklers should be installed below the top level of storage. The level of in-rack sprinklers at the 10 ft. level should remain.

Page 735 of 1114


Figure 12.2.1.5(j) indicates that the top level of in-rack sprinklers are installed above the top level of storage. This is incorrect. The top level of in-rack sprinklers should be installed below the top level of storage. The level of in-rack sprinklers at the 10 ft. level should remain.See uoloaded figure


Submitter Full Name: Roland Asp

Organization: National Fire Sprinkler Association

Affilliation: NFSA E&S Committee

Street Address:

City:

State:

Zip:



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17.2.1.4*


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Exposed unexpanded Group A plastics protected with control mode density/area sprinklers shall beprotected in accordance with one of the following:


designed for a minimum 0.8 gpm/ft2 (32.6 mm/min) density over 2500 ft2 (232 m2) and no in-racksprinklers required as shown in Figure 17.2.1.4(a)


designed for a minimum 0.45 gpm/ft2 (18.3 mm/min) density over 2000 ft2 (186 m2) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.2.1.4(b)


designed for a minimum 0.3 gpm/ft2(12.2 mm/min) density over 2000 ft2(186 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(c)


designed for a minimum 0.45 gpm/ft2(18.3 mm/min) density over 2000 ft2(186 m2) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.2.1.4(d)


designed for a minimum 0.3 gpm/ft2(12.2 mm/min) density over 2000 ft2 (186 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(e)


designed for a minimum 0.6 gpm/ft2(24.4 mm/min) density over 2000 ft2(186 m2) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.2.1.4(f)


designed for a minimum 0.45 gpm/ft2(18.3 mm/min) density over 2000 ft2(186 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(g)


designed for a minimum 0.8 gpm/ft2(32.6 mm/min) density over 1500 ft2 (139 m2) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.2.1.4(h)


designed for a minimum 0.6 gpm/ft2 (24.4 mm/min2) density over 1500 ft2 (139 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(i)


designed for a minimum 0.3 gpm/ft2(12.2 mm/min) density over 2000 ft2 (186 m2) and two levels ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(j)


designed for a minimum 0.8 gpm/ft2 (32.6 mm/min) density over 1500 ft2 (139 m2) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(k)


designed for a minimum 0.3 gpm/ft2(12.2 mm/min) density over 2000 ft2 (186 m2) and two levels ofin-rack sprinklers required in every transverse flue as shown in Figure 17.2.1.4(l)

Figure 17.2.1.4(a) Exposed Nonexpanded Group A Plastic Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with No In-Rack Sprinklers.


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Figure 17.2.1.4(b) Exposed Nonexpanded Group A Plastic Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.2.1.4(c) Exposed Nonexpanded Group A Plastics Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(d) Exposed Nonexpanded Group A Plastics Up to 15 ft (4.6 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.2.1.4(e) Exposed Nonexpanded Group A Plastics Up to 15 ft (4.6 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(f) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.2.1.4(g) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(h) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a30 ft (9.1 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.2.1.4(i) Exposed Nonexpanded Group A Plastics Up to 20 ft in (6.1 m) Height in Up to a30 ft (9.1 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(j) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a30 ft (9.1 m) High Building with Two Levels of Closely Spaced In-Rack Sprinklers.

Figure 17.2.1.4(k) Exposed Nonexpanded Group A Plastics Up to 25 ft (7.6 m) in Height in Up to a35 ft (10.7 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.2.1.4(l) Exposed Nonexpanded Group A Plastics Up to 25 ft (7.6 m) in Height in Up to a35 ft (10.7 m) High Building with Two Levels of Closely Spaced In-Rack Sprinklers.



2013_and_2016_NFPA_Standard_13_Figure_17.docxProposed Change to correct an error in the 2013 and 2016 NFPA Standard Figure 17.2.1.4 (j)


The 2013 and 2016 NFPA 13 Standard Figure 17.2.1.4 (j) is in error as it shows the highest level of in-rack sprinklers above the top tier of storage. All other figures provided in the standard show that in-rack sprinklers are never installed above the top tier of storage. Ceiling-level sprinklers provide the protection above the top tier of storage. How effective could this in-rack sprinkler be when located above the top tier of storage? Therefore, as two levels of in-rack sprinklers are required per section 17.2.1.4 (10), I recommend the two levels be shown at the 10-foot and 15-foot levels.



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2013 and 2016 NFPA Standard 13 Figure 17.2.1.4 (j) shows the highest level of in‐rack sprinklers above

the top tier of storage. This is an error as the ceiling level sprinklers provide coverage for the top tier of

storage. Therefore, provide the two levels of required in‐rack sprinklers per 17.2.1.4 (10) to be located

at the 10‐foot and 15‐foot levels.

Page 746 of 1114

Submitter Full Name: Kevin Jorgensen

Organization: City Of Tracy

Street Address:

City:

State:

Zip:

Submittal Date: Wed Dec 23 12:50:56 EST 2015


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[NOTE TO EDITOR: Merge existing Table 17.2.2 CMSA Sprinklers for Rack Storage of Group APlastic Commodities Stored Up to and Including 25 ft (7.6 m) in Height. .1 with existing Table 17.3.2.1for form new Table 22.5]

17.2.2.1 [22.5]


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Protection of single-, double-, and multiple-row rack storage for unexpanded Group A plastic commoditiesshall be in accordance with [ Table 22.5] Table 17.2.2.1.

Table 17.2.2.1 CMSA 1 [Table 22.5] CMSA Sprinkler Design Criteria for Single-, Double-, andMultiple-Row Racks of Group A Plastic Commodities Stored Up and Including 25 ft (7.6 m) in Height

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar


Cartonedunexpanded

plastics

20 6.1

25 7.6

11.2 (160)Upright

Wet 15 50 3.4

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1

11.2 (160)Upright

Wet

Wet

30

20

50

753.4 5.2

16.8 (240)Upright

Wet 15* 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

11.2 (160)Upright

Wet15 + 1 level

of in-rack50 3.4

16.8 (240)Upright

Wet 15* 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 35 11

11.2 (160)Upright

Wet30 + 1 level

of in-rack50 3.4

Wet20 + 1 level

of in-rack75 5.2

16.8 (240)Upright

Wet30 + 1 level

of in-rack22 1.5

Wet20 + 1 level

of in-rack35 2.4

19.6 (280)Pendent

Wet 15 25 1.7

20 6.1 25 7.6

11.2 (160)Upright

Wet 15 50 3.4

Exposedunexpanded

plastics

16.8 (240)Upright

Wet 15 22 1.5

20 6.1 30 9.1

11.2 (160)Upright

Wet 30 50 3.4

Wet 20 75 5.2

16.8 (240)Upright

Wet 15* 22 1.5

25 7.6 30 9.1

11.2 (160)Upright

Wet15 + 1 level

of in-rack50 3.4

16.8 (240)Upright

Wet 15* 22 1.5

25 7.6 35 11 11.2 (160)Upright

Wet30 + 1 level

of in-rack50 3.4


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Wet20 + 1 level

of in-rack75 5.2

16.8 (240)Upright

Wet30 + 1 level

of in-rack22 1.5

Wet20 + 1 level

of in-rack35 2.4

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar

*Minimum 8 ft (2.4 m) aisle.

17.2.2.1.1

CMSA sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected with in-rack sprinklers in accordance with 17.1.5 .

17.2.2.1.1.1


17.2.2.2



17.2.2.3.1

Where CMSA sprinklers are installed under open wood joist construction, firestopping in accordance with17.2.2.3.2 shall be provided or the minimum operating pressure of the sprinklers shall be 50 psi (3.4 bar)for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8 (240) sprinkler.

17.2.2.3.2




17.2.2.5



17.2.2.6.1

In-rack sprinklers shall be installed at the first tier level at or above one-half of the storage height.

17.2.2.6.2


(A)


17.2.2.6.3 *


17.2.2.6.4



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17.2.2.6.5


17.2.2.6.6



The water demand for sprinklers installed in racks shall be based on simultaneous operation of the mosthydraulically remote eight sprinklers.


Sprinklers in racks shall discharge at not less than 15 psi (1.0 bar) for all classes of commodities. (SeeSection C.19 .)






Street Address:

City:

State:

Zip:



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17.2.3.5.4.1

The maximum sprinkler deflector distance below the ceiling shall be 14 in (350mm).


The research supporting this design criteria was done with 14 inch deflector distance from the ceiling.



Public Input No. 460-NFPA 13-2016 [New Section after 17.3.3.5.4]


Submitter Full Name: Louis Guerrazzi


Affilliation: UL/FM/NFSA Standard Review Committee

Street Address:

City:

State:

Zip:



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[NOTE TO EDITOR: Merge existing Table 17. 3. 2 CMSA Sprinklers for Rack Storage of PlasticCommodities Stored Over 25 ft (7 . 6 m) in Height. 17.3. 2.1

Protection of single-, double-, and multiple-row rack storage for cartoned, unexpanded Group A plasticcommodities shall be in accordance with

with existing Table 17.3.2.1 for form new Table 22 . 5]

Table 17.3.2.1 CMSA Sprinkler Design Criteria for Single-, Double-, and Multiple-Row Racks ofGroup A Plastic Commodities Stored Over 25 ft (7.6 m) in Height

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Number ofDesign

Sprinklers


ft m ft m psi bar


Cartoned,unexpanded

plastics

30 9.1 35 1119.6 (280)


35 11 40 1219.6 (280)


17.3.2. 1.1

CMSA sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected with in-rack sprinklers in accordance with 17.1.5 .

17. 3 .2.1.1.1


17.3.2.2


17.3.2.3

The design area shall be a rectangular area having a dimension parallel to the branch lines at least 1.2times the square root of the area protected by the number of sprinklers to be included in the design area.Any fractional sprinkler shall be included in the design area.

17.3.2.4


17.3.2.5 * In-Rack Sprinklers.

(Reserved)






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Street Address:

City:

State:

Zip:



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17.3.2.3

The design area shall be a rectangular area having a dimension parallel to the branch lines at least 1.2times the square root of the area protected by the number of sprinklers to be included in the design area.Any fractional sprinkler shall be included in the design area.


The statement contradicts section 23.4.4.3.1. You are not supposed to use the area actually protected by the number of sprinklers in the design area. instead, you are supposed to base the shape of the design area on the MAXIMUM allowable area of coverage for the sprinklers. For example, consider a situation where 15 sprinklers are in the design area and you are allowed to space the CMSA sprinklers at 130 sq ft per sprinkler, but the sprinklers are actually only spaced at 100 sq ft per sprinkler. To determine the number of sprinklers on a branch line, you are required by 23.4.4.3.1 to take 1.2 times the square root of 1950 sq ft, not 1.2 times the square root of 1500 sq ft. The difference is usually one sprinkler with 6 sprinklers along the branch line if you do it correctly and 5 sprinklers along the branch line if you do it incorrectly.




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17.3.3.5 20.8 * Protection of Furniture classified as Exposed Expanded Group A Plastics.

17 20 .3 8 .3.5. 1

Protection of single-, double-, and multiple-row rack storage of exposed expanded Group A plastics shall bepermitted to be in accordance with 17 20 . 3 8 . 3.5. 2 through 17 20 .3 8 .3 8 .5 4 . 8.

17 20 .3 8 .3.5. 2

The maximum storage height shall be 35 ft (11 m).

17 20 .3 8 .3.5.3

The maximum ceiling height shall be 40 ft (12 m).

17 20 .3 8 .3.5. 4

Sprinklers shall be intermediate temperature–rated ESFR pendent sprinklers with a nominal K-factor ofK-25.2 (360).

17 20 .3 8 .3. 5.5

The design area shall consist of the most hydraulically demanding area of 12 sprinklers.

17 20 .3 8 .3.5. 6

The minimum operating pressure shall be 60 psi (4.1 bar).

17 20 .3 8 .3.5. 7

The minimum aisle width shall be 8 ft (2.4 m).

17 20 .3 8 .3.5. 8

The rack shall have a solid vertical barrier of 3⁄8 in. (9.5 mm) plywood or particleboard, 22 gauge sheetmetal, or equivalent, from face of rack to face of rack, spaced at a maximum 16.5 ft (5.0 m) interval.

17 20 .3 8 .3.5. 8.1

The vertical barrier shall extend from a maximum of 4 in. (102 mm) above the floor to the maximum storageheight.

17 20 .3 8 .3.5. 8.2

The plan area of storage between vertical barriers and aisles shall not exceed 124 ft2 (11.52 m2).

17 20 .3 8 .3.5. 8.3

The vertical barrier shall extend across the longitudinal flue.

17 20 .3 8 .3.5. 8.4

Commodity shall be permitted to extend a nominal 4 in. (102 mm) beyond the vertical barrier at the aisle.



PC_101.pdf 13-PC_101



Duplicating the new information on Exposed Expanded Plastic into Chapter 20 for furniture storage will give greater flexibility to add criteria specific to furniture storage in the future. Due to the nature of furniture storage vs.


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general storage this will be easier to handle the specifics of furniture without having to have multiple asterisks and notes defining this in Chapter 17. Also, for furniture vs. the expanded plastic test commodity, the 12 sprinkler demand is justified based on the testing and the conservative blocked flue arrangements during the test that opened 10 sprinklers.



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17.3.3.5.4.1

The maximum sprinkler deflector distance below the ceiling shall be 14 in (350mm).


The research supporting this design criteria was done with 14 inch deflector distance from the ceiling.



Public Input No. 459-NFPA 13-2016 [New Section after 17.2.3.5.4]


Submitter Full Name: Louis Guerrazzi


Affilliation: UL/FM/NFSA Standards Review Committee

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18.2 [20.15.2] Columns Within Rubber Tire Storage.

18.2.1 [20.15.2.1]

Where fireproofing is not provided, steel columns shall be protected as follows:

(1) Storage exceeding 15 ft through 20 ft (4.6 m through 6.1 m) in height — one sidewall sprinklerdirected to one side of the column at a 15 ft (4.6 m) level

(2) Storage exceeding 20 ft (6.1 m) in height — two sidewall sprinklers, one at the top of the column andthe other at a 15 ft (4.6 m) level, both directed to the side of the column

18.2.2 [20.15.2.2]

The flow from a column sprinkler(s) shall be permitted to be omitted from the sprinkler system hydrauliccalculations.

18.2.3 [20.15.2.3]

The protection specified in 18.2.1(1) [20.15.2.1(1)] and 18.2.1(2) [20.15.2.1(2)] shall not be requiredwhere storage in fixed racks is protected by in-rack sprinklers.

18.2.4 [20.15.2.4]

The protection specified in 18.2.1 [20.15.2.1] shall not be required where ESFR or CMSA sprinklersystems that are approved for rubber tire storage are installed.

18.2.5 [20.15.2.5]

The rate of water supply shall be sufficient to provide the required sprinkler discharge density over therequired area of application plus provision for generation of high-expansion foam and in-rack sprinklerswhere used.






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[NOTE TO EDITOR: This PI addresses the creation of a new 22.6 and the relocation of existing Table18.4 (c) to a new Table 22.6]

[NEW 22.6] Protection of rubber tires with CMSA sprinklers shall be in accordance with Table 22.6

18.4 * Ceiling Systems.


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Sprinkler discharge and area of application shall be in accordance with one of the following:

Table 18.4(a) or Table 18.4(b) for standard spray sprinklers

Table 18.4(c) for CMSA sprinklers

Table 18.4(d) for ESFR sprinklers

Table 18.4(a) Protection Protection Criteria for Rubber Tire Storage Using Control Mode Density/AreaSprinklers

Piling Method

PileHeight

[ft (m)]

Sprinkler DischargeDensity

[gpm/ft2 over ft2

mm/min over m2)]

(see Note 1)

Areas of Application

[ft2 (m2)]

(see Note 1)

OrdinaryTemperature

High

Temperature

(see Note 1)

(1) On-floor storageUp to 5(1.5)

0.19 (0.72) 2000 (186) 2000 (186)

(a) Pyramid piles, on-sideOver 5(1.5) to 12(3.7)

0.30 (1.1) 2500 (232) 2500 (232)

(b) Other arrangements such thatno horizontal channels are formed(see Note 2)

Over 12(3.7) to 18(5.5)

0.60 (2.3) Not allowed 2500 (232)

(2) On-floor storageUp to 5(1.5)

0.19 (0.72) 2000 (186) 2000 (186)

Tires, on-treadOver 5(1.5) to 12(3.7)

0.30 (1.1) 2500 (232) 2500 (232)

(3) Palletized portable rackstorage

Up to 5(1.5)

0.19 (0.72) 2000 (186) 2000 (186)

On-side or on-tread

Over 5(1.5) to 20(6.1)

See Table 18.4(b) — —

Over 20(6.1) to 30(9.1)

0.30 (1.1) plushigh-expansion foam

3000 (280) 3000 (280)

(4) Palletized portable rackstorage, on-side

Up to 5(1.5)

0.19 (0.72) 2000 (186) 2000 (186)

Over 5(1.5) to 20(6.1)

See Table 18.4(b) — —

Over 20(6.1) to 25(7.6)

0.60 (2.2) and Not allowed 5000 (465)

0.90 (3.4) (see Note 3) or Not allowed 3000 (280)

0.75 (2.8) with 1-hourfire-resistive rating of roofand ceiling assembly

Not allowed 4000 (370)

(5) Open portable rack storage,on-side or on-tread

Up to 5(1.5)

0.19 (0.72) 2000 (186) 2000 (186)


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Piling Method

PileHeight

[ft (m)]

Sprinkler DischargeDensity

[gpm/ft2 over ft2

mm/min over m2)]

(see Note 1)

Areas of Application

[ft2 (m2)]

(see Note 1)

OrdinaryTemperature

High

Temperature

(see Note 1)

Over 5(1.5) to 12(3.7)

0.60 (2.2) 5000 (465) 3000 (280)

Over 12(3.7) to 20(6.1)

0.60 (2.2) and Not allowed 5000 (465)



3000 (280) 3000 (280)

(6) Open portable rack storage,laced

Over 12(3.7) to 20(6.1)

0.60 (2.2) and Not allowed 5000 (465)

0.90 (3.4) (see Notes 3 and5)


(7) Single-, double-, andmultiple-row fixed rack storage onpallets, on-side, or on-treadwithout shelves

Up to 5(1.5)

0.19 (0.72) 2000 (186) 2000 (186)

Over 5(1.5) to 20(6.1)

See Table 18.4(b) or

0.40 (1.5) plus one levelin-rack sprinklers or

3000 (280) 3000 (280)


3000 (280) 3000 (280)

Over 20(6.1) to 30(9.1)



(8) Single-, double-, andmultiple-row fixed rack storagewithout pallets or shelves, on-sideor on-tread

Up to 5(1.5)

0.19 (0.72) 2000 (186) 2000 (186)

Over 5(1.5) to 12(3.7)

0.60 (2.2) 5000 (465) 3000 (280)

0.40 (1.5) plus one levelin-rack sprinklers

3000 (280) 3000 (280)

Over 12(3.7) to 20(6.1)

0.60 (2.2) and Not allowed 5000 (465)


0.40 (1.5) plus one levelin-rack sprinklers or

3000 (280) 3000 (280)


3000 (280) 3000 (280)

Over 20(6.1) to 30(9.1)



Notes:

(1) Sprinkler discharge densities and areas of application are based on a maximum clearance to ceiling of10 ft (3.0 m) with the maximum height of storage anticipated.

(2) Laced tires on-floor, vertical stacking on-side (typical truck tires), and off-road tires. Laced tires are notstored to a significant height by this method due to the damage inflicted on the tire (i.e., bead).

(3) Water supply shall fulfill both requirements.

(4) Shelf storage of rubber tires shall be protected as solid rack shelving.


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(5) This protection scheme is for use with K-16.8 (240) or larger control mode sprinklers only. Maximumclearance to ceiling can be increased to 14 ft (4.3 m) with this scheme.

Table 18.4(b) Control Mode Density/Area Sprinklers System Density (gpm/ft2 over ft2) for PalletizedPortable Rack Storage and Fixed Rack Storage of Rubber Tires with Pallets Over 5 ft (1.5 m) to 20 ft(3.7 m) in Height

Storage Height

[ft (m)]

Sprinkler Temperature

High Temperature Ordinary Temperature

>5 to 10 (1.5 to 3.0) 0.32/2000 (1.2/186) 0.32/2000 (1.2/186)

>10 to 12 (3.0 to 3.7) 0.39/2000 (1.5/186) 0.39/2600 (1.5/241)

>12 to 14 (3.7 to 4.3) 0.45/2000 (1.7/186) 0.45/3200 (1.7/300)

>14 to 16 (4.3 to 4.9) 0.5/2300 (1.9/214) 0.5/3700 (1.9/345)

>16 to 18 (4.9 to 5.5) 0.55/2600 (2.1/241) 0.55/4400 (2.1/410)

>18 to 20 (5.5 to 6.1) 0.6/3000 (2.3/280) 0.6/5000 (2.3/465)

Table 18.4(c) Control [Table 22.6] Control Mode Specific Application (CMSA) Protection for RubberTires

Piling Method


MaximumCeiling/Roof

Height K-FactorType ofSystem

Number ofSprinklers

OperatingPressure

ft m ft m

Rubber tire storage,on-side or on-tread, inpalletized portableracks, or open portableracks, or fixed rackswithout solid shelves

25 7.6 32 10 11.2 (160) Wet 15

75 psi

(5.2 bar)

25 7.6 32 1016.8(240) Wet 15

35 psi

(2.4 bar)

Table 18.4(d) Early Suppression Fast-Response (ESFR) Sprinklers for Protection of Rubber Tires (seeNote 1)

Piling MethodPile

Height

MaximumBuildingHeight

NominalK-factor

OrientationNumber ofSprinklers


(see Note 2)

ft m psi bar

Rubber tire storage,on-side or on-tread, inpalletized portableracks, open portableracks, or fixed rackswithout solid shelves

Up to25 ft

(7.6 m)

30 9.1

14.0

(200)

Upright/

pendent

12

(see Note 2)50 3.4

16.8

(240)

Upright/

pendent

12

(see Note 2)35 2.4

22.4

(320)Pendent

12

(see Note 2)25 1.7

25.2

(360)Pendent

12

(see Note 2)15 1.0

Rubber tire storage,on-side, in palletizedportable racks, openportable racks, or fixedracks without solidshelves

Up to25 ft(7.6 m)

35 11

14.0

(200)

Upright/

pendent

12

(see Note 2)75 5.2

16.8

(240)Pendent

12

(see Note 2)52 3.6

22.4

(320)Pendent

12

(see Note 2)35 2.4


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Piling MethodPile

Height

MaximumBuildingHeight

NominalK-factor

OrientationNumber ofSprinklers


(see Note 2)

ft m psi bar

25.2

(360)Pendent

12

(see Note 2)25 1.7

On-tread, on-side, andlaced tires in openportable steel racks orpalletized portableracks

Up to25 ft(7.6 m)

30 9.1

14.0

(200)Pendent

20

(see Notes 3and 4)

75 5.2

16.8

(240)Pendent

20

(see Notes 3and 4)

52 3.6

Rubber tire storage,on-side, in palletizedportable racks

Up to25 ft(7.6 m)

40 1216.8

(240)Pendent 12 52 3.6

Rubber tire storage,on-tread, or laced inopen portable steelracks

Up to25 ft

(7.6 m)40 12

25.2

(360)Pendent 12 40 2.8

On-tread, on-side, andlaced tires in openportable steel racks orpalletized portableracks

Up to30 ft

(9.1 m)40 12

25.2

(360)Pendent 12 75 5.2

Notes:

(1) Wet systems only.

(2) The shape of the design area shall be in accordance with 14.4.3.

(3) Where used in this application, ESFR protection is expected to control rather than to suppress the fire.

(4) The design area shall consist of the most hydraulically demanding area of 20 sprinklers, consisting of

five sprinklers on each of four branch lines. The design shall include a minimum operating area of 1600 ft2

(149 m2).






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18.6 [20.9.2.5] Reduced-Discharge Density.

Where high-expansion foam systems for rubber tire protection are installed in accordance with NFPA 11, a

reduction in sprinkler discharge density to one-half the density specified in Table 18.4(a) or 0.24 gpm/ft2

(9.8 mm/min), whichever is higher, shall be permitted.






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19.1.1.3 [20.5.9.3.2.1]

Horizontal storage of heavyweight or mediumweight paper shall be protected as a closed array.


Move paragraph 19.1.1.3 to 20.5.3.2.1 as part of the NFPA 13 reorganization. It revision is not intended to introduce any technical change to the standard.




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19.1.1.4 [20.4.8.5.1]

Mediumweight paper shall be permitted to be protected as heavyweight paper where wrapped completelyon the sides and both ends, or where wrapped on the sides only with steel bands. Wrapping material shallbe either a single layer of heavyweight paper with a basis weight of 40 lb (18.1 kg) or two layers ofheavyweight paper with a basis weight of less than 40 lb (18.1 kg).






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19.1.1.5 [20.5.8.5.2]

Lightweight paper or tissue paper shall be permitted to be protected as mediumweight paper wherewrapped completely on the sides and both ends, or where wrapped on the sides only with steel bands.Wrapping material shall be either a single layer of heavyweight paper with a basis weight of 40 lb (18.1 kg)or two layers of heavyweight paper with a basis weight of less than 40 lb (18.1 kg).






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19.1.1.6 [20.5.8.3.1]

For purposes of sprinkler system design criteria, lightweight class paper shall be protected as tissue.






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19.1.2.2 CMSA Sprinklers for Protection of Roll Paper Storage.

Where automatic sprinkler system protection utilizes CMSA sprinklers, hydraulic design criteria shall be asspecified in Table 19.1.2.2 .

[22.7]

Protection of roll paper storage with CMSA sprinklers shall be in accordance with Table 22.7.

Table 19.1.2.2 CMSA 2 [Table 22.7] CMSA Sprinklers for Protection of Roll Paper Storage [Numberof Sprinklers at Operating Pressure, psi (bar)]

StorageHeight

MaximumBuildingHeight Nominal

K-FactorType ofSystem

Heavyweight

ClosedArray

Standard Array Open ArrayClosedArray

ft m ft mBanded

orUnbanded

Banded Unbanded Banded UnbandedBanded

orUnbanded

20 6.1 30 9.1 11.2 (160) Wet15 at50(3.4)

15 at50(3.4)

15 at50(3.4)

15 at50(3.4)

NA15 at50(3.4)

20 6.1 30 9.1 11.2 (160) Dry25 at50(3.4)

25 at50(3.4)

25 at50(3.4)

NA NA25 at50(3.4)

26 7.9 60 18 11.2 (160) Wet15 at50(3.4)

15 at50(3.4)

15 at50(3.4)

15 at50(3.4)

NA NA

20 6.1 30 9.116.8(240)

Wet15 at22(1.5)

15 at22(1.5)

15 at22(1.5)

15 at22(1.5)

NA15 at22(1.5)

20 6.1 30 9.116.8(240)

Dry25 at22(1.5)

25 at22(1.5)

25 at22(1.5)

NA NA25 at22(1.5)

26 7.9 60 1816.8(240)

Wet15 at22(1.5)

15 at22(1.5)

15 at22(1.5)

15 at22(1.5)

NA NA

Note: Base design on 25 AS at 75 psi (5.2 bar) for K-11.2 (160) sprinklers or 25 AS at 35 psi (240) forK-16.8 (240) sprinklers when storage is in closed or standard array; other arrays NA.

NA: Not applicable.






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[20.1]

This chapter shall provide the necessary steps for identifying commodity, storage arrangements, storageheights and clearances as well as general protection criteria for storage conditions relative to Chapters 21to 24.

[20.1.1]

Miscellaneous and Low Piled storage, meeting the criteria of Chapter 4 shall be protected in accordancewith the relative occupancy hazard criteria reference in that section.


These are two new paragraphs offered in support of the NFPA 13 reorganization. It is not intended to introduce any technical change to the standard.




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[20.2]

Protection of storage shall follow the following criteria:

(1) Identify the storage commodity class in accordance with 20.3 and 20.4

(2) Identify the method of storage in accordance with 20.5

(3) Establish storage height, building height and associated clearances in accordance with 20.6

(4) Define the general protection criteria that are common to all storage protection options in accordancewith 20.7 through 20.15

(5) Select an appropriate system/sprinkler technology for protection criteria (chapters 21 to 24)

(6) System design and installation in accordance with the remainder of this document


This is a new paragraph offered in support of the NFPA 13 reorganization. It is not intended to introduce any technical change to the standard.




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20.4.1.1

The

[20.12.4.1]

For the protection of baled cotton the total water supply available shall be sufficient to provide therecommended sprinkler discharge density over the area to be protected, plus a minimum of 500 gpm(1900 L/min) for hose streams.






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20.4.1.2

Water

[20.12.4.2]

For the protection of baled cotton, water supplies shall be capable of supplying the total demand forsprinklers and hose streams for not less than 2 hours.






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TITLE OF NEW CONTENT

Protection of Baled Waste Paper Storage

Create a new section to address the hazards of Baled Waste Paper, modeled after Section 20.4 Protectionof Baled Cotton Storage which has a similar fire behavior. FM DS 8-22 is a starting point for specificdensity, area, and other requirements.


I am involved in litigation related to a fire in a baled waste paper warehouse that resulted in the destruction of a 150,000 square foot structure and roughly 9,000 tons of waste paper (dollar value of loss > $10 million). The building was sprinklered, but the system was unable to control the fire and all water resources were exhausted. It is doubtful that the sprinkler system was ever capable of controlling the fire. The site was rural with 100,000+ gallons of fire protection water in a tank on-site. The paper pile was still smoldering five months after the incident.

Ignitions of baled waste paper are frequent enough that the warehouse personnel are trained to pull smoldering bales out of the building and break them up to extinguish them. (The same is true with baled cotton.) The most common cause of ignition is sparks from dragging the steel baling wire against a concrete floor. In my research and analysis, I found that there is no NFPA document that addresses these hazards directly and therefore there are no restrictions on pile sizes, aisle widths, or other construction features.

Under NFPA 13, this product is classified as a Class III commodity. When I compare the density and area required by NFPA 13 to Factory Mutual Data Sheet 8-22 I find that there is a massive discrepancy in the requirements. To be specific, in my case the paper was stacked to a height of 16 feet, with high-temperature sprinkler heads in a dry-pipe system. The peak building height was 36 feet. Under NFPA 13 Chapter 14, the design density was 0.19 gpm/sq. ft. and the design area was 2600 sq. ft., with a water supply duration of 2 hours. Under Factory Mutual DS 8-22, the design density was 0.30 gpm/sq. ft. and the design area was 6500 sq. ft., with a water supply duration of 4 hours. This represents an increase in design density of 58% and an increase in design area of 150%. With hose allowances included, the design flow increases from 994 GPM to 2700 GPM and the water supply requirement increases from to 119,280 to 648,000 gallons.

An important factor to consider is that there is an unstated assumption in the Factory Mutual Data Sheet that once a fire begins in a pile of baled waste paper, that entire pile will be lost, with or without sprinkler protection. Fire protection will only protect the building and nearby piles from destruction. This is consistent with fire experience as I understand it.

While arguably FM data sheets are overly conservative, clearly, baled waste paper represents a different fire hazard from other Class III commodities and requires additional sprinkler density, design area, and water supply duration to control fires effectively.

PROPOSAL:

OPTION A: Create a new section in Chapter 20 for baled waste paper, modeled on the current section 20.4 Protection of Baled Cotton. Baled waste paper has similar fire behavior to baled cotton, and the densities and areas in Table 20.4.2.1 are a bit less than FM DS 8-22.

OPTION B: Upgrade the commodity classification of baled waste paper to something more appropriate. Nothing in NFPA 13 is close to the FM requirements for design area, but Class IV Group A densities are in the neighborhood.

OPTION C: Create a new NFPA Standard for Storage of Baled Waste Paper and provide rules for sprinkler density and design area in that document. This may be the best option because there are other issues related to outdoor storage and building exposure protection that should also be addressed.


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Submitter Full Name: Roger Tate

Organization: Verite Forensic Engineering

Street Address:

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Zip:

Submittal Date: Thu Jan 28 15:24:15 EST 2016


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21.2.1


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Protection of palletized and solid-piled storage of Class I through Class IV and cartoned unexpanded plasticcommodities shall be permitted to be protected in accordance with Table 21.2.1.

Table 21.2.1 Extended Coverage, CMSA [K-factor 25.2 (360)] Sprinkler Design Criteria for Palletized andSolid-Piled Storage of Class I Through Class IV and Cartoned Unexpanded Plastic Commodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem



MaCo

ft m ft m

Palletized andsolid-piled

Class I throughClass IV,encapsulated andnonencapsulated,and cartonednonexpandedplastics

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 630 psi

(2.1 bar)

(33

1

(1

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 630 psi

(2.1 bar)

(44

1

(1

25 7.6 30 9.1

25.2 (360)Upright/

pendent

Wet 630 psi

(2.1 bar)

(33

1

(1

25 7.6 30 9.1

25.2 (360)Upright/

pendent

Wet 630 psi

(2.1 bar)

(44

1

(1

25 7.6 35 11

25.2 (360)Upright/

pendent

Wet 840 psi

(2.7 bar)

(33

1

(1

25 7.6 35 1125.2 (360)

UprightWet 8

40 psi

(2.8 bar)

(44

1

(1

30 9.1 35 11

25.2 (360)Upright/

pendent

Wet 840 psi

(2.8 bar)(33

1


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem



MaCo

ft m ft m

(1

30 9.1 35 1125.2 (360)

UprightWet 8

40 psi

(2.8 bar)

(44

1

(1

30 9.1 35 1125.2 (360)Pendent

Wet 660 psi

(4.1 bar)

14

(44

1

(18


The revisions adds criteria for 14 ft x 14 ft spacing using K25.2 pendent sprinklers.







Street Address:

City:

State:

Zip:



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21.3.1


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Protection of single-, double-, and multiple-row racks without solid shelves of Class I through Class IV andcartoned unexpanded plastic commodities shall be permitted to be protected in accordance with Table21.3.1.

Table 21.3.1 Extended Coverage, CMSA [K-Factor 25.2 (360)] Sprinkler Design Criteria for Single-,Double-, and Multiple-Row Racks Without Solid Shelves of Class I Through Class IV and CartonedUnexpanded Plastic Commodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem



Ma

Co

ft m ft m

Single-,double-, andmultiple-rowracks withoutsolid shelves(no open-topcontainers)

Class I throughClass IV,encapsulated andnonencapsulated,and cartonednonexpandedplastics

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 630 psi

(2.1 bar)

(33

1

(1

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 630 psi

(2.1 bar)

(44

1

(1

25 7.6 30 9.1

25.2 (360)Upright/

pendent

Wet 630 psi

(2.1 bar)

(33

1

(1

25 7.6 30 9.1

25.2 (360)Upright/

pendent

Wet 630 psi

(2.1 bar)

(44

1

(1

25 7.6 35 11

25.2 (360)Upright/

pendent

Wet 840 psi

(2.6 bar)

(33

1

(1

25 7.6 35 1125.2 (360)

UprightWet 8

40 psi

(2.6 bar)

(44

1

(1


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem



Ma

Co

ft m ft m

30 9.1 35 11

25.2 (360)Upright/

pendent

Wet 840 psi

(2.7 bar)

(33

1

(1

30 9.1 35 1125.2 (360)

UprightWet 8

40 psi

(2.6 bar)

(44

1

(1

30 9.1 35 1125.2 (360)Pendent

Wet 660 psi

(4.1 bar)

(44

1

(18


The revisions add criteria for 14 ft x 14 ft spacing with K25.2 EC pendent sprinklers.



Public Input No. 423-NFPA 13-2016 [Section No. 21.2.1] Same criteria




Street Address:

City:

State:

Zip:



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21.4 Sprinkler Design Criteria for Palletized and Solid-Piled Storage of Class I Through Class III forDry Systems

21.4.1 Protection of Class I through Class III stored on single-, double-, or multiple-row racks withoutsolid shelves as solid-piled, palletized, shelf, or bin-box storage arrangements shall be permitted to beprotected in accordance with Table 21.4.1.



Table_21.4.1.xlsx New table data.


Adding a valid design method for protecting dry storage arrangements based on full-scale testing at FM.




Street Address:

City:

State:

Zip:



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Water Delivery

Requirements

ft m ft m Min Max Min Max

25 7.5 30 9.1 20 7 (0.5) 1 A.S. @ 60 sec.

30 9.1 35 10.5 20 7 (0.5) 1 A.S. @ 60 sec.

35 10.5 40 12.2 24 15 (1.0) 4 A.S @ 25 sec.

40 12.2 45 13.7 12 50 (3.5) 4 A.S @ 20 sec.

Maximum

Ceiling/Roof

Height K‐Factor

Orientation

System

Type

Table 21.4.1 CMSA K‐25.2 Upright Standard Coverage Sprinkler Design Criteria for Single‐, Double‐, and Multiple‐Row Racks Without Solid Shelves and Solid‐Piled, Palletized Storage

Arrangement of Class I Through III Commodities for Dry Systems

80 ft2

(7.5m2)

100 ft2

(9.0m2)

Number of

Design

Sprinklers

Minimum

Operating

Pressure

psi/(bar)

Sprinkler Linear

Spacing

Sprinkler Area

Spacing

Solid‐piled, palletized;

single, double and

multiple‐row racks

without solid shelves (no

open top containers)

Class I‐III

encapsulated

and non‐

ecapsulated

25.2 (360)

UprightDry 8ft (2.4m)

12ft

(3.6m)

Maximum

Storage Height

Storage Arrangement

Commodity

Class

Page 787 of 1114


21.5 Sprinkler Protection Criteria for Open-Frame Rack Storage of Class I Through Class IIICommodities for Dry Systems.

Protection of single-, double-, and multiple-row racks without solid shelves of Class I through Class IIIcommodities shall be permitted to be protected in accordance with Table 21.5.1.



Table_21.5.1.xlsx New table data


This will add an approved method for protecting storage with dry systems above 30ft (9.0m).




Street Address:

City:

State:

Zip:



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Water Delivery

Requirements

ft m ft m Min Max Min Max

25 7.5 30 9.1 25 10 (0.7) 1 A.S. @ 60 sec.

30 9.1 35 10.5 24 15 (1.0) 4 A.S @ 25 sec.

35 10.5 40 12.2 24 15 (1.0) 4 A.S @ 25 sec.

40 12.2 45 13.7 12 50 (3.5) 4 A.S @ 20 sec.

12ft

(3.6m)

80 ft2

(7.5m2)

100 ft2

(9.0m2)

Open‐frame

rack single,

double and

multiple‐row

racks without

solid shelves

(no open top

containers)

Class I‐III

encapsulated

and non‐

ecapsulated

25.2 (360)

UprightDry 8ft (2.4m)

Sprinkler Area

Spacing

Table 21.5.1 CMSA K‐25.2 Upright Standard Coverage Sprinkler Protection Criteria for Open‐Frame Rack Storage of Class I Through Class III Commodities for Dry Systems.

Storage

Arrangement

Commodity

Class

Maximum

Storage Height

Maximum

Ceiling/Roof K‐Factor

Orientation

System

Type

Number of

Design

Sprinklers

Operating

Pressure

psi/(bar)

Sprinkler Linear

Spacing

Page 789 of 1114


21.3.3

Protection of Class I through Class IV and cartoned unexpanded plastic commodities stored on single-,double-, or multiple-row racks without solid shelves or solid-piled, palletized, shelf, or bin-box storagearrangements shall be permitted to be protected in accordance with Table 21.3.3.

Table 21.3.3 CMSA K-25.2 Upright Pendent Standard Coverage Sprinkler Design Criteria for Single-,Double-, and Multiple-Row Racks Without Solid Shelves and Solid-Piled, Palletized Storage Arrangementof Class I Through IV and Cartoned Unexpanded Plastic Commodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor

OrientationSystem

Type



ft m ft m

Solid-piled,palletized, andsingle-,double-, andmultiple-rowracks withoutsolid shelves(no open topcontainers)

Class I–IVencapsulated andnonencapsulated,

and cartonednonexpanded

plastics

25 7.6 30 9.125.2 (360)

Upright PendentWet 12

15 psi (1.0bar)


This testing was done with pendent sprinklers, not upright sprinklers. The table was mislabeled when it was put into the 2016 Edition of the standard. Supporting information is available on the NFPA 13 2016 Edition TerraView.


Submitter Full Name: Karl Wiegand

Organization: Globe Fire Sprinkler Corporati

Street Address:

City:

State:

Zip:



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21.3.3

Protection of Class I through Class IV and cartoned unexpanded plastic commodities stored on single-,double-, or multiple-row racks without solid shelves or solid-piled, palletized, shelf, or bin-box storagearrangements shall be permitted to be protected in accordance with Table 21.3.3 .

Table 21.3.3 CMSA K-25.2 Upright Standard Coverage Sprinkler Design Criteria for Single-, Double-, andMultiple-Row Racks Without Solid Shelves and Solid-Piled, Palletized Storage Arrangement of Class IThrough IV and Cartoned Unexpanded Plastic Commodities

Storage Arrangement Commodity Class Maximum Storage Height Maximum Ceiling/Roof Height K-FactorOrientation System Type Number of Design Sprinklers Minimum Operating Pressure Sprinkler LinearSpacing Sprinkler Area Spacing ft m ft m Min Max Min Max Solid-piled, palletized, and single-, double-, andmultiple-row racks without solid shelves (no open top containers) Class I–IV encapsulated andnonencapsulated, and cartoned nonexpanded plastics 25 7.6 30 9.1 25.2 (360) Upright Wet 12 15 psi (1.0

bar) 8 ft (2.4 m) 12 ft (3.6 m) 80 ft 2 (7.5m 2 ) 100 ft 2 (9.0 m 2 )


This is repetitive and incorrect product data. It should be removed.




Street Address:

City:

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Zip:



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23.1.1.1 Submittals shall include:

(A) Plans of the System(s)

(B) Hydraulic Calculations, where systems are required to be calculated

(C) Material Data Sheets for the System Components

(D) Owner's Certificate

23.1.1.2 Submittals shall be permitted to be in elctronic format when approved by the AHJ.

23.1.1.3 A copy of the approved plans shall be given to the owner.

Type your content here ...


There are no minimum requirements that must be included in the actual submittal package.


Submitter Full Name: Cecil Bilbo

Organization: Academy of Fire Sprinkler Tech

Street Address:

City:

State:

Zip:



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23.1.3


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Working plans shall be drawn to an indicated scale, on sheets of uniform size, with a plan of each floor, andshall show those items from the following list that pertain to the design of the system:

(1) Name of owner and occupant.

(2) Location, including street address.

(3) Point of compass.

(4) Full height cross section or schematic diagram, including structural member information if required forclarity and including ceiling construction and method of protection for nonmetallic piping.

(5) Location of partitions.

(6) Location of fire walls.

(7) Occupancy class of each area or room.

(8) Location and size of concealed spaces, closets, attics, and bathrooms.

(9) Any small enclosures in which no sprinklers are to be installed.

(10) Size of city main in street and whether dead end or circulating; if dead end, direction and distance tonearest circulating main; and city main test results and system elevation relative to test hydrant.

(11) Other sources of water supply, with pressure or elevation.

(12) Make, type, model, and nominal K-factor of sprinklers, including sprinkler identification number.

(13) Temperature rating and location of high-temperature sprinklers.

(14) Total area protected by each system on each floor.

(15) Number of sprinklers on each riser per floor.

(16) Total number of sprinklers on each dry pipe system, preaction system, combined dry pipe–preactionsystem, or deluge system.

(17) Approximate capacity in gallons of each dry pipe system.

(18) Pipe type and schedule of wall thickness.

(19) Nominal pipe size and cutting lengths of pipe (or center-to-center dimensions). Where typical branchlines prevail, it shall be necessary to size only one typical line.

(20) Location and size of riser nipples.

(21) Type of fittings and joints and location of all welds and bends. The contractor shall specify on drawingany sections to be shop welded and the type of fittings or formations to be used.

(22) Type and locations of hangers, sleeves, braces, and methods of securing sprinklers when applicable.

(23) All control valves, check valves, drain pipes, and test connections.

(24) Make, type, model, and size of alarm or dry pipe valve.

(25) Make, type, model, and size of preaction or deluge valve.

(26) Kind and location of alarm bells.

(27) Size and location of standpipe risers, hose outlets, hand hose, monitor nozzles, and relatedequipment.

(28) Private fire service main sizes, lengths, locations, weights, materials, point of connection to city main;the sizes, types and locations of valves, valve indicators, regulators, meters, and valve pits; and thedepth that the top of the pipe is laid below grade.

(29) Piping provisions for flushing.

(30) Where the equipment is to be installed as an addition to an existing system, enough of the existingsystem indicated on the plans to make all conditions clear.

(31) For hydraulically designed systems, the information on the hydraulic data nameplate.

(32) A graphic representation of the scale used on all plans.

(33) Name and address of contractor.

(34) Hydraulic reference points shown on the plan that correspond with comparable reference points on the


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hydraulic calculation sheets.

(35) The minimum rate of water application (density or flow or discharge pressure), the design area ofwater application, in-rack sprinkler demand, and the water required for hose streams both inside andoutside.

(36) The total quantity of water and the pressure required noted at a common reference point for eachsystem.

(37) Relative elevations of sprinklers, junction points, and supply or reference points.

(38) If room design method is used, all unprotected wall openings throughout the floor protected.

(39) Calculation of loads for sizing and details of sway bracing.

(40) Provide on plans diagram showing zones of influence used in calculations for seismic bracing.

(41) The setting for pressure-reducing valves.

(42) Information about backflow preventers (manufacturer, size, type).

(43) Information about listed antifreeze solution used (type and amount).

(44) Size and location of hydrants showing size and number of outlets and if outlets are to be equippedwith independent gate valves. Whether hose houses and equipment are to be provided, and by whom,shall be indicated. Static and residual hydrants that were used in flow tests shall be shown.

(45) Size, location, and piping arrangement of fire department connections.

(46) Ceiling/roof heights and slopes not shown in the full height cross section.

(47) Edition year of NFPA 13 to which the sprinkler system is designed.


Suggest changes allows reviewer to review seismic calculations to insure all the proper piping and sizes have been used in the calculations on the plans. By showing zones of influence for each calculation the reviewer insures that all calculations have been done properly and all equipment is sized properly.


Submitter Full Name: Mark A Robertson

Organization: US Army Corps Engineers

Affilliation: Fire Protection Engineer

Street Address:

City:

State:

Zip:

Submittal Date: Wed Apr 20 08:50:45 EDT 2016


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23.1.3


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(8) Occupancy class of each area or room , label and name of all areas or rooms .


























(34) Name, address, phone number(s), and email address(es) of contractor.


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(35) Hydraulic reference points shown on the plan that correspond with comparable reference points on thehydraulic calculation sheets.










(45) Utility plans and/or plumbing plans necessary to show connection from water supply to fire sprinklersystem.





Contact information on the plans is essential. Design details will aid in plan review and inspection.




Affilliation: Self

Street Address:

City:

State:

Zip:



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23.1.3


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(47)Size, location, valve and piping arrangement for means to forward flow at system demand.



CBROWNING_Proposal_2_6-22-16_NFPA_13_2019.docx for Chase Browning


Substantiation: The intention here is to help ensure that the requirement is met in 8.17.4.5.1 to provide a means to forward flow at system demand. The working plans list in chapter 23 has always served as an important reference for AHJs, as well as system layout technicians, for ensuring that key system components and design features are expressed and represented adequately on the working plans. Many of the items on the current list do not apply to all scenarios. The same would apply here – for systems without backflow devices, this item would not apply to that set of plans.


Submitter Full Name: David Hague

Organization: National Fire Protection Assoc

Affilliation: for Chase Browning

Street Address:

City:

State:

Zip:



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NFPA Public Comment Form (For Proposing Revisions to the First Draft)

NOTE: All Public Comments must be received by 5:00 pm EST/EDST on the published Public Comment Closing Date.

For further information on the standards-making process, please contact the Codes and Standards Administration at 617-984-7249 or visit www.nfpa.org/codes.

For technical assistance, please call NFPA at 1-800-344-3555

FOR OFFICE USE ONLY

Log #:

Date Rec’d:

Date 6-22-16 Name Chase Browning Tel. No. 541-601-8045

Company Medford Fire-Rescue Email [email protected]

Street Address 200 S. Ivy #180 City Medford State OR Zip 97501

Please indicate organization represented (if any)

1. (a) NFPA Document Title

NFPA 13 NFPA No. & Year 13 - 2019

(b) Section/Paragraph

2. Identify First Revision and/or Input to which Comment relates: No(s).

Add a new list item to section 23.1.3

2. Public Comment Recommends (check one): new text revised text deleted text

3. Proposed Text of Public Comment (include proposed new or revised wording, or identification of wording to be deleted): [Note: Proposed text should be in legislative format showing proposed changes to the First Draft; i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote wording to be deleted (deleted wording).]

Add an additional line to the current list of 46 items in Section 23.1.3 as follows:

23.1.3 Working plans shall be drawn to an indicated scale, on sheets of uniform size, with a plan of each floor, and shall show those items from the following list that pertain to the design of the system:

(Items 1-46 would remain unchanged here)

(47) Size, location, valve and piping arrangement for means to forward flow at system demand.

4. Statement of Problem and Substantiation for Public Comment: (Note: State the problem that would be resolved by your recommendation; give the specific reason for your Public Comment, including copies of tests, research papers, fire experience, etc. If more than 200 words, it may be abstracted for publication.)

Substantiation: The intention here is to help ensure that the requirement is met in 8.17.4.5.1 to provide a means to forward flow at system demand. The working plans list in chapter 23 has always served as an important reference for AHJs, as well as system layout technicians, for ensuring that key system components and design features are expressed and represented adequately on the working plans. Many of the items on the current list do not apply to all scenarios. The same would apply here – for systems without backflow devices, this item would not apply to that set of plans.

5. Copyright Assignment

(a) I am the author of the text or other material (such as illustrations, graphs) proposed in the Public Comment.

(b) Some or all of the text or other material proposed in this Public Comment was not authored by me. Its source is as follows: (please identify which material and provide complete information on its source)

I hereby grant and assign to the NFPA all and full rights in copyright in this Public Comment (including both the Proposed Text and the Statement of Problem and Substantiation). I understand that I acquire no rights in any publication of NFPA in which this Public Comment in this or another similar or analogous form is used. Except to the extent that I do not have authority to make an assignment in materials that I have identified in (b) above, I hereby warrant that I am the author of this Public Comment and that I have full power and authority to enter into this assignment.

Page 805 of 1114

Signature (Required)

PLEASE USE SEPARATE FORM FOR EACH PUBLIC COMMENT

To: Secretary, Standards Council National Fire Protection Association 1 Batterymarch Park · Quincy, MA 02169-7471 OR

Fax to: (617) 770-3500 OR Email to: [email protected] 7/1/2016

Page 806 of 1114



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23.1.3


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(47) Size, location, valve and piping arrangement for means to forward flow at system demand.


The intention here is to help ensure that the requirement is met in 8.17.4.5.1 to provide a means to forward flow at system demand. The working plans list in chapter 23 has always served as an important reference for AHJs, as well as system layout technicians, for ensuring that key system components and design features are expressed and represented adequately on the working plans. Many of the items on the current list do not apply to all scenarios. The same would apply here – for systems without backflow devices, this item would not apply to that set of plans.


Submitter Full Name: Chase Browning

Organization: Medford Fire Rescue

Street Address:

City:

State:

Zip:



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23.2.1.2 Water Supply Allowance

Water Supply Information shall be reduced by 5% for use in calculating the system.



Because of water usage restrictions and supply fluctuations in many parts of the country, systems should be careful to not be calculated too closely to the available water supply.


Submitter Full Name: Cecil Bilbo

Organization: Academy of Fire Sprinkler Tech

Street Address:

City:

State:

Zip:



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23.4.1.7 The maximum velocity for use in hydraulic calculations shall be 32 ft/sec (9.8 m/sec).


The purpose of this amendment is to limit the velocity in calculations. Other NFPA Codes/Standards have maximum velocity limits. For example in fire fighting piping is 20 ft/sec as NFPA 20 and 35 ft/sec in inspection, test and stationary pumps as NFPA 1963.




Affilliation: Self

Street Address:

City:

State:

Zip:



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23.4.1.x Hydraulically calculated fire sprinkler systems shall be designed to ensure the required systempressure is a minimum of ten percent but not less than ten (10) psi below the available supply pressure.


Most water supplies fluctuate through the day, week, month and year, with the range in pressure movement exceeding several psi. In developing communities the water supply changes greatly over time. The use of a safety factor will aid to overcome these deficiencies.




Affilliation: Self

Street Address:

City:

State:

Zip:



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23.4.4.8.1

Pipe friction loss shall be calculated in accordance with the Hazen–Williams formula with C values fromTable 23.4.4.8.1, as follows:

(1) Pipe, fittings, and devices such as valves, meters, flow switches in pipes 2 in. (50 mm) or less in size,and strainers shall be included, and elevation changes that affect the sprinkler discharge shall becalculated.

(2) Tie-in drain piping shall not be included in the hydraulic calculations.

(3) The loss for a tee or a cross shall be calculated where flow direction change occurs based on theequivalent pipe length of the piping segment in which the fitting is included.

(4) The tee at the top of a riser nipple shall be included in the branch line, the tee at the base of a risernipple shall be included in the riser nipple, and the tee or cross at a cross main–feed main junctionshall be included in the cross main.

(5) Fitting *When using the equivalent feet values from Table 23.4.3.1.1, fitting loss for straight-throughflow in a tee or cross shall not be included.

(6) The loss of reducing elbows based on the equivalent feet value of the smallest outlet shall becalculated.

(7) The equivalent feet value for the standard elbow on any abrupt 90-degree turn, such as thescrew-type pattern shall be used.

(8) The equivalent feet value for the long-turn elbow on any sweeping 90-degree turn, such as a flanged,welded, or mechanical joint-elbow typeshall be used. (See Table 23.4.3.1.1.)

(9) Friction loss shall be excluded for the fitting directly connected to a sprinkler.

(10) Losses through a pressure-reducing valve shall be included based on the normal inlet pressurecondition. Pressure loss data from the manufacturer's literature shall be used.

Table 23.4.4.8.1 Hazen–Williams C Values

Pipe or Tube C Value*

Unlined cast or ductile iron 100

Black steel (dry systems including preaction) 100

Black steel (wet systems including deluge) 120

Galvanized steel (dry systems including preaction) 100

Galvanized steel (wet systems including deluge) 120

Plastic (listed) all 150

Cement-lined cast- or ductile iron 140

Copper tube, brass or stainless steel 150

Asbestos cement 140

Concrete 140

*The authority having jurisdiction is permitted to allow other C values.


Many designers choose to use manufacturer's published equivalent feet friction loss charts instead of the values in Table 23.4.3.1.1 due to lower equivalent feet numbers in the manufacturer's specifications. However, most of the manufacturer's charts include equivalent feet values for flow straight-through flow through a tee fitting. If the manufacturer's charts are being used for friction loss values, then they should be used in their entirety.


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Public Input No. 105-NFPA 13-2016 [New Section after A.23.4.4.7.2]


Submitter Full Name: Ivan Humberson

Organization: City Of Gaithersburg, Md.

Street Address:

City:

State:

Zip:

Submittal Date: Wed Apr 27 15:46:45 EDT 2016


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23.4.4.8.1






(5) Fitting loss for straight-through flow in a tee or cross shall not be included.











Galvanized

Batch galvanized steel (dry systems including preaction) 100

Galvanized

Batch galvanized steel (wet systems including deluge)

Continuous galvanized steel

120

140




Asbestos cement 140

Concrete 140



1. No flaking of zinc coating even in cases of subsequent roll-grooving on site


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2. Smooth and homogeneous surfaces, inside and outside-> decrease the hydraulic pressure loss inside the pipework-> ensure a safe and tight seat of rubber gasketed fittings


Submitter Full Name: Andreas Liebmann

Organization: Wuppermann Stahl GmbH

Street Address:

City:

State:

Zip:



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23.4.4.8.1






(5) Fitting loss for straight-through flow in a tee or cross shall regardless of material type shall not beincluded.











Galvanized steel (dry systems including preaction) 100

Galvanized steel (wet systems including deluge) 120




Asbestos cement 140

Concrete 140



The CPVC manufacturer's installation instructions indicate a loss for a straight through CPVC tee. The intent of this data in their literature is intended to apply to NFPA 13D using the "cookbook" method. This language will make sure it applies for steel, CPVC, Copper, Etc.


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Street Address:

City:

State:

Zip:

Submittal Date: Wed Mar 23 17:40:29 EDT 2016


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23.7 Pipe Schedules.

Pipe schedules shall not be used, except in existing systems and in new systems or extensions to existingsystems described in Chapter 11 . Water supplies shall conform to 11.2.2 .

23.7.1 * General.

23.7.1.1

The pipe schedule sizing provisions shall not apply to hydraulically calculated systems.

23.7.1.2

Sprinkler systems having sprinklers with K-factors other than 5.6 nominal, listed piping material other thanthat covered in Table 6.3.1.1 , extra hazard Group 1 and Group 2 systems, and exposure protectionsystems shall be hydraulically calculated.

23.7.1.3

The number of automatic sprinklers on a given pipe size on one floor shall not exceed the number given in23.7.2 , 23.7.3 , or 23.7.4 for a given occupancy.

23.7.1.4 * Size of Risers.

Each system riser shall be sized to supply all sprinklers on the riser on any one floor as determined by thestandard schedules of pipe sizes in 23.7.2 , 23.7.3 , or 23.7.4 .

23.7.1.5 Slatted Floors, Large Floor Openings, Mezzanines, and Large Platforms.

Buildings having slatted floors or large unprotected floor openings without approved stops shall be treatedas one area with reference to pipe sizes, and the feed mains or risers shall be of the size required for thetotal number of sprinklers.

23.7.1.6 Stair Towers.

Stair towers, or other construction with incomplete floors, if piped on independent risers, shall be treated asone area with reference to pipe sizes.

23.7.2 Schedule for Light Hazard Occupancies.

23.7.2.1 Branch Lines.

23.7.2.1.1

Unless permitted by 23.7.2.1.2 or 23.7.2.1.3 , branch lines shall not exceed eight sprinklers on either sideof a cross main.

23.7.2.1.2

Where more than eight sprinklers on a branch line are necessary, lines shall be permitted to be increased to

nine sprinklers by making the two end lengths 1 in. (25 mm) and 1 1 ⁄ 4 in. (32 mm), respectively, and thesizes thereafter standard.

23.7.2.1.3

Ten sprinklers shall be permitted to be placed on a branch line, making the two end lengths 1 in. (25 mm)

and 1 1 ⁄ 4 in. (32 mm), respectively, and feeding the tenth sprinkler by a 2 1 ⁄ 2 in. (65 mm) pipe.

23.7.2.2 Pipe Sizes.

23.7.2.2.1

Pipe sizes shall be in accordance with Table 23.7.2.2.1 .

Table 23.7.2.2.1 Light Hazard Pipe Schedules

Steel Copper 1 in. (25 mm) 2 sprinklers 1 in.(25 mm) 2 sprinklers 1 1 ⁄ 4 in. (32 mm) 3 sprinklers 1 1 ⁄ 4 in.

(32 mm) 3 sprinklers 1 1 ⁄ 2 in. (40 mm) 5 sprinklers 1 1 ⁄ 2 in. (40 mm) 5 sprinklers 2 in. (50 mm) 10


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sprinklers 2 in. (50 mm) 12 sprinklers 2 1 ⁄ 2 in. (65 mm) 30 sprinklers 2 1 ⁄ 2 in. (65 mm) 40

sprinklers 3 in. (80 mm) 60 sprinklers 3 in. (80 mm) 65 sprinklers 3 1 ⁄ 2 in. (90 mm) 100 sprinklers 3 1 ⁄ 2in. (90 mm) 115 sprinklers 4 in. (100 mm) See Section 8.2 4 in. (100 mm) See Section 8.2

23.7.2.2.2

Each area requiring more sprinklers than the number specified for 3 1 ⁄ 2 in. (90 mm) pipe in Table23.7.2.2.1 and without subdividing partitions (not necessarily fire walls) shall be supplied by mains or riserssized for ordinary hazard occupancies.


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23.7.2.3

Where sprinklers are installed above and below ceilings in accordance with Figure 23.7.2.3(a) throughFigure 23.7.2.3(c) , and such sprinklers are supplied from a common set of branch lines or separate branchlines from a common cross main, such branch lines shall not exceed eight sprinklers above and eightsprinklers below any ceiling on either side of the cross main.

Figure 23.7.2.3(a) Arrangement of Branch Lines Supplying Sprinklers Above and Below Ceiling.

Figure 23.7.2.3(b) Sprinkler on Riser Nipple from Branch Line in Lower Fire Area.

Figure 23.7.2.3(c) Arrangement of Branch Lines Supplying Sprinklers Above, Between, and BelowCeilings.

23.7.2.4

Unless the requirements of 23.7.2.5 are met, pipe sizing up to and including 2 1 ⁄ 2 in. (65 mm) shall beas shown in Table 23.7.2.4 utilizing the greatest number of sprinklers to be found on any two adjacentlevels.


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Table 23.7.2.4 Number of Sprinklers Above and Below Ceiling

Steel Copper 1 in. (25 mm) 2 sprinklers 1 in. (25 mm) 2 sprinklers 1 1 ⁄ 4 in. (32 mm) 4 sprinklers 1 1 ⁄ 4 in.


sprinklers 2 in. (50 mm) 18 sprinklers 2 1 ⁄ 2 in. (65 mm) 50 sprinklers 2 1 ⁄ 2 in. (65 mm) 65 sprinklers

23.7.2.5

Branch lines and cross mains supplying sprinklers installed entirely above or entirely below ceilings shall besized in accordance with Table 23.7.2.2.1 .

23.7.2.6 *

Where the total number of sprinklers above and below a ceiling exceeds the number specified in Table

23.7.2.4 for 2 1 ⁄ 2 in. (65 mm) pipe, the pipe supplying such sprinklers shall be increased to 3 in.(75 mm) and sized thereafter according to the schedule shown in Table 23.7.2.4 for the number ofsprinklers above or below a ceiling, whichever is larger.

23.7.3 Schedule for Ordinary Hazard Occupancies.

23.7.3.1

Unless permitted by 23.7.3.2 or 23.7.3.3 , branch lines shall not exceed eight sprinklers on either side of across main.

23.7.3.2

Where more than eight sprinklers on a branch line are necessary, lines shall be permitted to be increased to

nine sprinklers by making the two end lengths 1 in. (25 mm) and 1 1 ⁄ 4 in. (32 mm), respectively, and thesizes thereafter standard.

23.7.3.3

Ten sprinklers shall be permitted to be placed on a branch line, making the two end lengths 1 in. (25 mm)

and 1 1 ⁄ 4 in. (32 mm), respectively, and feeding the tenth sprinkler by a 2 1 ⁄ 2 in. (65 mm) pipe.

23.7.3.4

Pipe sizes shall be in accordance with Table 23.7.3.4 .

Table 23.7.3.4 Ordinary Hazard Pipe Schedule



sprinklers 2 in. (50 mm) 12 sprinklers 2 1 ⁄ 2 in. (65 mm) 20 sprinklers 2 1 ⁄ 2 in. (65 mm) 25

sprinklers 3 in. (80 mm) 40 sprinklers 3 in. (80 mm) 45 sprinklers 3 1 ⁄ 2 in .(90 mm) 65 sprinklers 3 1 ⁄ 2in. (90 mm) 75 sprinklers 4 in. (100 mm) 100 sprinklers 4 in. (100 mm) 115 sprinklers 5 in. (125 mm) 160sprinklers 5 in. (125 mm) 180 sprinklers 6 in. (150 mm) 275 sprinklers 6 in. (150 mm) 300 sprinklers 8 in.(200 mm) See Section 8.2 8 in. (200 mm) See Section 8.2

23.7.3.5

Where the distance between sprinklers on the branch line exceeds 12 ft (3.7 m) or the distance between thebranch lines exceeds 12 ft (3.7 m), the number of sprinklers for a given pipe size shall be in accordance withTable 23.7.3.5 .

Table 23.7.3.5 Number of Sprinklers — Greater Than 12 ft (3.7 m) Separations

Steel Copper 2 1 ⁄ 2 in. (65 mm) 15 sprinklers 2 1 ⁄ 2 in. (65 mm) 20 sprinklers 3 in. (80 mm) 30

sprinklers 3 in. (80 mm) 35 sprinklers 3 1 ⁄ 2 in. (90 mm) 60 sprinklers 3 1 ⁄ 2 in. (90 mm) 65 sprinklers

Note: For other pipe and tube sizes, see Table 22.5.3.4.

23.7.3.6

Where sprinklers are installed above and below ceilings and such sprinklers are supplied from a commonset of branch lines or separate branch lines supplied by a common cross main, such branch lines shall notexceed eight sprinklers above and eight sprinklers below any ceiling on either side of the cross main.

23.7.3.7


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Pipe sizing up to and including 3 in. (76 mm) shall be as shown in Table 23.7.3.7 in accordance withFigure 23.7.2.3(a) , Figure 23.7.2.3(b) , and Figure 23.7.2.3(c) utilizing the greatest number of sprinklers tobe found on any two adjacent levels.

Table 23.7.3.7 Number of Sprinklers Above and Below a Ceiling



sprinklers 2 in. (50 mm) 18 sprinklers 2 1 ⁄ 2 in. (65 mm) 30 sprinklers 2 1 ⁄ 2 in. (65 mm) 40sprinklers 3 in. (80 mm) 60 sprinklers 3 in. (80 mm) 65 sprinklers

23.7.3.8

Branch lines and cross mains supplying sprinklers installed entirely above or entirely below ceilings shall besized in accordance with Table 23.7.3.4 or Table 23.7.3.5 .

23.7.3.9 *

Where the total number of sprinklers above and below a ceiling exceeds the number specified in Table

23.7.3.7 for 3 in. (75 mm) pipe, the pipe supplying such sprinklers shall be increased to 3 1 ⁄ 2 in.(90 mm) and sized thereafter according to the schedule shown in Table 23.7.3.5 or Table 23.7.3.4 for thenumber of sprinklers above or below a ceiling, whichever is larger.

23.7.3.10

Where the distance between the sprinklers protecting the occupied area exceeds 12 ft (3.7 m) or thedistance between the branch lines exceeds 12 ft (3.7 m), the branch lines shall be sized in accordance witheither Table 23.7.3.5 , taking into consideration the sprinklers protecting the occupied area only, or Table23.7.3.7 , whichever requires the greater size of pipe.

23.7.4 * Extra Hazard Occupancies.

Extra hazard occupancies shall be hydraulically calculated.


Hydraulically calculated systems have proved to be economical and effective for many years. Sufficient time has passed, and existing technology and software has been proved effective to obviate the need for pipe schedules for new systems of any size. Pipe schedule systems should be confines to modifications/additions to existing systems only.FURTHER ACTION: This should be assigned to the Discharge Committee for discussion and rewrite as necessary and relocated to the 2019 edition Chapter 28, Existing System Modifications.




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23.7.2.6 *

Where the total number of sprinklers above and below a ceiling exceeds the number specified in Table23.7.2.4 for 2 1⁄2 in. (65 mm) pipe, the pipe supplying such sprinklers shall be increased to 3 in. (75 mm)and sized thereafter according to the schedule shown in Table 23 Table 23 .7.2.4 2.1 for the number ofsprinklers above or below a ceiling, whichever is larger.


During the previous cycle, PI No. 39 and PC No. 176 endeavored to correct an editorial error in this section, which seems to have originated back when the 2002 edition of the standard was prepared. However, in both the First and Second Draft reports, the text was edited incorrectly. This proposal is offered to again try to correct the error.




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23.7.3.9 *

Where the total number of sprinklers above and below a ceiling exceeds the number specified in Table23.7.3.7 for 3 in. (75 mm) pipe, the pipe supplying such sprinklers shall be increased to 3 1⁄2 in. (90 mm)and sized thereafter according to the schedule shown in Table 23 Table 23 .7.3 2 .5 2.1 or Table 23.7.3.4for the number of sprinklers above or below a ceiling, whichever is larger.


During the previous cycle, the Committee elected to change the reference in Section 23.7.3.9 from the (now) Table 23.7.2.2.1 to the (now) Table 23.7.3.5, due to a mistaken misconception that the original reference was incorrect. However, the reference to Table 23.7.2.2.1 was correct in the first place and it should not have been changed.

Table 23.7.3.5 is the pipe schedule for separations greater than 12 ft and stops at 60 sprinklers. Therefore, when the number (60 for 3” pipe) from Table 23.7.3.5 is exceeded, Table 23.7.3.5 cannot be utilized.

Table 23.7.2.2.1 is the pipe schedule for light hazard. It is applicable for the pipe sizing in the concealed space above, which is a light hazard occupancy, even when the occupancy below is ordinary hazard.

When similar confusion on this matter occurred previously, it was pointed out by the submitter of TCR proposal 13-42 and TCD comment 13-41, leading to the 1987 edition of NFPA 13 (using the older NFPA 13 references) that:

TCR 13-42:“For example, a 3 in. steel pipe which is permitted to supply 40 sprinklers in an Ordinary Hazard area, may supply a total of 60 sprinklers when not more than 40 sprinklers protect the occupied area. … Section 4-4.4.2 classifies these typical ceiling spaces as light hazard and therefore pipe schedule requirements should be revised accordingly in Section 3-6.3.1.”

TCD 13-41:As per A-3-6.3.1 the principle of the Committee's comment saying that the present wording meets their intent implies that this concealed space above the ceiling is classified as ordinary hazard. This contradicts the information in 4-4.4.2 which classifies the typical ceiling space as light hazard. If the classification of the occupied area as ordinary hazard has a bearing on the classification of the ceiling space for pipe sizing purposes, then such a "condition" should be written into 4-4.4.2 as an Exception to the rule. In addition, if the configuration of piping (above and below versus separate branch lines for occupied and concealed areas) has any bearing on the occupancy classification for the concealed space such a condition also should be written into 4-4.4.2.”

The Technical Committee of that time agreed with the submitter, and the reference to the light hazard table has been in this place since then up until the 2016 edition, and it should now be reinstated.




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24.1.5.3

Where listed biocides and/or corrosion inhibitors are used, they shall be compatible with systemcomponents . Where used together, and they shall also be compatible with each other. The biocide and/orcorrosion inhibitor shall be installed in accordance with material compatibility information that is availableas a part of a listing or manufactures published compatibility information.


Presently there is no test standard that exists to determine system compatibility of corrosion bacterial inhibitors. If there is no standard available then manufactures shall have the right to perform internal due diligence to verify system compatibility. Presently Huguenot has performed testing on all know elastomers and CPVC to internally verify compatibility.


Submitter Full Name: Tim O'Leary

Organization: Huguenot Laboratories

Affilliation: I'am President of Huguenot Laboratories

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Submittal Date: Mon Feb 08 14:24:53 EST 2016


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TITLE OF NEW CONTENT


NEW SECTION AND NEW TEXT

24.2.2.3 Computer simulated water flow test data shall be confirmed on site.

Reason statement:

Computer simulated water flow test data is not verified on site. Several factors within the water supplypiping may affect pressures or water availability including partially closed valves or settings on pressureregulators. Without confirming this data, the available water supply may be unacceptable.


We have experienced several problems with adequate water supply using computer simulated flow tests. Most recently, a pressure regulator had to be adjusted to allow additional volume and supply to a "pressure zone" on the public water supply system. The problem was observed during the 2-inch main drain test where the residual pressure was 20-pounds below the required residual pressure at base of riser. Currently, I do not have authority to question the supply based on language in Chapter 25, System Acceptance.

The on site test could be tied to the forward flow test required in Section 25.2.5.2. This would verify pressure, volume and proper operation of backflow prevention assemblies.


Submitter Full Name: Bob Jenkins

Organization: Chesterfield Fire and EMS

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24.2.2.2.1* Where a waterflow test was conducted, the volume and pressure available for use for a fireprotection system shall be determined from the following formula:

P = (P 1 - P 2 )(Q/Q 1 ) 1.85 P 2

24.2.2.1.1 The pressure P shall be what is considered available from the water supply to use for a fireprotection system that will be calculated for a given flow demand of Q.

24.2.2.1.2 The flow Q shall be demand flow of the fire protection system that will be used to calculate theavailable pressure from the water supply (P).

24.2.2.1.3* The variable P 1 shall be the residual pressure measured during the waterflow test while the flow

Q 1 was discharging from the water supply reduced by the specifying engineer or the water utility for daily

and seasonal fluctuations. The reduction shall not be based on 100 year droughts or other extremeconditions.

24.2.2.1.4* The variable P 2 shall be the static pressure measured during the waterflow test reduced by the

specifying engineer or the water utility for daily and seasonal fluctuations. The reduction shall not be basedon 100 year droughts or other extreme conditions.

24.2.2.1.5 The variable Q 1 shall be the flow associated with P 1 .

24.2.2.1.6* Where the specifying engineer or the water utility does not provide the value for P 1 and P 2 ,

see 24.2.2.2.2.

24.2.2.2.2* Where a waterflow test has been conducted and the specifying engineer or the water authoritydoes not provide a value for P 1 and P 2 , the value of for P 1 and P 2 shall be calculated by taking the

static pressure and residual pressure results from the flow test and reducing them by 5%.



PC_233.pdf 13-PC_233



This is one of a series of proposals to make the adjustment to the data from a waterflow test required instead of recommended. If the adjustment is not required, contractors that do the right thing and adjust the data from tests are at a disadvantage from contractors that don't make any adjustment. It is fundamentally wrong to not make an adjustment to the data due to daily and seasonal fluctuations. This proposal makes a simple and easy to understand adjustment that is standardized so that there is no argument over what is supposed to happen. It is the intent to have this be the only adjustment. If the water utility has already performed the adjustment, or if the AHJ has already mandated a safety margin or safety factor to the waterflow data obtained from the test, this adjustment would not apply.



Organization: NFPA


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Public Comment No. 233-NFPA 13-2014 [ New Section after 24.2.2.2 ]

24.2.2.2.1* Where a waterflow test was conducted, the volume and pressure available for use for a fireprotection system shall be determined from the following formula:

P = (P1 - P2)(Q/Q1)1.85 P2

24.2.2.1.1 The pressure P shall be what is considered available from the water supply to use for a fireprotection system that will be calculated for a given flow demand of Q.

24.2.2.1.2 The flow Q shall be demand flow of the fire protection system that will be used to calculate theavailable pressure from the water supply (P).

24.2.2.1.3* The variable P1 shall be the residual pressure measured during the waterflow test while the flow Q1was discharging from the water supply reduced by the specifying engineer or the water utility for daily andseasonal fluctuations. The reduction shall not be based on 100 year droughts or other extreme conditions.

24.2.2.1.4* The variable P2 shall be the static pressure measured during the waterflow test reduced by the

specifying engineer or the water utility for daily and seasonal fluctuations. The reduction shall not be based on100 year droughts or other extreme conditions.

24.2.2.1.5 The variable Q1 shall be the flow associated with P1.

24.2.2.1.6* Where the specifying engineer or the water utility does not provide the value for P1 and P2, see

24.2.2.2.2.

24.2.2.2.2* Where a waterflow test has been conducted and the specifying engineer or the water authority doesnot provide a value for P1 and P2, the value of for P1 and P2 shall be calculated by taking the static pressure

and residual pressure results from the flow test and reducing them by 5%.



Water_Supply_Adjustment_Proposal-E_S-13.pdf Whole file with equations and figures ✓



Related Item






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Committee Statement

CommitteeAction:

Rejected but held

Resolution: The subject has been held due to the anticipated FPRF report on water supply adjustments. Theproposed 5% adjustment is not substantiated with technical information, and the TC is anticipating thatthe FPRF project will yield technical data that substantiates any proposed adjustment factor.


I, Kenneth Isman, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Comment (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Comment in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Comment and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Kenneth Isman, and I agree to be legally bound by the above Copyright Assignment and the terms andconditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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NFSA Comment to NFPA 13 on Waterflow Test Adjustments

1) Delete A.24.2.2.2 A.24.2.2.2 An adjustment to the waterflow test data to account for daily and seasonal fluctuations, possible interruption by flood or ice conditions, large simultaneous industrial use, future demand on the water supply system, or any other condition that could affect the water supply should be made as appropriate.

2) Insert a new 24.2.2.2.1, 24.2.2.2.2 and annex notes as follows: 24.2.2.2.1* Where a waterflow test was conducted, the volume and pressure available for use for a fire protection system shall be determined from the following formula:

( ) 2

85.1

121 P

QQPPP +

−=

24.2.2.1.1 The pressure P shall be what is considered available from the water supply to use for a fire protection system that will be calculated for a given flow demand of Q. 24.2.2.1.2 The flow Q shall be demand flow of the fire protection system that will be used to calculate the available pressure from the water supply (P). 24.2.2.1.3* The variable P1 shall be the residual pressure measured during the waterflow test while the flow Q1 was discharging from the water supply reduced by the specifying engineer or the water utility for daily and seasonal fluctuations. The reduction shall not be based on 100 year droughts or other extreme conditions. 24.2.2.1.4* The variable P2 shall be the static pressure measured during the waterflow test reduced by the specifying engineer or the water utility for daily and seasonal fluctuations. The reduction shall not be based on 100 year droughts or other extreme conditions. 24.2.2.1.5 The variable Q1 shall be the flow associated with P1. 24.2.2.1.6* Where the specifying engineer or the water utility does not provide the value for P1

and P2, see 24.2.2.2.2. 24.2.2.2.2* Where a waterflow test has been conducted and the specifying engineer or the water authority does not provide a value for P1 and P2, the value of for P1 and P2 shall be calculated by taking the static pressure and residual pressure results from the flow test and reducing them by 5%. A.24.2.2.2.1 Consider the following example. A waterflow test is conducted at a location where a city water main is going to be tapped for a new sprinkler system. During the test, the static pressure is measured at 70 psi, the residual pressure is measured at 50 psi while 1300 gpm was

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discharging from a nearby hydrant. The water utility is contacted and they indicate that a reasonable low static pressure accounting for typical daily and seasonal fluctuations in this area is 55 psi and that a reasonable low residual pressure accounting for typical daily and seasonal fluctuations in this area at a flow of 1300 gpm is 35 psi. The equation that describes the water supply available for a fire sprinkler system would be:

( ) 551300

553585.1

+

−=

QP

There are two ways to use this formula. One would be to assume two different values for Q, calculate P and then draw a graph on log 1.85 paper. Any fire sprinkler system demand falling on or below the line on this graph would be acceptable in accordance with NFPA 13 to work with this water supply. In this case, the two easiest flows to pick for Q would be 0 and 1300 gpm. When Q = 0, P is simply 55 psi. When Q = 1300 gpm, P = 35 psi. These two points can be plotted on log 1.85 paper as shown in Figure A.24.2.2.2.1. The second way to use this formula would be to calculate the fire protection system and determine the flow necessary to make the system work. Plug this flow into the formula above and see what the available pressure from the water supply will be at that flow. For example, if a sprinkler system connected to this water supply had a demand of 580 gpm, the available pressure from the water supply would be:

( ) 551300

5805535

85.1

+

−=P

P = (-20)(0.225) + 55

P = 50.5 psi

So, as long as the sprinkler system has a pressure demand less than or equal to 50.5 psi, it will work with this water supply.

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Figure A.24.2.2.2.1 Available Water Supply Curve for Example in Section A.24.2.2.2.1

A.24.2.2.1.3 The purpose of the adjustment required by this section is to take into account reasonable fluctuations that occur on a daily and seasonal basis, but not to burden the building owner with extreme conditions. During an extreme condition such as a water main break or a severe drought, the impaired system provisions of NFPA 25 can be employed to mitigate the circumstances of the extreme condition. The intent of this section is to apply the adjustment to the raw data obtained by the flow test and not to apply adjustments to values that have already been adjusted by water utilities. If a water utility has already provided flow and pressure data for use in the design of fire protection systems that already includes adjustments for daily and seasonal water usage, there is no need to make any additional adjustments to this data. A.24.2.2.1.4 See annex note A.24.2.2.1.3. A.24.2.2.1.6 Water utilities are the entities that know their own supplies the best and know what appropriate adjustments need to be made to flow test data to provide reasonable fire protection. In the potential situation where the water utility will not make a definitive statement with regard to an adjustment, the fire protection engineer is the person that would need to make a statement with respect to adjustments to the raw data from a flow test. Due to the judgment involved in making such a decision, the licensing laws in most states within the United States would require the fire protection engineer to make this determination rather than the fire protection system contractor. It is expected that the engineer would make these statements in the specifications provided to the fire protection system contractor. In the absence of any information from any authority on the subject, section 24.2.2.2.2 provides a standardized method of making a decision. A.24.2.2.2.2 Section 24.2.2.2.2 provides a standardized method of making a decision regarding the reduction of the results from a waterflow test to determine what pressure and flow are available from a water supply when the specifying engineer and the water utility have not provided adjustment information. An example of how to use this standardized method follows.

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If a waterflow test is conducted at a location where a city water main is going to be tapped for a new sprinkler system and the static pressure is measured at 70 psi, with the residual pressure measured at 50 psi while 1300 gpm was discharging from a nearby hydrant. If there is no information from the specifying engineer or water utility regarding appropriate adjustments, the value of the static pressure and residual pressure need to be reduced by 5%. The static pressure would be adjusted from 70 psi to 66.5 psi (70 x 0.95 = 66.5). The residual pressure at 1300 gpm would be reduced from 50 psi to 47.5 psi (70 x 0.95 = 47.5). The results would be plotted on log 1.85 graph paper as shown in the lower curve on Figure A.24.2.2.2.2 and that curve would represent what the fire protection system contractor could use for a fire protection system.


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24.2.2.2.1 Where a waterflow test was conducted, the volume and pressure available for use for afire protection system shall be determined from either 24.2.2.2.1.1 or 24.2.2.2.1.2:

24.2.2.2.1.1* Knowledge of the water supply and engineering judgment taking into accountreasonable daily and seasonal fluctuations not extreme conditions.

24.2.2.2.1.2* Use of the following formula:

P = The pressure available from the water supply to use for a fire protection system that willbe calculated for a given flow (Q)

Q = The flow that will be used to calculate the available pressure from the water supply.

P R = The residual pressure measured during the waterflow test while the flow Q R was

discharging from the water supply.

P S = The static pressure measured during the waterflow test.

Q R = The flow discharging from the water supply when P R was measured.

P L = The expected low static pressure at the location of the test results accounting for

daily and seasonal fluctuations (not extreme conditions) obtained from the water utility. Where the water authority does not provide P L , see 24.2.2.2.1.3.

24.2.2.2.1.3 Where the water authority does not provide a value for P L , the value of P L shall be

calculated from the following formula:

P L = P S – 10 psi



Safety_Factor_Proposal.docxThis is how the three proposals on this subject would look if they are all accepted


There needs to be a reasonable adjustment to water supply data in order to accommodate changes due to daily and seasonal fluctuations. The fact that this is currently not a requirement allows the design of fire protection systems that are known by the designer to have an ineffective water supply almost immediately after installation.

This proposal takes care of the traditional arguments against a mandated safety margin by creating a standardized method of calculating that safety margin; however, this standardized method is only used if there is no information regarding the water utility. So, those situations where the fluctuations in the water delivery are known at a particular location, then these take priority.

Spelling out the fact that NFPA 13 is not expecting unusual circumstances like water main breaks and 100 year droughts should help alleviate liability concerns on the part of the water utility, which should lead to a more open dialog between the fire protection professional and the water utility representative. The reality is that extreme conditions like 100 year droughts and water main breaks are better handled by the Impairment Procedures of NFPA 25.

One of the concerns about this proposal last cycle was that there was no way to account for the situation where the water utility brings more pumps on line as the flow demand increases. These situations produce a water supply curve that looks more like a saw-tooth configuration than a line. That concern has been handled with the


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Water Supply Adjustment Proposals Put Together Insert new sections as follows: 24.2.2.2.1 Where a waterflow test was conducted, the volume and pressure available for use for a fire protection system shall be determined from either 24.2.2.2.1.1 or 24.2.2.2.1.2. 24.2.2.2.1.1* Knowledge of the water supply and engineering judgment taking into account reasonable daily and seasonal fluctuations not extreme conditions. 24.2.2.2.1.2* Use of the following formula:

LR

SR PQ

QPPP

85.1

P = The pressure available from the water supply to use for a fire protection system that will be calculated for a given flow (Q) Q = The flow that will be used to calculate the available pressure from the water supply. PR = The residual pressure measured during the waterflow test while the flow QR was discharging from the water supply. PS = The static pressure measured during the waterflow test. QR = The flow discharging from the water supply when PR was measured. PL = The expected low static pressure at the location of the test results accounting for daily and seasonal fluctuations (not extreme conditions) obtained from the water utility. Where the water authority does not provide PL, see 24.2.2.2.1.3.

24.2.2.2.1.3 Where the water authority does not provide a value for PL, the value of PL shall be calculated from the following formula:

PL = PS – 10 psi A.24.2.2.2 An adjustment to the waterflow test data to account for daily and seasonal fluctuations, possible interruption by flood or ice conditions, large simultaneous industrial use, future demand on the water supply system, or any other condition that could affect the water supply should be made as appropriate. A.24.2.2.2.1.1 The purpose of the adjustment is to take into account reasonable daily and seasonal variations in the water supply, which are easily predicted and tracked by a water utility. It is not the intent to use this section to account for unusual conditions such as 100 year droughts or water main breaks. These unusual conditions are handled through the Impairment Procedures

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of NFPA 25 and should not be considered when determining the ability of a water supply to meet the demand of a fire protection system under more normal circumstances. A.24.2.2.2.1.2 Consider the following example. A waterflow test is conducted at a location where a city water main is going to be tapped for a new sprinkler system. During the test, the static pressure is measured at 70 psi, the residual pressure is measured at 50 psi while 1300 gpm was discharging from a nearby hydrant. The water utility is contacted and they indicate that a reasonable low static pressure accounting for typical daily and seasonal fluctuations in this area is 55 psi. The equation that describes the water supply available for a fire sprinkler system would be:

551300

705085.1

QP


551300

5807050

85.1

P

P = (-20)(0.225) + 55

P = 50.5 psi


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Sprinkler system demand can be anywhere in shaded region

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proposed language in the new section 24.2.2.2.1.1.



Public Input No. 159-NFPA 13-2016 [New Sectionafter A.24.2.2]

Annex text for proposed language in the body

Public Input No. 158-NFPA 13-2016 [Section No.A.24.2.2.2]

Proposed language in the body replaces the needfor this text




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24.2.2.2*

The volume and pressure of a public water supply shall be determined from waterflow test data or otherapproved method. Daily and seasonal flow and pressure fluctuation data shall be provided by the waterpurveyor, and the fire protection design must account for both high and low variations. Where this data isnot available, design shall be based on the available water flow data.



PC_212.pdf 13-PC_212



Some version of the requirement to identify and adjust for pressure fluctuations has been in the body of the NFPA 13 standard for many years. Below is the text from the 1996 edition: "7-2 Types. 7-2.1" Connections to Water Works Systems. A connection to a reliable water works system shall be an acceptable water supply source. The volume and pressure of a public water supply shall be determined from waterflow test data. (See NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances.) The authority having jurisdiction shall be permitted to require an adjustment to the waterflow test data to account for daily and seasonal fluctuations, possible interruption by flood or iceconditions, large simultaneous industrial use, future demand on the water supply system, or any other condition that could affect the water supply." Moving the requirement to account for pressure fluctuations into the Appendix in the 2010 edition of the standard removes a great deal of the authority of local enforcers to require that fire hydrant flow test data be adjusted to account for such pressure fluctuation. As an enforcer, I have already encountered this argument. After the first revisions meeting, my proposal to the 2015 edition of the International Fire Code was heard and aproved. Such will now that water flow tests be adjusted to account for such fluctuations in the 2015 IFC. Further, my similar proposal to NFPA 14 was debated significantly, but we finally agreed on the revised text that I have submitted with this proposal as a first revision. Most public water supply systems fluctuate significantly throughout the day as well as seasonally. The result can be a very inadequate fire sprinkler design, or potentially a system that fluctuates over the 100 psi mark necessitating surge clips and hanger changes, or if provided with a fire pump, a system that fluctuates over 175 psi. This is a critical issue that was located in the body of the standard for many years, and in my opinion, adequate substantiation was not provided to move it to the Appendix, which again, in most jurisdictions, is not enforceable. This is not an advisory statement or commentary and is not always an engineering decision, and even if it is, it still must be a requirement for adequate fire protection design. The reason statements that I have been told in the various committees for not doing this is that the information can be difficult to acquire from the jurisdiction. That is not acceptable in my opinion. I do not know how one can ethically design a water-based fire protection system without at least attempting to acquire this fluctuation information. I will further note that the FPRF has begun a project to investigate more specifically water models utilized by water authorities and how to accommodate fluctuation issues, in general - that is not a very good description I am sure, but I believe such was in response to an NFPA 13 committee request regarding these proposals.



Organization: NFPA


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Public Comment No. 212-NFPA 13-2014 [ Section No. 24.2.2.2 ]

24.2.2.2 *

The volume and pressure of a public water supply shall be determined from waterflow test data or otherapproved method. Daily and seasonal flow and pressure fluctuation data shall be provided by the waterpurveyor, and the fireprotection design must account for both high and low variations. Where this data is not available, design shallbe based on the available water flow data.


Some version of the requirement to identify and adjust for pressure fluctuations has been in the body of the NFPA 13 standard for many years. Below is the text from the 1996 edition: "7-2 Types.7-2.1" Connections to Water Works Systems. A connection to a reliable water works system shall be an acceptable water supply source. The volume and pressure of a public water supply shall be determined from waterflow test data.(See NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances.) The authority having jurisdiction shall be permitted to require an adjustment to the waterflow test data to account for daily and seasonal fluctuations,possible interruption by flood or iceconditions, large simultaneous industrial use, future demand on the water supply system, or any other condition that could affect the water supply."

Moving the requirement to account for pressure fluctuations into the Appendix in the 2010 edition of the standard removes a great deal of the authority of local enforcers to require that fire hydrant flow test data be adjusted to account for such pressure fluctuation. As an enforcer, I have already encountered this argument. After the first revisions meeting, my proposal to the 2015 edition of the International Fire Code was heard and aproved. Such will now that water flow tests be adjusted to account for such fluctuations in the 2015 IFC. Further, my similar proposal to NFPA 14 was debated significantly, but we finally agreed on the revised text that I have submitted with this proposal as a first revision. Most public water supply systems fluctuate significantly throughout the day as well as seasonally. The result can be a very inadequate fire sprinkler design, or potentially a system that fluctuates over the 100 psi mark necessitating surge clips and hanger changes, or if provided with afire pump, a system that fluctuates over 175 psi. This is a critical issue that was located in the body of the standard for many years, and in my opinion, adequate substantiation was not provided to move it to the Appendix, which again, in most jurisdictions, is not enforceable. This is not an advisory statement or commentary and is not always an engineering decision, and even if it is, it still must be a requirement for adequate fire protection design. The reason statements that I have been told in the various committees for not doing this is that the information can be difficult to acquire from the jurisdiction. That is not acceptable in my opinion. I do not know how one can ethically design a water-based fire protection system without at least attempting to acquire this fluctuation information.I will further note that the FPRF has begun a project to investigate more specifically water models utilized by water authorities and how to accommodate fluctuation issues, in general - that is not a very good description I am sure, but I believe such was in response to an NFPA 13 committee request regarding these proposals.

Related Item



Submitter Full Name: Bob Morgan

Organization: Fort Worth Fire Department

Street Address:

City:

State:

Zip:



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Committee Statement

CommitteeAction:

Rejected but held



I, Bob Morgan, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in this PublicComment (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquire norights, including rights as a joint author, in any publication of the NFPA in which this Public Comment in this or another similar or derivative formis used. I hereby warrant that I am the author of this Public Comment and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Bob Morgan, and I agree to be legally bound by the above Copyright Assignment and the terms andconditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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24.2.2.2*

The volume flow and pressure of a public water supply shall be determined from waterflow test data orother approved method.

24.2.2.2.1 Water supply fluctuations must be addressed in the design of sprinkler systems, as required bythe Authority Having Jurisdiction.

24.2.2.2.2 Safety factors must be addressed in the design of sprinkler systems, as required by theAuthority Having Jurisdiction.


The International Codes now specifically require that water supply fluctuations be addressed in sprinkler system design as follows (from 2015 IFC, Section 903.3.5):"For connections to public waterworks systems, the water supply test used for design of fire protection systems shall be adjusted to account for seasonal and daily pressure fluctuations based on information from the water supply authority and as approved by the firecode official."The main reason for this proposed change to the IFC was that NFPA 13 changed in the 2010 edition to move this similar requirement from the body of the standard to the Appendix making it difficult for AHJ's to enforce such, as well as making the issue of adjusting for such water supply fluctuation seem unimportant by removing it from the requirements.

Additionally, NFPA 14 (2016 edition) now states: "10.1.1 Daily and seasonal flow and pressure fluctuation data shall be provided by the water purveyor, and the fire protection design must account for both high and low variations.10.1.1.1 Where these data are not available, design shall be based on the available water flow data."

This proposal is simply an intent to recognize the need for and importance of water supply fluctuation to be evaluated, as well as to recognize that many jurisdictions require safety factors in the design of sprinkler systems.


Submitter Full Name: Bob Morgan

Organization: Fort Worth Fire Department

Street Address:

City:

State:

Zip:

Submittal Date: Thu Mar 24 13:59:29 EDT 2016


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24.2.5 Gravity Tanks Tanks .

An elevated A tank installed in accordance with NFPA 22 shall be an acceptable water supply source.


The words Gravity in the title and elevated in the body text are not necessary.


Submitter Full Name: Thomas Wellen


Street Address:

City:

State:

Zip:

Submittal Date: Sun Jun 26 14:31:54 EDT 2016


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Public Input No. 403-NFPA 13-2016 [ New Section after A.3.9.3.6 ]

A.3.9.3.6.1 Flue Space Maintenance . Keeping required Flue Spaces open in an operating warehouseis a challenging task for both management and forklift operators. Devices are available to assist in thateffort. They typically fasten to the rack structure and provide physical barriers. See Figure A.3.9.3.6.1 (a) fora Longitudinal Flue Space device. See Figures A.3.9.3.6.1 (b) and (c) for Transverse Flue Space devices.

Figure A.3.9.3.6.1 (a) Figure A.3.9.3.6.1 (b) Figure A.3.9.3.6.1 (c)



PalletLongitudinal.JPG Figure A.3.9.3.6.1 (a)

PalletTranverse.jpg Figure A.3.9.3.6.1 (b)

PalletTransverseCenter.jpg Figure A.3.9.3.6.1 (c)


Annex material to make users aware of products available in the marketplace to keep required flue spaces open.


Submitter Full Name: Gary Smith

Organization: DACS, Inc.

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of 1114

Public Input No. 298-NFPA 13-2016 [ Section No. A.5.6 ]


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A.5.6 [A.20.3]


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Specification of the type, amount, and arrangement of combustibles for any commodity classification isessentially an attempt to define the potential fire severity, based on its burning characteristics, so the firecan be successfully controlled by the prescribed sprinkler protection for the commodity class. In actualstorage situations, however, many storage arrays do not fit precisely into one of the fundamentalclassifications; therefore, the user needs to make judgments after comparing each classification to theexisting storage conditions. Storage arrays consist of thousands of products, which makes it impossible tospecify all the acceptable variations for any class. As an alternative, a variety of common products areclassified in this annex based on judgment, loss experience, and fire test results.

Table A.5.6 [Table A.20.3] provides examples of commodities not addressed by the classifications inSection Section [20.3] 5.6. The commodities listed in Table A.5.6 [Table 20.3] are outside the scope ofNFPA 13 protection.

Table A. 20.3 includes lithium ion batteries. Lithium ion batteries have been a research project within theNFPA Research Foundation. As a result, the following reports have been published:

(1) “Lithium ion batteries hazard and use assessment” published July 2011 and available at the NFPAResearch Foundation web site.

(2) “Flammability Characterization of Lithium-ion Batteries in Bulk Storage” published March 2013 andavailable at www.fmglobal.com/researchreports.

(3) “Lithium Ion Batteries Hazard and Use Assessment Phase IIB, Flammability Characterization of Li-ionBatteries for Storage Protection” published April 2013 and available at the NFPA Research Foundationweb site.

(4) “Sprinkler Protection Criteria for Lithium Ion Batteries Stored in Cartons” [Editor please confirm actual report name once it is released in July 2016] published July 2016 and available at the NFPAResearch Foundation web site.

Table A. 5.6.3 [Table A.20.3] is an alphabetized list of commodities with corresponding classifications.

Table A.5.6.3.1, Table A.5.6.3.2, Table A.5.6.3.3, Table A.5.6.3.4, and Table A.5.6.4.1 [Table A.20.4.1,Table A.20.4.2, Table A.20.4.3, Table A.20.4.4, and Table A.20.4.5.1] provide examples of commoditieswithin a specific class.

Table A.5.6 Examples 6 [Table A.20.3] Examples of Commodities Not Addressed by Classifications inSection 5.6

Ammunition Components

- Bulk primers and powder

Batteries

- Lithium and other similar exotic metals

- Lithium-ion and other rechargeable batteries that contain combustible electrolyte

Boat Storage

- Stored on racks

Boxes, Crates

- Empty, wood slatted*

Carpet Rolls

Combustible Metals — unless specifically identified otherwise

Compressed or Liquefied Flammable Gases (i.e., filled propane cylinders) — unless specifically identifiedotherwise

Explosives

- Blasting primers and similar items

Fertilizers (nitrates)

Fireworks

- Consumer and display

Flammable and CombustibleLiquids — unless specifically identified otherwise

- Liquids that contain greater than 20% alcohol


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Hanging Garments, Bulk Storage

Lighters (butane)

- Loose in large containers (Level 3 aerosol)

Storage Container

- Large container storage of household goods

*Should be treated as idle pallets.


These changes are offered in support of the NFPA 13 reorganization. The changes are not intended to introduce any technical change to the standard. In addition, a third paragraph has been added to direct the reader to NFPA Research Foundation Work on lithium ion batteries in storage.




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Public Input No. 300-NFPA 13-2016 [ Section No. A.5.6.1.1 ]


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A.5.6.1.1 [A.20.3.1]


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Commodity classification is governed by the types and amounts of materials (e.g., metal, paper, wood,plastics) that are a part of a product and its primary packaging. Consideration of all characteristics of theindividual storage units, not just the product, is critical to identify the appropriate commodity classification.Refer to [ Table A. 20.3.1] Table A. 5.6.1.1 for general guidance for classifying commodities. For situationswhere it is difficult to determine the appropriate classification, testing should be considered to appropriatelycharacterize the commodity.

Table A.5.6.1.1 General 1 [Table A.20.3.1] General Guide to Identifying the Commodity Class for SolidCombustibles


Material Used to Construct Product Packaging Material PalletMaterial


Entirely noncombustibleNone or single-layercorrugated cartons

None, metal,or wood

Class I

Entirely noncombustibleNone or single-layercorrugated cartons

PlasticClass I, II, or III; see5.6.2

Entirely noncombustibleMultiple-layered corrugatedcartons, wooden crates, orwood boxes

None, metal,or wood

Class II

Entirely noncombustibleMultiple-layered corrugatedcartons, wooden crates, orwood boxes

PlasticClass II, III, or IV; see5.6.2

Entirely noncombustibleCorrugated cartons, woodencrates, or wood boxes, withinternal plastic packaging

None, metal,or wood


Entirely noncombustible

Corrugated cartons, woodencrates, or wooden boxes,with internal plasticpackaging

PlasticSee 5.6.2 and Figure5.6.3.3.3.1

Wood, Paper, Natural Fibers, orGroup C Plastics

Entirely wood, paper, natural fibers, orGroup C plastics, or a mix of thesewith noncombustible materials

None, corrugated cartons,wooden crates, or woodboxes

None, metal,or wood

Class III



None, metal,or wood




Plastic

Class III or IV orcartoned unexpandedGroup A plastic; see5.6.2




Group B Plastics

Entirely Group B plastics, or a mix ofthese with noncombustible, wood,paper, natural fibers, or Group Cplastics materials


None, metal,or wood

Class IV



PlasticClass IV or cartonedunexpanded Group Aplastic; see 5.6.2


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Material Used to Construct Product Packaging Material PalletMaterial


None PlasticClass IV or cartonedunexpanded Group Aplastic; see 5.6.2



None, metal,or wood





Group A Plastics

Free-flowing Group A plastic materialsCorrugated cartons, woodencrates, wood boxes, orbagged

None, metal,wood

Class IV

Free-flowing Group A plastic materialsCorrugated cartons, woodencrates, wood boxes, orbagged

PlasticClass IV or cartonedunexpanded Group Aplastic; see 5.6.2

Entirely unexpanded Group A plasticCorrugated cartons, woodencrates, or wood boxes

None, metal,wood, orplastic

Cartoned unexpandedGroup A plastic

Entirely unexpanded Group A plastic NoneNone, metal,wood, orplastic

Exposed unexpandedGroup A plastic

Entirely unexpanded Group A plasticCorrugated cartons, woodencrates, or wood boxes, withinternal plastic packaging



Entirely expanded Group A plastic

Corrugated cartons, woodencrates, or wood boxes, withor without internal plasticpackaging


Cartoned expandedGroup A plastic

Entirely expanded Group A plastic NoneNone, metal,wood, orplastic

Exposed expandedGroup A plastic

Mix of Group A plastics,noncombustible, wood, paper, naturalfibers, Group B or C plastics materials

Corrugated cartons, woodencrates, or wood boxes, withor without internal plasticpackaging

None, metal,or wood






NoneNone, metal,or wood



None PlasticSee 5.6.2 and Figure5.6.3.3.3.2

Note: This table provides guidance for the general characteristics to be considered in classifying acommodity. The additional commodity classification information included in this standard as well as anyrelevant test data that is available should be considered in identifying the appropriate classification.


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A.5.6.2.2 [A.20.3.2.2.1.2]

For example, Class III will become Class IV, and Class IV will become a cartoned unexpanded Group Aplastic commodity.






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A.5.6.2.3 [A.20.3.2.2.2.1]

For example, Class II will become Class IV, and Class III and Class IV will become a cartoned unexpandedGroup A plastic commodity.






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Public Input No. 303-NFPA 13-2016 [ Section No. A.5.6.3 ]


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A.5.6.3 [A.20.4]


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See [ Table A. 20.4] Table A. 5.6.3.

Table A.5.6.3 Alphabetical 3 [Table 20.4] Alphabetical Listing of Commodity Classes

Product Heading Product NFPA 13

Batteries

Dry cells (excludes lithium, lithium-ion, and other similarexotic metals or combustible electrolyte); without blisterpacking (if blister packed refer to commodityclassification definitions)

Class I

Vehicle; any size (e.g., automobile or truck); emptyplastic casing

Group ANonexpanded

Vehicle; large (e.g., truck or larger); dry or wet (excludeslithium-ion and other cells containing combustibleelectrolyte) cells

Group ANonexpanded

Vehicle; small (e.g., automobile); wet (excludeslithium-ion and other cells containing combustibleelectrolyte) cells

Class I

Empty Containers Noncombustible Class I

PET, bottles or jars Class IV

Rigid plastic (not including PET), up to 32 oz. (1 L)Group ANonexpanded

Rigid plastic (not including PET), greater than 32 oz.(1 L)

Group A Expanded

Wood; solid sided (e.g., crates, boxes) Class II

Film Rolls, IncludingPhotographic

Film (polypropylene, polyesther, polyethylene); rolled onany reel type

Group ANonexpanded

Film; 35 mm metal film cartridges in polyethylene cans;cartoned

Class III

Film; motion picture or bulk rolls in polycarbonate,polyethylene or in metal cans; polyethylene bagged;cartoned

Class II

Film; rolls in polycarbonate plastic cassettes; cartoned Class IV

Photographic paper; sheets; bagged in polyethylene;cartoned

Class III

Flammable/CombustibleLiquids

Aerosol; Level 1 Class III

Lighters; butane; blister-packed; cartonedGroup ANonexpanded

Liquids; up to 20 percent alcohol (e.g. alcoholicbeverages, flavoring extracts); greater than 5 gallon(20 L) plastic containers with wall thickness greater than1⁄4 in. (6 mm)

Group ANonexpanded

Liquids; up to 20 percent alcohol (e.g., alcoholicbeverages, flavoring extracts); metal, glass or ceramiccontainers

Class I

Liquids; up to 20 percent alcohol (e.g., alcoholicbeverages, flavoring extracts); plastic containers greaterthan 5 gallons (20 L) and wall thickness up to 1⁄4 in.(6 mm)

Class II

Liquids; up to 20 percent alcohol (e.g., alcoholicbeverages, flavoring extracts); up to 5 gallons (20 L)plastic bottles or jars

Class I


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Liquids; up to 20 percent alcohol (e.g., alcoholicbeverages, flavoring extracts); wood containers

Class II

Food Products — Frozen Frozen foods; nonwaxed or nonplastic packaging Class I

Frozen foods; plastic trays Class III

Frozen foods; waxed or plastic-coated paper packaging Class II

Food Products —Non-Frozen

Butter (stick or whipped spread) or margarine (up to50 percent oil)

Class III

Dry foods (such as baked goods, candy, cereals,cheese, chocolate, cocoa, coffee, grains, granular sugar,nuts, etc.); bagged or cartoned

Class III

Foods (e.g., coffee, fish products, fruit, meat products,nuts, poultry, etc.); metal cans

Class I

Fruits and vegetables (noncombustible semi-liquids);crushed; plastic containers up to 5 gallons (20 L)

Class I

Fruits and vegetables; fresh; wood spacers, non-plastictrays or containers

Class I

Margarine; over 50 and up to 80 percent oilGroup ANonexpanded

Meat; fresh; no plastic packaging; uncartoned Class I

Meat; fresh; no plastic packaging; cartoned Class II

Meat; fresh; plastic trays Class III

Milk; any container; stored in solid plastic cratesGroup ANonexpanded

Milk; paper containers, or plastic bottles or jars up to5 gallons (20 L) plastic bottles or jars

Class I

Salt; bagged Class I

Salt; cartoned Class II

Snack foods (e.g., potato chips); plasticized aluminumbags; cartoned

Group ANonexpanded

Syrup; wooden container Class II

Furniture and Bedding Furniture and bedding; with foam cushioning Group A Expanded

Furniture; metal (e.g., file cabinets or desks with plastictrim); cartoned

Class I

Furniture; wood (e.g., doors, windows, cabinets, etc.); noplastic coverings or foam cushioning

Class III

Furniture; wood; plastic coverings nonexpanded plastictrim

Class IV

Box spring; standard (minimal plastic materials) Class III

Box spring; wrapped in plastic cover Class IV

Mattress; foam (in finished form) Group A Expanded

HousingMaterials/Appliances

Appliances; major (e.g., stoves, refrigerators); noappreciable plastic interior or exterior trim; cartoned

Class II

Appliances; major (e.g., stoves, refrigerators); noappreciable plastic interior or exterior trim; uncartoned

Class I

Appliances; no appreciable plastic exterior trim (interiorof unit can have appreciable plastic)

Class III

Carpet tiles; cartonedGroup ANonexpanded


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Fiberglass insulation; paper-backed rolls; bagged orunbagged

Class IV

Floor coverings; vinyl, stacked tiles Class IV

Floor coverings; vinyl; rolledGroup ANonexpanded

Gypsum board Class I

Housing materials (such as sinks, countertops, etc.);noncombustible, cartoned or crated

Class II

Paint; oil-based; friction-top metal containers; cartoned Class IV

Paint; water-based (latex); friction-top metal containers;cartoned

Class I

Roofing shingles; asphalt-coated fiberglass Class III

Roofing shingles; asphalt-impregnated felt Class IV

Miscellaneous Ammunition; small arms and shotgun; cartoned Class IV

Charcoal; mineral spirit impregnated; bagged Group A Expanded

Charcoal; standard (non-mineral spirit impregnated);bagged

Class III

Leather hides; baled Class II

Leather; finished products (e.g., shoes, jackets, gloves,bags, luggage, belts)

Class III

Motors; electric Class I

Shock absorbers; metal dust cover Class II

Shock absorbers; plastic dust cover Class III

Skis; composite materials (plastic, fiberglass, foam, etc.) Class IV

Tobacco products; cartoned Class III

Toys; stuffed; foam or synthetic Group A Expanded

Transformer; dry or empty (i.e., void of oil)-filled Class I

Noncombustible LiquidsLiquids or semi-liquids; PET containers greater than5 gallon (20 L) having a nominal wall thickness greaterthan 0.25 in (6 mm)

Class IV

Liquids or semi-liquids; PET containers up to 5 gallon(20 L) or greater than 5 gallon (20 L) having a nominalwall thickness up to 0.25 in (6 mm)

Class I

Liquids or semi-liquids (e.g., crushed fruits andvegetables); plastic containers up to 5 gallon (18.9 L)capacity

Class I

Liquids or semi-liquids; plastic (except PET) containersgreater than 5 gallon (20 L) capacity having a nominalwall thickness greater than 0.25 in. (6 mm)

Group ANonexpanded

Liquids or semi-liquids; plastic (except PET) containersgreater than 5 gallon (20 L) capacity having a nominalwall thickness up to 0.25 in. (6 mm)

Class II

Liquids; cardboard drink boxes, plastic-coated,wax-coated, and/or aluminum-lined; uncartoned or oncorrugated carton trays with plastic sheeting.

Class I

Liquids; cardboard drink boxes, plastic-coated,wax-coated, and/or aluminum-lined; stored in plasticcontainers

Group ANonexpanded

Liquids; glass bottles or jars; cartoned Class I


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Liquids; pharmaceuticals (nonflammable); glass bottlesor jars; cartoned

Class II

Liquids; plastic bottles or jars; stored in open or solidplastic crates

Group ANonexpanded

Paper Products Book signatures (paper part of book without hard cover) Class II

Cartons (i.e., cardboard flats); corrugated; partiallyassembled

Class IV

Cartons (i.e., cardboard flats); corrugated; unassembledin neat piles

Class III

Cartons; wax-coated, single-walled corrugatedGroup ANonexpanded

Cellulosic paper products; nonwax-coated (e.g., books,cardboard games, cartoned tissue products, magazines,newspapers, paper cups, paper plates, paper towels,plastic-coated paper food containers, stationery)

Class III

Cellulosic paper products; wax-coated (e.g., paperplates, cups); loosely packed; cartoned

Group ANonexpanded

Cellulosic paper products; wax-coated (e.g., paperplates, cups.); nested; cartoned

Class IV

Matches; paper-type; cartoned Class IV

Matches; wooden; cartonedGroup ANonexpanded

Rolled; lightweight; in storage racks Class IV

Rolled; medium or heavyweight; in storage racks oron-side

Class III

Tissue products; plastic-wrapped; cartoned Class III

Tissue products; plastic-wrapped; uncartonedGroup ANonexpanded

Plastic/Rubber ABS (Acrylonitrile-butadiene-styrene copolymer)Group ANonexpanded

Acetal (polyformaldehyde)Group ANonexpanded

Acrylic (polymethyl methacrylate)Group ANonexpanded

Automobile bumpers and dashboards Group A Expanded

Butyl rubberGroup ANonexpanded

Cellulose Acetate Class IV

Cellulose Acetate ButyrateGroup ANonexpanded

Chloroprene rubber Class IV

Containers; nonexpanded plastic gridded or solid;collapsed or nested with no air spaces

Group ANonexpanded

ECTFE (ethylene-chlorotrifluoro-ethylene copolymer) Class IV

EPDM (ethylene-propylene rubber)Group ANonexpanded

ETFE (ethylene-tetrafluoroethylene copolymer) Class IV

Ethyl CelluloseGroup ANonexpanded


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FEP (fluorinated ethylene-propylene copolymer) Class IV

FRP (fiberglass-reinforced polyester)Group ANonexpanded

Melamine (melamine formaldehyde) Class III

Nitrile Rubber (acrylonitrile-butadiene rubber)Group ANonexpanded

Nylon (nylon 6, nylon 6/6)Group ANonexpanded

PCTFE (polychlorotrifluoroethylene) Class III

PET (Polyethylene Terephthalate — thermoplasticpolyester)

Group ANonexpanded

Phenolic Class III

Plastics; stored in fully closed and solid (no openings),metal containers

Class I

PolybutadieneGroup ANonexpanded

PolycarbonateGroup ANonexpanded

Polyester elastomerGroup ANonexpanded

PolyethyleneGroup ANonexpanded

PolypropyleneGroup ANonexpanded

Polystyrene; foam products (plates, cups, etc.) Group A Expanded

Polystyrene; rigid productsGroup ANonexpanded

Polyurethane Group A Expanded

PTFE (polytetrafluoroethylene) Class III

PVC (polyvinyl chloride) products, up to 20% plasticizer Class III

PVC (polyvinyl chloride) products, greater than 20%plasticizer

Group ANonexpanded

PVC resins; bagged Class III

PVDC (polyvinylidene chloride) Class III

PVDF (polyvinylidene fluoride) Class III

PVF (polyvinyl fluoride)Group ANonexpanded

Rubber; natural in blocks; cartonedGroup ANonexpanded

Rubber; natural; expanded Group A Expanded

Rubber; natural; nonexpandedGroup ANonexpanded

Rubber; synthetic (santoprene)Group ANonexpanded

SAN (styrene acrylonitrile)Group ANonexpanded

SBR (styrene-butadiene rubber)Group ANonexpanded


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Silicone rubber Class IV

Urea (urea formaldehyde) Class III

Plastic ContainersBottles or jars (except PET) greater than 1 gallon (4 L)containing noncombustible solids

Group ANonexpanded

Bottles or jars (except PET) up to 1 gallon (4 L)containing noncombustible solids

Group A, cartoned(treat as cartonedeven if uncartoned)Nonexpanded

Powders/Pills Pharmaceutical pills; glass bottles or jars; cartoned Class II

Pharmaceuticals pills; plastic bottles or jars; cartoned Class IV

Polyvinyl Alcohol (PVA) resins; bagged Class IV

Powders; combustible (ordinary such as sugar or flour);free-flowing; bagged

Class II

Powders; noncombustible free-flowing powdered orgranular materials (cement, calcium chloride, clay, ironoxide, sodium chloride, sodium silicate, etc.)

Class I

Powders; noncombustible; glass bottles or jars; cartoned Class I

Powders; noncombustible; PET bottles or jars Class II

Powders; noncombustible; plastic (other than PET)bottles or jars; uncartoned

Group ANonexpanded

Powders; noncombustible; plastic bottles or jars greaterthan 1 gallon (4 L) capacity

Group ANonexpanded

Powders; noncombustible; plastic bottles or jars up to1 gallon (4 L) capacity; cartoned

Class IV

Textile Materials/Products Cloth; natural fibers; baled Class III


Clothing; natural fibers (e.g., wool, cotton) and viscose Class III




Diapers; plastic or nonwoven fabric; plastic-wrapped;uncartoned

Group ANonexpanded


Fabric; synthetic (except rayon and nylon); greater than50/50 blend

Group ANonexpanded

Fabric; synthetic (except rayon and nylon); up to 50/50blend

Class III

Fabric; vinyl-coated (e.g. tablecloth); cartonedGroup ANonexpanded


Fibers; synthetic (except rayon and nylon); baledGroup ANonexpanded

Thread or yarn; rayon and nylon; wood or paper spools Class IV

Thread or yarn; rayon or nylon; plastic spoolsGroup ANonexpanded

Thread or yarn; synthetic (except rayon and nylon);greater than 50/50 blend; paper or wood spools

Class IV


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Thread or yarn; synthetic (except rayon and nylon);greater than 50/50 blend; plastic spools

Group ANonexpanded

Thread or yarn; synthetic (except rayon and nylon); up to50/50 blend; plastic spools

Group ANonexpanded

Thread or yarn; synthetic (except rayon and nylon); up to50/50 blend; wood or paper spools

Class III

Wax Products Candles Group A Expanded

Paraffin or petroleum wax; blocks Group A Expanded

Wire/Cable/Spools Spools; plastic; emptyGroup ANonexpanded

Spools; wood; empty Class III

Wire or cable; PVC insulated; metal or wood spools Class II

Wire or cable; PVC insulated; plastic spools Class IV

Wire; bare; metal spools, uncartoned Class I

Wire; bare; metal spools; cartoned Class II

Wire; bare; plastic spools; cartoned Class IV

Wire; bare; plastic spools; uncartonedGroup ANonexpanded

Wire; bare; wood or cardboard spools Class II

Wood Products Wood patterns Class IV

Wood products (e.g., fiberboard, lumber, particle board,plywood, pressboard with smooth ends and edges);bundled solid blocks

Class II

Wood products (e.g., fiberboard, lumber, particle board,plywood, pressboard with smooth ends and edges);unbundled or non-solid blocks

Class III

Wood products (e.g., toothpicks, clothespins andhangers)

Class III






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A.5.6.3.1 [A.20.4.1]

See [ Table A. 20.4.1] Table A. 5.6.3.1.

Table A.5.6.3.1 Examples 1 [Table A.20.4.1] Examples of Class I Commodities

Product Heading Product

BatteriesDry cells (excludes lithium, lithium-ion, and other similar exotic metals orcombustible electrolyte); without blister packing (if blister packed refer tocommodity classification definitions)

Vehicle; small (e.g. automobile); wet (excludes lithium-ion and other cellscontaining combustible electrolyte) cells

Empty Containers Noncombustible


Liquids; up to 20 percent alcohol (e.g., alcoholic beverages, flavoring extracts);metal, glass or ceramic containers

Liquids; up to 20 percent alcohol (e.g., alcoholic beverages, flavoring extracts);up to 5 gallons (20L) plastic bottles or jars

Food Products — Frozen Frozen foods; nonwaxed or nonplastic packaging


Foods (coffee, fish products, fruit, meat products, nuts, poultry, etc.); metalcans

Fruits and vegetables (noncombustible semi-liquids); crushed; plasticcontainers up to 5 gallons (20 L)

Fruits and vegetables; fresh; wood spacers, non-plastic trays or containers

Meat; fresh; no plastic packaging; uncartoned

Milk; paper containers, or plastic bottles or jars up to 5 gallons (20 L) plasticbottles or jars

Salt; bagged

Furniture and Bedding Furniture; metal (e.g., file cabinets or desks with plastic trim); cartoned


Appliances; major (e.g., stoves, refrigerators); no appreciable plastic interior orexterior trim; cartoned

Gypsum board

Paint; water-based (latex); friction-top metal containers; cartoned

Miscellaneous Motors; electric

Transformer; dry or empty (i.e., void of oil)

Noncombustible LiquidsLiquids or semi liquids; PET containers greater than 5 gallon (20 L) having anominal wall thickness greater than 0.25 in (6 mm)

Liquids or semi-liquids (e.g. crushed fruits and vegetables); plastic containersup to 5 gallon (20 L) capacity

Liquids; cardboard drink boxes, plastic-coated, wax-coated, and/or aluminum-lined; uncartoned or on corrugated carton trays with plastic sheeting

Liquids; glass bottles or jars; cartoned

Plastic/Rubber Plastics; stored in fully closed and solid (no openings), metal containers

Powders/PillsPowders; noncombustible free-flowing powdered or granular materials(cement, calcium chloride, clay, iron oxide, sodium chloride, sodium silicate,etc.); bagged

Powders; noncombustible; glass bottles or jars; cartoned

Wire/Cable/Spools Wire; bare; metal spools, uncartoned




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A.5.6.3.2 [A.20.4.2]

See [Tabale A.20.4.2] Table A.5.6.3.2.

Table A.5.6.3.2 Examples 2 [Table A.20.4.2] Examples of Class II Commodities


Empty Containers Wood; solid sided (e.g., crates, boxes)


Film; motion picture or bulk rolls in polycarbonate, polyethylene or in metalcans; polyethylene bagged; cartoned


Liquids; up to 20 percent alcohol (e.g., alcoholic beverages, flavoringextracts); plastic containers greater than 5 gallons (20 L) and wall thicknessup to 1⁄4 in. (6 mm)

Liquids; up to 20 percent alcohol (e.g., alcoholic beverages, flavoringextracts); wood containers

Food Products — Frozen Frozen foods; waxed or plastic-coated paper packaging


Meat; fresh; no plastic packaging; cartoned

Salt; cartoned

Syrup; wooden container


Appliances; major (e.g., stoves, refrigerators); no appreciable plastic interioror exterior trim; cartoned

Housing materials (such as sinks, countertops, etc.); noncombustible,cartoned or crated

Miscellaneous Leather hides; baled

Shock absorbers; metal dust cover

Noncombustible Liquids Liquids or semi-liquids; plastic (except PET) containers greater than 5 gallon(20 L) capacity having a nominal wall thickness up to 0.25 in. (6 mm)

Liquids; pharmaceuticals (nonflammable); glass bottles or jars; cartoned

Paper Products Book signatures (paper part of book without hard cover)

Powders/Pills Pharmaceutical pills; glass bottles or jars; cartoned

Powders; combustible (ordinary such as sugar or flour); free-flowing; bagged

Powders; noncombustible; PET bottles or jars

Wire/Cable/Spools Wire or cable; PVC insulated; metal or wood spools

Wire; bare; metal spools; cartoned

Wire; bare; wood or cardboard spools

Wood Products Wood products (e.g., fiberboard, lumber, particle board, plywood, pressboardwith smooth ends and edges); bundled solid blocks





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A.5.6.3.3 [A.20.4.3]


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Table A.5.6.3.3 Examples 3 [Table A.20.4.3] Examples of Class III Commodities



Film; 35 mm metal film cartridges in polyethylene cans; cartoned

Photographic paper; sheets; bagged in polyethylene; cartoned


Aerosol; Level 1

Food Products — Frozen Frozen foods; plastic trays


Butter (stick or whipped spread) or margarine (up to 50 percent oil)

Dry foods (such as baked goods, candy, cereals, cheese, chocolate, cocoa,coffee, grains, granular sugar, nuts, etc.); bagged or cartoned

Meat; fresh; plastic trays

Furniture and Bedding Furniture; wood (doors, windows, cabinets, etc.); no plastic coverings or foamcushioning

Box spring; standard (minimal plastic materials)


Appliances; no appreciable plastic exterior trim (interior of unit can haveappreciable plastic)

Roofing shingles; asphalt-coated fiberglass

Miscellaneous Charcoal; standard (non-mineral spirit impregnated); bagged

Leather; finished products (e.g., shoes, jackets, gloves, bags, luggage, belts)

Shock absorbers; plastic dust cover

Tobacco products; cartoned

Paper Products Cartons (i.e., cardboard flats); corrugated; unassembled in neat piles

Cellulosic paper products; nonwax-coated (e.g., books, cardboard games,cartoned tissue products, magazines, newspapers, paper cups, paper plates,paper towels, plastic-coated paper food containers, stationery)

Rolled; medium or heavyweight; in storage racks or on-side

Tissue products; plastic-wrapped; cartoned

Plastic/Rubber Melamine (melamine formaldehyde)

PCTFE (polychlorotrifluoroethylene)

Phenolic

PTFE (polytetrafluoroethylene)

PVC (polyvinyl chloride) products, up to 20% plasticizer

PVC resins; bagged

PVDC (polyvinylidene chloride)

PVDF (polyvinylidene fluoride)

Urea (urea formaldehyde)

Textile Materials/Products Cloth; natural fibers; baled

Clothing; natural fibers (e.g., wool, cotton) and viscose

Cotton; cartoned

Diapers; cotton or linen

Fabric; synthetic (except rayon and nylon); up to 50/50 blend

Thread or yarn; synthetic (except rayon and nylon); up to 50/50 blend; wood orpaper spools


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Wire/Cable/Spools Spools; wood; empty

Wood Products Wood products (e.g., fiberboard, lumber, particle board, plywood, pressboardwith smooth ends and edges); unbundled or non-solid blocks

Wood products (e.g., toothpicks, clothespins and hangers)






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Public Input No. 309-NFPA 13-2016 [ Section No. A.5.6.3.3.2 ]

A.5.6.3.3.2 [A.20.4.3.1(2)]

Where the commodity includes a single type of plastic, the 5 percent limit applies to the unexpanded orexpanded type, but not both. For commodities with a mixture of expanded and unexpanded plastics, see5.6.3.3.3 [20.4.3.5] and the associated figures.






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A.5.6.3.3.2 3

Where the commodity includes a single type of plastic, the 5 percent limit applies to the unexpanded orexpanded type, but not both. For commodities with a mixture of expanded and unexpanded plastics, see5.6.3.3.3 and the associated figures it can have up to 5% for both types at the same time .


Th first sentence is incorrect an conflicts with Figures 5.6.3.3.3(a) & (b). The second sentence was in the wrong location. Additionally, the current text provided no additional clarification. There is value to stating that both can exist since it is Class IV has the opposite philosophy.




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Submittal Date: Fri Feb 26 17:00:24 EST 2016


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A.5.6.3.4 [A.20.4.4]


Table A.5.6.3.4 Examples 4 [Table A.20.4.4] Examples of Class IV Commodities


Empty Containers PET, bottles or jars

Film Rolls, Including Photographic Film; rolls in polycarbonate plastic cassettes; cartoned

Furniture and Bedding Furniture; wood; plastic coverings nonexpanded plastic trim

Box spring; wrapped in plastic cover

Housing Materials/Appliances Fiberglass insulation; paper-backed rolls; bagged or unbagged

Floor coverings; vinyl, stacked tiles

Paint; oil-based; friction-top metal containers; cartoned

Roofing shingles; asphalt-impregnated felt

Miscellaneous Ammunition; small arms and shotgun; cartoned

Skis; composite materials (plastic, fiberglass, foam, etc.)

Noncombustible LiquidsLiquids or semi-liquids; PET containers greater than 5 ga (20 L)having a nominal wall thickness greater than 0.25 in (6 mm)

Paper Products Cartons (i.e., cardboard flats); corrugated; partially assembled

Cellulosic paper products; wax-coated (paper plates, cups, etc.);nested; cartoned

Matches; paper-type; cartoned

Rolled; lightweight; in storage racks

Plastic/Rubber Cellulose Acetate

Chloroprene rubber

ECTFE (ethylene-chlorotrifluoro-ethylene copolymer)

ETFE (ethylene-tetrafluoroethylene copolymer)

FEP (fluorinated ethylene-propylene copolymer)

Silicone rubber

Powders/Pills Pharmaceuticals pills; plastic bottles or jars; cartoned

Polyvinyl Alcohol (PVA) resins; bagged

Powders; noncombustible; plastic bottles or jars up to 1 gallon (4 L)capacity; cartoned

Textile Materials/Products Cloth; synthetic cloth





Thread or yarn; synthetic (except rayon and nylon); greater than50/50 blend; paper or wood spools

Wire/Cable/Spools Wire or cable; PVC insulated; plastic spools

Wire; bare; plastic spools; cartoned

Wood Products Wood patterns




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A.5.6.4 [A.20.4.5]

The categories listed in 5.6.4.1, 5.6.4.2, and 5.6.4.3 [20.4.5.1, 20.4.5.2.6, and 20.4.5.3.7] are based onunmodified plastic materials. The use of fire- or flame-retarding modifiers or the physical form of thematerial could change the classification.

The addition of fire retardants to plastic should not be relied upon as the sole basis for a reduction inclassification given the unknown performance of the fire retardant under a storage scenario. It is expectedthat full-scale or commodity classification type testing would be necessary to justify any such reduction inclassification. No reduction in classification should be given for plastics simply because they contain a fireretardant.

Plastic materials not specifically classified in 5.6.4 [20.4.5] should be protected as Group A plastics unlessfull-scale or commodity classification type testing demonstrates otherwise. It is not possible to classifyfull-scale fire performance of plastics by looking solely at heat of combustion. Plastic materials should notbe categorized into a Group (A, B, or C) based upon comparing heat of combustion with values for plasticsalready classified in NFPA 13.






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A.5.6.4.1 [A.20.4.5.1]


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See [ Table A. 20.4. 5. 1] Table A.5. 6.4.1.

Table A.5.6.4.1 Examples 1 [Table A.20.4.5.1] Examples of Group A Plastic Commodities

Product Heading Product Expanded / Nonexpanded

BatteriesVehicle; any size (e.g., automobileor truck); empty plastic casing

Nonexpanded

Vehicle; large (e.g. truck or larger);dry or wet (excludes lithium-ionand other cells containingcombustible electrolyte) cells

Nonexpanded

Empty Containers Rigid plastic (not including PET),up to 32 oz (1 L)

Nonexpanded

Rigid plastic (not including PET),greater than 32 oz (1 L)

Expanded


Film (polypropylene, polyesther,polyethylene); rolled on any reeltype

Nonexpanded

Flammable/Combustible Liquids Lighters; butane; blister-packed;cartoned

Nonexpanded

Liquids; up to 20 percent alcohol(e.g. alcoholic beverages, flavoringextracts); greater than 5 gallon(20 L) plastic containers with wallthickness greater than 1⁄4 in.(6 mm)

Nonexpanded

Food Products — Non-Frozen Margarine; over 50 and up to80 percent oil

Nonexpanded

Milk; any container; stored in solidplastic crates

Nonexpanded

Snack foods (e.g., potato chips);plasticized aluminum bags;cartoned

Nonexpanded

Furniture and BeddingFurniture and bedding; with foamcushioning

Expanded

Mattress; foam (in finished form) Expanded

Housing Materials/AppliancesCarpet tiles; cartoned Nonexpanded

Floor coverings; vinyl; rolled Nonexpanded

Miscellaneous Charcoal; mineral spiritimpregnated; bagged

Expanded

Toys; stuffed; foam or synthetic Expanded

Noncombustible Liquids Liquids or semi-liquids; plastic(except PET) containers greaterthan 5 gallon (20 L) capacityhaving a nominal wall thicknessgreater than 1⁄4 in. (6 mm)

Nonexpanded

Liquids; cardboard drink boxes,plastic-coated, wax-coated, and/oraluminum-lined; stored in plasticcontainers

Nonexpanded

Liquids; plastic bottles or jars;stored in open or solid plasticcrates

Nonexpanded


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Paper Products Cartons; wax-coated, single-walledcorrugated

Nonexpanded

Cellulosic paper products;wax-coated (paper plates, cups,etc.); loosely packed; cartoned

Nonexpanded

Matches; wooden; cartoned Nonexpanded

Tissue products; plastic-wrapped;uncartoned

Nonexpanded

Plastic/Rubber ABS (Acrylonitrile-butadiene-styrene copolymer)

Nonexpanded

Acetal (polyformaldehyde) Nonexpanded

Acrylic (polymethyl methacrylate) Nonexpanded

Automobile bumpers anddashboards

Expanded

Butyl rubber Nonexpanded

Cellulose Acetate Butyrate Nonexpanded

Containers; nonexpanded plasticgridded or solid; collapsed ornested with no air spaces

Nonexpanded

EPDM (ethylene-propylene rubber) Nonexpanded

Ethyl Cellulose Nonexpanded

FRP (fiberglass-reinforcedpolyester)

Nonexpanded

Nitrile Rubber (acrylonitrile-butadiene rubber)

Nonexpanded

Nylon (nylon 6, nylon 6/6) Nonexpanded

PET (Polyethylene Terephthalate -thermoplastic polyester)

Nonexpanded

Polybutadiene Nonexpanded

Polycarbonate Nonexpanded

Polyester elastomer Nonexpanded

Polyethylene Nonexpanded

Polypropylene Nonexpanded

Polystyrene; foam products (e.g.,plates, cups, etc.)

Expanded

Polystyrene; rigid products Nonexpanded

Polyurethane Expanded

PVC (polyvinyl chloride) products,greater than 20% plasticizer

Nonexpanded

PVF (polyvinyl fluoride) Nonexpanded

Rubber; natural in blocks; cartoned Nonexpanded

Rubber; natural; expanded Expanded

Rubber; natural; nonexpanded Nonexpanded

Rubber; synthetic (santoprene) Nonexpanded

SAN (styrene acrylonitrile) Nonexpanded

SBR (styrene-butadiene rubber) Nonexpanded


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Plastic Containers Bottles or jars (except PET)greater than 1 gallon (4 L)containing noncombustible solids

Nonexpanded

Bottles or jars (except PET) up to1 gallon (4 L) containingnoncombustible solids (Group A,cartoned (treat as cartoned even ifuncartoned)

Nonexpanded

Powders/Pills Powders; noncombustible; plastic(other than PET) bottles or jars;uncartoned

Nonexpanded

Powders; noncombustible; plasticbottles or jars greater than 1 gallon(4 L) capacity

Nonexpanded

Textile Materials/Products Diapers; plastic or nonwovenfabric; plastic-wrapped;uncartoned

Nonexpanded

Fabric; vinyl-coated (e.g.,tablecloth); cartoned

Nonexpanded

Fabric; synthetic (except rayonand nylon; greater than 50/50blend

Nonexpanded

Fibers; synthetic (except rayonand nylon); baled

Nonexpanded

Thread or yarn; rayon or nylon;plastic spools

Nonexpanded

Thread or yarn; synthetic (exceptrayon and nylon); greater than50/50 blend; plastic spools

Nonexpanded

Thread or yarn; synthetic (exceptrayon and nylon); up to 50/50blend; plastic spools

Nonexpanded

Wax Products Candles Expanded

Paraffin or petroleum wax; blocks Expanded

Wire/Cable/Spools Spools; plastic; empty Nonexpanded

Wire; bare; plastic spools;uncartoned

Nonexpanded






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A.5.6.4.1.1 [A.20.4.5.2]

Generally, expanded plastics are low-density materials and commonly referred to as “foam plastics.”






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A.5.6.5 [A.20.4.8]


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Paper Classification. These classifications were derived from a series of large-scale and laboratory-typesmall-scale fire tests. It is recognized that not all paper in a class burns with exactly the samecharacteristics.

Paper can be soft or hard, thick or thin, or heavy or light and can also be coated with various materials. Thebroad range of papers can be classified according to various properties. One important property is basisweight, which is defined as the weight of a sheet of paper of a specified area. Two broad categories arerecognized by industry — paper and paperboard. Paperboard normally has a basis weight of 20 lb (9.1 kg)

or greater measured on a 1000 ft2 (93 m2) sheet. Stock with a basis weight less than 20 lb/1000 ft2

(0.1 kg/m2) is normally categorized as paper. The basis weight of paper is usually measured on a 3000 ft2

(280 m2) sheet. The basis weight of paper can also be measured on the total area of a ream of paper,which is normally the case for the following types of printing and writing papers:

(1) Bond paper — 500 sheets, 17 in. × 22 in. (425 mm × 550 mm) = 1300 ft2 (121 m2) per ream

(2) Book paper — 500 sheets, 25 in. × 38 in. (625 mm × 950 mm) = 3300 ft2 (310 m2) per ream

(3) Index paper — 500 sheets, 25 1⁄2 in. × 30 1⁄2 in. (640 mm× 765 mm) = 2700 ft2 (251 m2) per ream

(4) Bristol paper — 500 sheets, 22 1⁄2 in. × 35 in. (565 mm × 890 mm) = 2734 ft2 (254 m2) per ream

(5) Tag paper — 500 sheets, 24 in. × 36 in. (600 mm × 900 mm) = 3000 ft2 (280 m2) per ream

For the purposes of this standard, all basis weights are expressed in lb/1000 ft2 (kg/93 m2) of paper. To

determine the basis weight per 1000 ft2 (93 m2) for papers measured on a sheet of different area, thefollowing formula should be applied:

[A.5.6.5a]

Example: To determine the basis weight per 1000 ft2 (93 m2) of 16 lb (7.3 kg) bond paper:

[A.5.6.5b]

Large- and small-scale fire tests indicate that the burning rate of paper varies with the basis weight.Heavyweight paper burns more slowly than lightweight paper. Full-scale roll paper fire tests were conductedwith the following types of paper:

(1) Linerboard — 42 lb/1000 ft2 (0.2 kg/m2) nominal basis weight

(2) Newsprint — 10 lb/1000 ft2 (0.05 kg/m2) nominal basis weight

(3) Tissue — 5 lb/1000 ft2 (0.02 kg/m2) nominal basis weight

The rate of firespread over the surface of the tissue rolls was extremely rapid in the full-scale fire tests. Therate of firespread over the surface of the linerboard rolls was slower. Based on the overall results of thesefull-scale tests, along with additional data from small-scale testing of various paper grades, the broad rangeof papers has been classified into three major categories as follows:

(1) Heavyweight — Basis weight of 20 lb/1000 ft2 (0.098/m2) or greater

(2) Mediumweight — Basis weight of 10 lb to 20 lb/1000 ft2 (0.098 kg/m2)

(3) Lightweight — Basis weight of less than 10 lb/1000 ft2 (0.05 kg/ m2) and tissues regardless of basisweight

The following SI units were used for conversion of U.S. customary units:

1 lb = 0.45 kg

1 in. = 25 mm

1 ft = 0.3 m

1 ft2 = 0.09 m2


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The various types of papers normally found in each of the four major categories are provided in [ TableA. 20.4.8] Table A. 5.6.5.

Table A.5.6.5 Paper 5 [Table A.20.4.8] Paper Classification

Heavyweight Mediumweight Lightweight Tissue

Linerboards Bond and reproduction Carbonizing tissue Toilet tissue

Medium Vellum Cigarette Towel tissue

Kraft roll wrappers Offset Fruit wrap

Milk carton board Tablet Onion skin

Folding carton board Computer

Bristol board Envelope

Tag Book

Vellum bristol board Label

Index Magazine

Cupstock Butcher

Pulp board Bag

Newsprint (unwrapped)






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Public Input No. 128-NFPA 13-2016 [ Sections A.11.2.3.1.5.1, A.11.2.3.1.5.2(4),

A.11.2.3.1.5.2(... ]

Sections A.11.2.3.1.5.1, A.11.2.3.1.5.2(4), A.11.2.3.1.5.2(10)

A.11.2.3. 1.5 8 .1

This section is included to compensate for possible delay in operation of sprinklers from fires in combustibleconcealed spaces found in wood frame, brick veneer, and ordinary construction.

In order for the minimum 3000 ft2 (279 m2) requirement for the size of the remote area to not be extendedto the adjacent area, the qualifying concealed space must be separated by the entire fire-rated assembly.Such assemblies often have combustible structural members separating the exterior membranes that cancreate a concealed combustible space that can qualify for omitting sprinkler protection. If the fire-ratedassembly is the qualifying concealed space, an interior fire would greatly reduce the assigned fire-ratedduration.

A.11.2.3. 1.5 8 .2(4 9 )

Composite wood joists are not considered solid wood joists for the purposes of this section. Their webmembers are too thin and easily penetrated to adequately compartment a fire in an unsprinklered space.Application of this item is not affected by the depth of the joist channel except in determining the volume.The concealed space above the insulation can be an attic, roof space, or floor space within a floorassembly.

A.11.2.3. 1.5 8 .2(10)

The gypsum board (or equivalent material) used as the firestopping will compartment the concealed space

and restrict the ability for fire to spread beyond 160 ft3 (4.5 m3) zones covering multiple joist channels.



PC_204.pdf 13-PC_204



The redundancy task group agrees with this PC. Moved location of annex text to correlate with relocation of text to section 11.1. The format is hard to read but the new locations are: A.11.1.8.1 / A.11.1.8.2(9) / A/11.1.8.2(10) The text between A.11.2.3.1.4(3) / A.11.2.3.1.4(4)(d) / A.11.2.3.1.4(4)(j) and A.12.9.1 / A.12.9.2(4) / A.12.9.2(10) are identical except that chap 12 is missing the first paragraph of ch 11 explaining why a larger area is needed.



Organization: NFPA


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Public Comment No. 204-NFPA 13-2014 [ Sections A.11.2.3.1.4(3), A.11.2.3.1.4(4)(d),

A.11.2.3.1.4(... ]

Sections A.11.2.3.1.4(3), A.11.2.3.1.4(4)(d), A.11.2.3.1.4(4)(j)

A.11.2 1 .3 8 .1.4(3)

This section is included to compensate for possible delay in operation of sprinklers from fires in combustibleconcealed spaces found in wood frame, brick veneer, and ordinary construction.

In order for the minimum 3000 ft2 (279 m2) requirement for the size of the remote area to not be extended tothe adjacent area, the qualifying concealed space must be separated by the entire fire-rated assembly. Suchassemblies often have combustible structural members separating the exterior membranes that can create aconcealed combustible space that can qualify for omitting sprinkler protection. If the fire-rated assembly is thequalifying concealed space, an interior fire would greatly reduce the assigned fire-rated duration.

A.11.2 1 .3 8 .1.4 2 (4 9 )(d)

Composite wood joists are not considered solid wood joists for the purposes of this section. Their web membersare too thin and easily penetrated to adequately compartment a fire in an unsprinklered space. Application ofthis item is not affected by the depth of the joist channel except in determining the volume. The concealedspace above the insulation can be an attic, roof space, or floor space within a floor assembly.

A.11.2 1 .3 8 .1.4 2 (4 10 )(j)

The gypsum board (or equivalent material) used as the firestopping will compartment the concealed space and

restrict the ability for fire to spread beyond 160 ft3 (4.5 m3) zones covering multiple joist channels.


The redundancy task group agrees with this PC.

Moved location of annex text to correlate with relocation of text to section 11.1. The format is hard to read but the new locations are: A.11.1.8.1 / A.11.1.8.2(9) / A/11.1.8.2(10)

The text between A.11.2.3.1.4(3) / A.11.2.3.1.4(4)(d) / A.11.2.3.1.4(4)(j) and A.12.9.1 / A.12.9.2(4) / A.12.9.2(10) are identical except that chap 12 is missing the first paragraph of ch 11 explaining why a larger area is needed.




Public Comment No. 112-NFPA 13-2014 [Section No. 11.2.3.1.4]

Public Comment No. 205-NFPA 13-2014 [Section No. A.12.9.1]

Related Item





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Committee Statement

CommitteeAction:

Rejected but held






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A.12.1.1.1 [A.20.6.5.1]

Sprinkler protection criteria are based on the assumption that roof vents and draft curtains are not beingused. (See Section C.6.)






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A.12.1.1.3 [A.20.6.5.3]

Draft curtains have been shown to have a negative effect on sprinkler effectiveness. If they are mandated,extreme care needs to be taken to minimize any potential impacts.






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A.12.1.3 [A.20.6.2]

The fire protection system design should consider the maximum storage height. For new sprinklerinstallations, maximum storage height is the usable height at which commodities can be stored above thefloor while the minimum required unobstructed space below sprinklers is maintained. Where evaluatingexisting situations, maximum storage height is the maximum existing storage height if space between thesprinklers and storage is equal to or greater than that required.

Building heights where baled cotton is stored should allow for proper clearance between the pile height andsprinkler deflectors. Fire tests of high-piled storage have shown that sprinklers are generally more effectiveif located 1 1⁄2 ft to 4 1⁄2 ft (0.45 m to 1.4 m) above the storage height.






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A.12.1.3.1.4 [A.20.6.2.5]

In the example shown in [ Figure A. 20.6.2.5] Figure A. 12.1.3.1.4, the maximum ceiling height shown is30 ft (9.1 m). Sprinkler protection under the highest part of the ceiling must be designed for that height to apoint at least 15 ft (4.6 m) beyond where the ceiling height drops to 25 ft (7.6 m). Sprinkler protectionbeyond that point can be designed for a 25 ft (7.6 m) ceiling.

Figure A.12.1.3.1.4 Extended 4 [Figure A.20.6.2.5] Extended Sprinkler Coverage Under SlopedCeilings.






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A.12.1.3.4.1 [A.20.6.4.1]

Batt insulation creates an effective thermal barrier and can be considered the ceiling/roof deck whendetermining the clearance to ceiling. The insulation needs to be installed in each pocket (not just above thesprinkler) and attached to the ceiling/roof in such a manner that it will not fall out during a fire prior tosprinkler activation.






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A.12.1.4.1 [A.20.6.6.1]

A series of 10 full-scale fire tests and limited-scale testing were conducted to determine the impact of HVLSfan operation on the performance of sprinkler systems. The project, sponsored by the Property InsuranceResearch Group (PIRG) and other industry groups, was coordinated by the Fire Protection ResearchFoundation (FPRF). The complete test report, High Volume/Low Speed Fan and Sprinkler Operation — Ph.2 Final Report (2011), is available from the FPRF. Both control mode density area and early suppressionfast response sprinklers were tested. Successful results were obtained when the HVLS fan was shut downupon the activation of the first sprinkler followed by a 90-second delay. Other methods of fan shutdownwere also tested including shutdown by activation of air sampling–type detection and ionization-type smokedetectors. Earlier fan shutdown resulted in less commodity damage.






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A.12.2 [A.20.11]

Authorities having jurisdiction have varying requirements for plant first-aid and fire-fighting operations.Examples include no hose stations, hose stations with hose line and nozzles, and hose stations with nohose line or nozzles.






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A.12 11 .3 2

The situation frequently arises where a small area of a higher hazard is surrounded by a lesser hazard. For

example, consider a 600 ft 2 (56 m 2 ) area consisting of 10 ft (3 m)high on-floor storage of cartonedunexpanded plastic commodities surrounded by a plastic extruding operation in a 15 ft (4.6 m) highbuilding. In accordance with Chapter 12, the density required for the plastic storage must meet therequirements for extra hazard (Group 1) occupancies. The plastic extruding operation should be consideredan ordinary hazard (Group 2) occupancy. In accordance with Chapter 11, the corresponding discharge

densities should be 0.3 gpm/ft 2 (12.2 mm/min) over 2500 ft 2 (232 m 2 ) for the storage and 0.2 gpm/ft 2

(8.1 mm/min) over 1500 ft 2 (139 m 2 ) for the remainder of the area. (Also see Chapter 11 for the requiredminimum areas of operation.)

If the storage area is not separated from the surrounding area by a wall or partition (see 11.1.2 ), the sizeof the operating area is determined by the higher hazard storage.

For example, the operating area is 2500 ft 2 (232 m 2 ). The system must be able to provide the

0.3 gpm/ft 2 (12.2 mm/min) density over the storage area and 15 ft (4.6 m) beyond. If part of the remote

area is outside the 600 ft 2 (55.5 m 2 ) plus the 15 ft (4.6 m) overlap, only 0.2 gpm/ft 2 (8.1 mm/min) isneeded for that portion.

If the storage is separated from the surrounding area by a floor-to-ceiling/roof partition that is capable ofdelaying heat from a fire on one side from fusing sprinklers on the other side, the size of the operating area

is determined by the occupancy of the surrounding area. In this example, the design area is 1500 ft 2

(139 m 2 ). A 0.3 gpm/ft 2 (12.2 mm/min) density is needed within the separated area with 0.2 gpm/ft 2

(8.1 mm/min) in the remainder of the remote area.

Where high temperature–rated sprinklers are installed at the ceiling, high temperature–rated sprinklers alsoshould extend beyond storage in accordance with Table A.12.3 .

When the small higher hazard area is larger than the required minimum area dictated by the surroundingoccupancy, even when separated by draft curtains, barriers, or partitions capable of delaying heat, the sizeof the operating area is determined by the higher hazard storage.

Table A.12.3 Extension 11.1.2 Extension of Installation of High-Temperature Sprinklers over Storage

Design Area for High Temperature–RatedSprinklers

Distance Beyond Perimeter of High Hazard

Occupancy for High Temperature–RatedSprinklers

ft2 m2 ft m

2000 186 30 9.1

3000 280 40 12

4000 370 45 14

5000 465 50 15

6000 555 55 17



PC_231.pdf 13-PC_231



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Public Comment No. 231-NFPA 13-2014 [ Section No. A.12.3 ]


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A.12.3


example, consider a 600 ft 2 (55.7 m 2 ) area consisting of 10 ft (3.05 m) high on-floor storage of cartonedunexpanded plastic commodities surrounded by a plastic extruding operation in a 15 ft (4.57 m) high building. Inaccordance with Chapter 12, the density required for the plastic storage must meet the requirements for extrahazard (Group 1) occupancies. The plastic extruding operation should be considered an ordinary hazard(Group 2) occupancy. In accordance with Chapter

11

, the corresponding discharge densities should be 0

.

3 gpm/ft 2 (12.2 mm/min) over 2500 ft 2 (232 m 2 ) for the storage and 0.2 gpm/ft 2 (8.

1

mm/min) over 1500 ft 2 (139 m 2 ) for the remainder of the area

.

(Also see Chapter 11 for the required minimum areas of operation.)

If the storage area is not separated from the surrounding area by a wall or partition (see 11.1.2 ), the size ofthe operating area is determined by the higher hazard storage.

For example, the operating area is 2500 ft 2 (232 m 2 ). The system must be able to provide the 0.3 gpm/ft 2

(12.2 mm/min) density over the storage area and 15 ft (4.57 m) beyond. If part of the remote area is outside the

600 ft 2 (55.7 m 2 ) plus the 15 ft (4.57 m) overlap, only 0.2 gpm/ft 2 (8.1 mm/min) is needed for that portion.

If the storage is separated from the surrounding area by a floor-to-ceiling/roof partition that is capable ofdelaying heat from a fire on one side from fusing sprinklers on the other side, the size of the operating area is

determined by the occupancy of the surrounding area. In this example, the design area is 1500 ft 2 (139 m 2 ).

A 0.3 gpm/ft 2 (12.2 mm/min) density is needed within the separated area with 0.2 gpm/ft 2 (8.1 mm/min) in theremainder of the remote area.

2

Where high temperature–rated sprinklers are installed at the ceiling, high temperature–rated sprinklers alsoshould extend beyond storage in accordance with Table A.12.3.

When the small higher hazard area is larger than the required minimum area dictated by the surroundingoccupancy, even when separated by draft curtains, barriers, or partitions capable of delaying heat, the size ofthe operating area is determined by the higher hazard storage.

Table A.12.3 Extension 11.1.2 Extension of Installation of High-Temperature Sprinklers over Storage



Occupancy or Storage for High Temperature–RatedSprinklers

ft2 m2 ft m

2000 185.8 30 9.14

3000 278.7 40 12.2

4000 371.6 45 13.72

5000 464.5 50 15.24

6000 557.4 55 16.76


Redundancy task group initiated this PC


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Text identical to A.11.1.2 except last paragraph and Table. Note that the Table refer to an occupancy verses storage.




Related Item





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Committee Statement

CommitteeAction:

Rejected but held






3 of 3 5/13/2016 2:45 PM

Page 1029 of 1114


Redundancy task group initiated this PC Text identical to A.11.1.2 except last paragraph and Table. Note that the Table refer to an occupancy verses storage.



Organization: NFPA


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A.12.3 [A.20.10]


example, consider a 600 ft2 (56 m2) area consisting of 10 ft (3 m)high on-floor storage of cartonedunexpanded plastic commodities surrounded by a plastic extruding operation in a 15 ft (4.6 m) highbuilding. In accordance with Chapter 12, the density required for the plastic storage must meet therequirements for extra hazard (Group 1) occupancies. The plastic extruding operation should be consideredan ordinary hazard (Group 2) occupancy. In accordance with Chapter 11, the corresponding discharge

densities should be 0.3 gpm/ft2 (12.2 mm/min) over 2500 ft2 (232 m2) for the storage and 0.2 gpm/ft2

(8.1 mm/min) over 1500 ft2 (139 m2) for the remainder of the area. (Also see Chapter 11 for the requiredminimum areas of operation.)

If the storage area is not separated from the surrounding area by a wall or partition (see 11.1.2), the size ofthe operating area is determined by the higher hazard storage.

For example, the operating area is 2500 ft2 (232 m2). The system must be able to provide the 0.3 gpm/ft2

(12.2 mm/min) density over the storage area and 15 ft (4.6 m) beyond. If part of the remote area is outside

the 600 ft2 (55.5 m2) plus the 15 ft (4.6 m) overlap, only 0.2 gpm/ft2 (8.1 mm/min) is needed for thatportion.

If the storage is separated from the surrounding area by a floor-to-ceiling/roof partition that is capable ofdelaying heat from a fire on one side from fusing sprinklers on the other side, the size of the operating area

is determined by the occupancy of the surrounding area. In this example, the design area is 1500 ft2

(139 m2). A 0.3 gpm/ft2 (12.2 mm/min) density is needed within the separated area with 0.2 gpm/ft2

(8.1 mm/min) in the remainder of the remote area.

Where high temperature–rated sprinklers are installed at the ceiling, high temperature–rated sprinklers alsoshould extend beyond storage in accordance with [ Table A. 20.10] Table A. 12.3.

When the small higher hazard area is larger than the required minimum area dictated by the surroundingoccupancy, even when separated by draft curtains, barriers, or partitions capable of delaying heat, the sizeof the operating area is determined by the higher hazard storage.

Table A.12.3 Extension 3 [Table A.20.10] Extension of Installation of High-Temperature Sprinklers overStorage



Occupancy for High Temperature–RatedSprinklers

ft2 m2 ft m

2000 186 30 9.1

3000 280 40 12

4000 370 45 14

5000 465 50 15

6000 555 55 17





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A.12.4 [A.20.13.2]

Wet systems are recommended for storage occupancies. Dry pipe systems should be permitted only whereit is impractical to provide heat.






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A.12.4.2 [A.20.13.2.2]

Wet systems are recommended for rack storage occupancies. Dry systems are permitted only where it isimpractical to provide heat. Preaction systems should be considered for rack storage occupancies that areunheated, particularly where in-rack sprinklers are installed or for those occupancies that are highlysusceptible to water damage.






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A.12.6


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The reasons for using larger orifice sprinklers in storage situations are based on a number of fire tests inrecent years that continue to show an advantage of the larger orifice [K-11.2 (161) and K-16.8 (242)]sprinklers over the K-5.6 (80) and even the K-8 (115) orifice sprinklers. Following are four sets of fire testcomparisons using constant densities [see Table A.12.6(a) and Table A.12.6(b) ]:

Table A.12.6(a) Ceiling Type

Fire TypeCeiling

Type

Sprinkler Distance Below Ceiling [in.(mm)]

Time to

Activation(seconds)

Size of Fire

atActivation

[Btu/s (kW)]

Fast-

growingfire

Insulateddeck

1 (25) 76 450 (475)

Steel 1 (25) 97 580 (612)

Wood 1 (25) 71 420 (443)

Insulateddeck

12 (300) 173 1880 (1985)

Steel 12 (300) 176 1930 (2035)

Wood 12 (300) 172 1900 (475)

Slow-

growingfire

Insulateddeck

1 (25) 281 220 (232)

Steel 1 (25) 375 390 (411)

Wood 1 (25) 268 200 (211)

Insulateddeck

12 (300) 476 630 (665)

Steel 12 (300) 492 675 (712)

Wood 12 (300) 473 620 (654)

Table A.12.6(b) Ceiling Arrangement

Situation Fire Time to Activate Sprinkler (seconds)

Fire Size

at Time of Activation

[Btu/s (kW)]

Ceiling with pocket Fast 86 to 113 585 (617)

Sprinkler 12 in. below ceiling Fast 172 to 176 1880 to 1900 (1985 to 2005)

Ceiling with pocket Slow 288 to 395 490 (517)

Sprinkler 12 in. below ceiling Slow 473 to 492 620 to 675 (654 to 712)

(1) K-5.6 (80) vs. K-11.2 (161)

(2) Commodity — idle wood two-way pallets

(3) 2 stacks × 3 stacks × 8 ft (2.4 m) high

(4) Ceiling height — 30 ft (9.1 m)

(5) Density — constant 0.30 gpm/ft 2 (12.2 mm/min)

(6) Test #1 — 165°F (74°C) rated, K-11.2 sprinklers


(8) Test #1 results — 4 A.S. operated

(9) Test #2 results — 29 A.S. operated, less fire control and greater temperatures

(10) K-8.0 vs. K-11.2 vs. K-16.8

(11) Commodity — idle wood four-way pallets


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(12) Two stacks × three stacks × 12 ft high (3.7 m)

(13) Ceiling height — 30 ft (9 m)

(14) Density — constant 0.6 gpm/ft 2 (24.4 mm/min)

(15) Test #1 — 286°F (141°C) rated, K-8 sprinklers



(18) Test #1 results — 10 A.S. operated, 1215°F (658°C) maximum steel temperature, fire spread toall sides

(19) Test #2 results — 13 A.S. operated, 200°F (94°C) maximum steel temperature, fire spread tothree sides

(20) Test #3 results — 6 A.S. operated, 129°F (54°C) maximum steel temperature, fire spread (justreached) one side

(21) K-5.6 vs. K-16.8

(22) Commodity — FMRC standard plastic commodity rack style 9 ft (2.7 m) high


(24) Density — 0.45 gpm/ft 2 (18.3 mm/min)

(25) Test #1 — K-5.6 orifice sprinklers

(26) Test #2 — K-16.8 orifice sprinklers

(27) Test #1 results — 29 A.S. operated, 14 pallet loads consumed


(29) K-8.0 vs. K-16.8

(30) Commodity — FMRC standard plastic commodity rack stage 14 ft (4.3 m) high


(32) Density — 0.60 gpm/ft 2 (24.4 mm/min)

(33) Test #1 — K-8.0 sprinklers

(34) Test #2 — K-16.8 sprinklers



On an equal density basis, the fire test comparisons show the advantage of the larger orifices. A possiblyeven bigger advantage can be seen when investigating the performance of larger orifice sprinklers in thereal world condition of high initial operating pressures.

The volume of water discharged through the larger K-factor for the initial sprinklers has three significanteffects:

(1) First, the increase in sheer volume flowing through the larger orifice enhances performance. Forexample, a 165 psi (11.4 bar) initial operating pressure would provide 102.8 gpm (390 L/min)from aK-8, while the K-16.8 will discharge 215.8 gpm (815 L/min).

(2) Second, fire testing at high pressures [100 + psi (6.9 bar)] with K-5.6 and K-8 (when high fire updraftsoccur) has shown less water penetration and more sprinkler skipping. When fire testing the K-11 andK-16.8 sprinklers at 100 + psi (6.9 bar), more water penetration is evident and little or no sprinklerskipping has occurred.

(3) Third, with such high initial discharge rates among K-16.8 sprinklers, the friction loss in the supplypipes would be greater. This would result in lower initial pressures than a K-8 as well as being farther


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down the water supply curve with greater flows resulting in lower initial operating pressures.

Figure A.12.6 highlights the differences between the K-8 and K-16.8 initial operating pressures.

Figure A.12.6 Available Pressure Comparison.

The higher flow rate of the K-16.8 sprinkler results in greater friction losses in the initial operating heads ascompared to the K-8 sprinkler. Combined with the lower pressure available on the water supply curve, theend result is a self-regulating K-factor allowing greater initial pressures without a negative impact.

Table A.12.6(c) summarizes the paper product testing.

Table A.12.6(c) Paper Product Testing Results

Test Date

Test Parameters 3/25/98 3/18/98* 4/4/98 6/4/98†

Sprinklers K-8 K-8 K-11 K-16.8

Temperature 286°F (141°C)) 286°F (141°C) 165°F (74°C) 155°F (68°C)

Storage Type 4 tier pyramid 5 tier pyramid 4 tier pyramid 5 tier pyramid

Storage Height 16 ft (4.9 m) 22 ft (6.7 m) 16 ft (4.9 m) 22 ft (6.7 m)

Ceiling Height 30 ft (9.1 m) 31 ft (9.1 m) 30 ft (9.1 m) 31 ft (9.1 m)

Sprinkler Flow Pressure 22.6 psi (1.6 bar) 175 psi (12.1 bar) 11.9 psi (0.82 bar) 130 psi (9.0 bar)

Number of Operated Sprinklers 15 2 10 2

Peak Gas Temperature — 868°F (464°C) — 424°F (217°C)

Peak Steel Temperature — 421°F (216°C) — 113°F (45°C)

Fire Spread Across Aisle (30 in.) N/A Yes N/A No

*This test was run with a fire brigade response of 20:00 minutes.

†This test was run with a fire brigade response of 7:00 minutes.

The results. The tests indicated that even at a high temperature of 286°F (141°C), the K-8 sprinklersoperating at higher pressures were not effective in controlling the fire. Conversely, the K-16.8 sprinkler wasable to control the fire at the lower temperature [155°F (68°C)], by operating sooner, and at lower,self-regulating flowing pressures.

Conclusions. The larger K-factor of the K-16.8 sprinkler is not affected by high initial operating pressures. Infact, the protection is enhanced, providing better fire protection.

The ability to use lower-rated temperatures, such as 155°F (68°C) in lieu of 286°F (141°C), shows that theperformance of the initial operating sprinklers is effective in controlling the fire. Therefore, usinghigh-temperature heads temperature sprinklers to reduce the number of surrounding rings of sprinklers toopen is not necessary when using the K-16.8 technology.


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In short, the K-16.8 sprinkler proved highly effective when subjected to high initial operating pressures.


NFPA 13 does not define what a sprinkler head is. Change the term to sprinkler. The only change is located in the next to the last paragraph. Terraview has underlined all the tables.




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Submittal Date: Mon Jan 04 14:18:07 EST 2016


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A.12.7.2 [A.20.10.4]

When a light hazard occupancy, such as a school, contains separate ordinary hazard storage rooms no

more than 400 ft2 (37 m2), the hose stream demand would be that required for a light hazard occupancy.






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Public Input No. 337-NFPA 13-2016 [ Section No. A.12.7.2(3) ]

A.12.7.2(3) [A.20.10.4(3)]

When a light hazard occupancy, such as a school, contains separate ordinary hazard rooms no more than

400 ft2 (37 m2), the hose stream allowance and water supply duration would be that required for a lighthazard occupancy.






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A.12.8.1 [A.20.12.2.1]

Where tanks serve sprinklers only, they can be sized to provide the duration required for the sprinklersystem, ignoring any hose stream demands. Where tanks serve some combination of sprinklers, insidehose stations, outside hose stations, or domestic/process use, the tank needs to be capable of providingthe duration for the equipment that is fed from the tank, but the demands of equipment not connected to thetank can be ignored. Where a tank is used for both domestic/process water and fire protection, the entireduration demand of the domestic/process water does not need to be included in the tank if provisions aremade to segregate the tank so that adequate fire protection water is always present or if provisions aremade to automatically cut off the simultaneous use in the event of fire.






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Public Input No. 130-NFPA 13-2016 [ Sections A.12.8.1, A.12.8.2 ]

Sections A.12.8.1, A.12.8.2

A.12.8.1

Where tanks serve sprinklers only, they can be sized to provide the duration required for the sprinklersystem, ignoring any hose stream demands. Where tanks serve some combination of sprinklers, insidehose stations, outside hose stations, or domestic/process use, the tank needs to be capable of providingthe duration for the equipment that is fed from the tank, but the demands of equipment not connected tothe tank can be ignored. Where a tank is used for both domestic/process water and fire protection, theentire duration demand of the domestic/process water does not need to be included in the tank ifprovisions are made to segregate the tank so that adequate fire protection water is always present or ifprovisions are made to automatically cut off the simultaneous use in the event of fire.

A.12.8.2

Where pumps serve sprinklers only, they can be sized to provide the flow required for the sprinkler system,ignoring any hose stream demands. Where pumps serve some combination of sprinklers, inside hosestations, or outside hose stations, the pump needs to be capable of providing the flow for the equipmentthat is fed from the pump, but the demands of equipment not connected to the pump can be ignored.



PC_203.pdf 13-PC_203



This PC was initiated by the redundancy task group Deletion of annex correlates with deleting 12.8.1 and 12.8.2. This text is identical to A.11.1.5.2 and A.11.1.5.3 except A.12.8.2 is missing a portion of the last sentence in A.11.1.5.3: ....except for evaluating their impact on the available water supply to the pump."



Organization: NFPA


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Public Comment No. 203-NFPA 13-2014 [ Sections A.12.8.1, A.12.8.2 ]

Sections A.12.8.1, A.12.8.2

A.12.8.1

Where tanks serve sprinklers only, they can be sized to provide the duration required for the sprinkler system,ignoring any hose stream demands. Where tanks serve some combination of sprinklers, inside hose stations,outside hose stations, or domestic/process use, the tank needs to be capable of providing the duration for theequipment that is fed from the tank, but the demands of equipment not connected to the tank can be ignored.Where a tank is used for both domestic/process water and fire protection, the entire duration demand of thedomestic/process water does not need to be included in the tank if provisions are made to segregate the tankso that adequate fire protection water is always present or if provisions are made to automatically cut off thesimultaneous use in the event of fire.

A.12.8.2

Where pumps serve sprinklers only, they can be sized to provide the flow required for the sprinkler system,ignoring any hose stream demands. Where pumps serve some combination of sprinklers, inside hose stations,or outside hose stations, the pump needs to be capable of providing the flow for the equipment that is fed fromthe pump, but the demands of equipment not connected to the pump can be ignored.


This PC was initiated by the redundancy task group

Deletion of annex correlates with deleting 12.8.1 and 12.8.2. This text is identical to A.11.1.5.2 and A.11.1.5.3 except A.12.8.2 is missing a portion of the last sentence in A.11.1.5.3: ....except for evaluating their impact on the available water supply to the pump."



Public Comment No. 110-NFPA 13-2014 [Sections 12.8.1, 12.8.2, 12.8.3, 12.8.4, 12.8.5]

Related Item





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Committee Statement

CommitteeAction:

Rejected but held

Resolution: The concept of limiting the redundancy in chapters 12-21 of NFPA has been discussed throughout thisrevision cycle. While the TC is in general support of this concept, making these redundancy revisions atthe Second Phase of the cycle is not appropriate. The reject but hold action for this item will allow theTC on Discharge Criteria to submit the concept to the correlating committee for review and refinement


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before proceeding into the 2019 edition revision cycle.





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A.12.8.2 [A.20.12.2.2]

Where pumps serve sprinklers only, they can be sized to provide the flow required for the sprinkler system,ignoring any hose stream demands. Where pumps serve some combination of sprinklers, inside hosestations, or outside hose stations, the pump needs to be capable of providing the flow for the equipmentthat is fed from the pump, but the demands of equipment not connected to the pump can be ignored.






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A.12.9.1 [A.20.7.1]

In order for the minimum 3000 ft2 (279 m2) requirement for the size of the remote area to not be extendedto the adjacent area, the qualifying concealed space must be separated by the entire fire-rated assembly.Such assemblies often have combustible structural members separating the exterior membranes that cancreate a concealed combustible space that can qualify for omitting sprinkler protection. If the fire-ratedassembly is the qualifying concealed space, an interior fire would greatly reduce the assigned fire-ratedduration.






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A.12.10.1 [A.20.8.1]

This subsection allows for calculation of the sprinklers in the largest room, so long as the calculationproduces the greatest hydraulic demand among selection of rooms and communicating spaces. Forexample, in a case where the largest room has four sprinklers and a smaller room has two sprinklers butcommunicates through unprotected openings with three other rooms, each having two sprinklers, thesmaller room and group of communicating spaces should also be calculated.

Corridors are rooms and should be considered as such.

Walls can terminate at a substantial suspended ceiling and need not be extended to a rated floor slababove for this section to be applied.






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A.12.11 [A.20.9]

Detection systems, concentrate pumps, generators, and other system components that are essential to theoperation of the system should have an approved standby power source.

Where high-expansion foam is contemplated as the protection media, consideration should be given topossible damage to the commodity from soaking and corrosion. Consideration also should be given to theproblems associated with the removal of the foam after discharge.






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A.12.12 [A.20.14]


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Idle pallet storage introduces a severe fire condition. Stacking idle pallets in piles is the best arrangement ofcombustibles to promote rapid spread of fire, heat release, and complete combustion. After pallets are usedfor a short time in warehouses, they dry out and edges become frayed and splintered. In this condition, theyare subject to easy ignition from a small ignition source. Again, high piling increases considerably both thechallenge to sprinklers and the probability of involving a large number of pallets when fire occurs.Therefore, it is preferable to store pallets outdoors where possible.

A fire in stacks of idle plastic or wood pallets is one of the greatest challenges to sprinklers. The undersidesof the pallets create a dry area on which a fire can grow and expand to other dry or partially wet areas. Thisprocess of jumping to other dry, closely located, parallel, combustible surfaces continues until the fire burststhrough the top of the stack. Once this happens, very little water is able to reach the base of the fire. Theonly practical method of stopping a fire in a large concentration of pallets with ceiling sprinklers is by meansof prewetting. In high stacks, this cannot be done without abnormally high water supplies. The storage ofempty wood pallets should not be permitted in an unsprinklered warehouse containing other storage.

A series of seven large-scale fire tests involving idle wood pallets stored on the floor was conducted atUnderwriters Laboratories in 2009 and 2010. This testing was conducted to investigate the performance ofan upright sprinkler having a nominal K-factor of 11.2 (160) when installed to protect a 8 ft (2.4 m) higharray of new 4-way entry, softwood pallets under a 30 ft (9.1 m) ceiling. The pallets used for this test serieswere supplied by CHEP USA. The impact of the sprinkler temperature rating on fire control performancewas the key variable investigated during this test series. Except for the temperature rating of the sprinkler’sheat responsive element, the same sprinkler design was used for all seven tests. Three tests wereconducted using 286°F (141°C) temperature-rated sprinklers, two tests were conducted using 200°F (93°C)temperature-rated sprinklers, and two tests conducted using 155°F (68°C) temperature-rated sprinklers.The ignition location for all tests was centered between four sprinklers. To enhance test repeatability, thefour sprinklers nearest the ignition location were arranged to discharge water when the first sprinkleroperated. The results of this test series are summarized in [ Table A. 20.14] Table A. 12.12.

The results of this large-scale fire test series indicated that sprinklers in the 155°F (68°C) and 200°F (93°C)temperature ratings performed significantly better than the 286°F (141°C) temperature-rated sprinklers asevidenced by a reduced number of operated sprinklers and lower steel temperatures.

Table A.12.12 Summary 12 [Table A.20.14] Summary of Fire Test Data for Idle Pallets (4-Way EntrySoftwood) Stored on Floor

TestDate

Test Array

NominalStorageHeight ft

(m)

CeilingHeightft (m)

SprinklerInformation

Number ofOperatedSprinklers

Time ofFirst

SprinklerOperation(min:sec)

Time ofLast


Max. 1Min.Ave.SteelTemp.ºF (ºC)

9/1/2009

2 × 3 with6 in.(150 mm)longitudinalflue mainarray

2 × 1 targetpallets oneach endwith 6 in.(150 mm)longitudinalandtransverseflues

8 (2.4) 30 (9.1)

286ºF, K-11.2,

0.45 gpm/ft2

(141ºC,K-160,

18.3 mm/min)

12 5:00 23:03220(104)

9/10/2009


8 (2.4) 30 (9.1)

286ºF, K-11.2,

0.45 gpm/ft2

(141ºC,K-160,

18.3 mm/min)

13 5:05 19:10208(98)


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TestDate

Test Array


(m)

CeilingHeightft (m)



Time ofFirst


Time ofLast




9/11/2009



8 (2.4) 30 (9.1)

286ºF, K-11.2,

0.45 gpm/ft2

(141ºC,K-160,

18.3 mm/min)

16 5:48 19:04228(109)

6/21/2010



8 (2.4) 30 (9.1)

200ºF, K-11.2,

0.45 gpm/ft2

(93ºC, K-160,18.3 mm/min)

4 4:10 4:10134(57)

6/22/2010


2 × 1 targetpallets oneach endwith 6 in.(150 mm)longitudinaland

8 (2.4) 30 (9.1)

200ºF, K-11.2,

0.45 gpm/ft2

(93ºC, K-160,18.3 mm/min)

4 3:34 3:34135(57)


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TestDate

Test Array


(m)

CeilingHeightft (m)



Time ofFirst


Time ofLast



transverseflues

6/23/2010



8 (2.4) 30 (9.1)

155ºF, K-11.2,

0.45 gpm/ft2

(68ºC, K-160,18.3 mm/min)

4 3:46 3:46115(46)

6/23/2010



8 (2.4) 30 (9.1)

155ºF, K-11.2,

0.45 gpm/ft2

(68ºC, K-160,18.3 mm/min)

4 3:09 3:09113(45)






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A.12.12.1.1 [A.20.14.1.1]

Table A.12.12.1.1(a) [Table A.20.14.1.1(a)] gives recommended clearances between outside idle woodpallet storage and a building. If plastic pallets are stored outdoors, consideration should be given to theanticipated radiated heat produced by the materials used to construct the pallet to establish the appropriateseparation distance. [See Table A.12.12.1.1(b) .[Table A.20.14.1.1(b) ]]

Table A.12.12.1.1(a) Control [Table A.20.14.1.1(a)] Control Mode Density/Area Sprinkler Protection forIndoor Storage of Idle Wood Pallets

Type ofSprinkler

Locationof

Storage

NominalK-Factor


MaximumCeiling/Roof

Height

SprinklerDensity

Area ofOperation

HoseStream

Allowance

WSu

Dur(hoft m ft m gpm/ft2 mm/min ft2 m2 gpm L/min

Controlmodedensity/area

On floor8 (115) orlarger

Upto 6

Up to1.8

20 6.1 0.2 8.2 3000* 279* 500 1900 1 1⁄2


Upto 8

Up to2.4

30 9.1 0.45 18.3 2500 232 500 1900 1 1⁄2

On flooror rackwithoutsolidshelves

11.2 (160)or larger

>8to12

>2.4to 3.7

30 9.1 0.6 24.5 3500 325 500 1900 1 1⁄2

>12to20

>3.7to 6.1

30 9.1 0.6 24.5 4500 418 500 1900 1 1⁄2

On floor16.8(240) orlarger

Upto20

Up to6.1

30 9.1 0.6 24.5 2000 186 500 1900 1 1⁄2

*The area of sprinkler operation can be permitted to be reduced to 2000 ft2 (186 m2) when sprinklershaving a nominal K-factor of 11.2 (160) or larger are used, or if high temperature–rated sprinklers having anominal K-factor of 8.0 (115) are used.

Table A.12.12.1.1(b) Recommended [Table A.20.14.1.1(b)] Recommended Clearance BetweenOutside Idle Wood Pallet Storage and Building

Minimum Distance Between Wall and Storage

Wall ConstructionUnder

50 Pallets50 to

200 PalletsOver

200 Pallets

WallType

Openings ft m ft m ft m

Masonry None 0 0 0 0 0 0

Wired glass with outside sprinklers

and 1-hour doors0 0 10 3.0 20 6.1

Wired or plain glass with outside sprinklersand 3⁄4 -hour doors

10 3.0 20 6.1 30 9.1

Wood or metal with outside sprinklers 10 3.0 20 6.1 30 9.1

Wood, metal, or other 20 6.1 30 9.1 50 15

Notes:

(1) Fire-resistive protection comparable to that of the wall also should be provided for combustible eaveslines, vent openings, and so forth.

(2) Where pallets are stored close to a building, the height of storage should be restricted to preventburning pallets from falling on the building.

(3) Manual outside open sprinklers generally are not a reliable means of protection unless property isattended to at all times by plant emergency personnel.

(4) Open sprinklers controlled by a deluge valve are preferred.


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[Table A.20.14.1.1(a)]




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Public Input No. 224-NFPA 13-2016 [ New Section after A.14.2.1(3) ]

A.14.3.1 [A.22.1.4]

An example of an appropriate NFPA standard other than NFPA 13 that provides protection guidance withCMSA sprinklers is NFPA 30B Code of the Manufacture and Storage of Aerosol Products.


This new annex is offered to provide an example to the reader of another NFPA code or standard providing guidance using CMSA sprinklers. The paragraph number in brackets is the paragraph this annex would relate to following the reorganization of NFPA 13 for the next edition.




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A.16.1.2.2 [A.20.10.2]

Information for the protection of Classes I, II, III, and IV commodities was extrapolated from full-scale firetests that were performed at different times than the tests that were used to develop the protection forplastic commodities. It is possible that, by selecting certain points from the tables (and after applying theappropriate modifications), the protection specified by 16.2.1.4.1 exceeds the requirements ofSection 17.2 . for Class I, II, III, or IV commodities could exceed the requirements for plastics. In suchsituations, the protection specified for plastics, although less than that required by the tables, for Class I, II,III, and IV commodities can adequately protect Class I, II, III, and IV commodities.

This section also allows storage areas that are designed to protect plastics to store Class I, II, III, and IVcommodities without a re-evaluation of fire protection systems.






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A.16.1.2.3 [A.22.1.6]

Solid shelf racks as defined in 3.9.3.7.9 or obstructions resulting in solid shelf requirements could requireadditional in-rack sprinklers that could affect the ceiling design requirements.


This is being submitted in support of the document reorganization. No technical change is intended.




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A.16.1.4.1 [A.20.15.1]

Columns at the ends of racks or in the aisles need to be protected from the heat of a fire in the racks if theyare near the racks. Columns within the flue spaces are already within the footprint of the racks and needprotection. In [ Figure 20.15.1] Figure A.16.1.4.1, Column 1 is within the flue space and needs protection.Column 2 is within 12 in. (300 m) of the rack and needs protection. Column 3 is more than 12 in. (300 m)away from the rack and does not need protection even though it is in an aisle. A portion of Column 4 iswithin 12 in. (300 m) of the rack and therefore requires sprinkler protection.

Figure A.16.1.4.1 Protection 1 [Figure 20.15.1] Protection of Columns Within and Adjacent toRack Structure.






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Public Input No. 390-NFPA 13-2016 [ New Section after A.16.1.9 ]

A.16.1.10.3 [A.20.5.7.4.2.2]

During full-scale fire tests, flue space width and alignment are typically set with care for test consistency andrepeatability. Some full-scale fire tests and fire experience have shown sprinkler protection designed andinstalled in accordance with this standard are able to tolerate random variations in flue width and verticalflue alignment. For example, see Test 7 in the National Quick Response Sprinkler Research Project:Large-Scale Fire Evaluation of Early Suppression Quick-Response (ESFR) Automatic Sprinklers(report available from the NFPA Research Foundation web site). For Test 7 transverse flue variations weresubstantial such that some flues at various tiers were completely closed (pallet loads placed immediatelyadjacent to each other) and the vertical alignment of one transverse flue was completely disrupted. Theresult was the operation of eight K14 (K200) ESFR sprinklers as well as minor aisle jump to both targetracks. Reported damage was 2½ pallet loads in the main rack array and ¼ pallet load in the targe racks. Findings such as Test 7 support the toleration of flue variations in the real world. However, ideally palletloads should be positioned in rack with care to reduce the challenge faced by sprinklers should a fire occur.


Provide annex material to explain a basis for random variation in flue width and vertical alignment. Provided details of one fire test investigating these variables.




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Public Input No. 462-NFPA 13-2016 [ Section No. A.16.3.1.3.1.2 ]

A.16.3.1.3.1.2

In single-row racks with more than 10 ft (3.0 m) between the top of storage and the ceiling, a horizontalbarrier should be installed above storage with one line of sprinklers under the barrier.

Delete the entire section.

This section no longer correlates to section 12.1.3.4


does not correlate with section 12.1.3.4


Submitter Full Name: James Fantauzzi

Organization: North East Fire Protection Sys

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Public Input No. 465-NFPA 13-2016 [ Section No. A.16.3.1.3.1.3 ]

A.16.3.1.3.1.3

In multiple-row racks with more than 10 ft (3.0 m) between the maximum height of storage and ceiling, ahorizontal barrier should be installed above storage with a level of sprinklers, spaced as stipulated forin-rack sprinklers, installed directly beneath the barrier. In-rack sprinklers should be installed as indicated inFigure 16.3.1.3.1.3(A)(a) through Figure 16.3.1.3.1.3(A)(c) .

Data indicate that the sprinkler protection criteria in 16.3.1.3.1.3 are ineffective, by themselves, for rackstorage with solid shelves if the required flue spaces are not maintained. Use of Table 16.3.1.2, along withthe additional provisions that are required by this standard, can provide acceptable protection.

Delete the entire section

This section does not correlate to section 12.1.3.4


does not correlated to section 12.1.3.4


Submitter Full Name: James Fantauzzi

Organization: North East Fire Protection Sys

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A.17.1.2.7 [A.22.1.8]

Information for the protection of Class I, II, III, and IV commodities was extrapolated from full-scale fire teststhat were performed at different times than the tests that were used to develop the protection for plasticcommodities. It is possible that, by selecting certain points from the tables (and after applying theappropriate modifications), the protection specified by 16.2.1.4.1 exceeds the requirements ofSection 17.2. In such situations, the protection specified for plastics, although less than that required by thetables, can adequately protect Class I, II, III, and IV commodities.

This section also allows storage areas that are designed to protect plastics to store Class I, II, III, and IVcommodities without a re-evaluation of fire protection systems.


This is submitted in support of the document reorganization. No technical change is intended.




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A.19.1 [A.20.5.9]


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This section provides a summary of the data developed from the tissue test series of full-scale roll papertests conducted at the Factory Mutual Research Center in West Glocester, RI.

The test building is approximately 200 ft × 250 ft (61 m × 76 m)[50,000 ft2 (4650 m2)] in area, of

fire-resistive construction, and has a volume of approximately 2.25 million ft3 (63,720 m3), the equivalent of

a 100,000 ft2 (9290 m2) building 2.25 ft3 (6.6 m) high. The test building has two primary heights beneath asingle large ceiling. The east section is 30 ft (9.1 m) high and the west section is 60 ft (18.3 m) high.

The tissue test series was conducted in the 30 ft (9.1 m) section, with a clearance to the ceiling of nominally10 ft (3.0 m).

Figure A.19.1 [Figure A.20.5.9] illustrates a typical storage array used in the tissue series of tests.

The basic criteria used in judging test failure included one or more of the following:

(1) Firespread to the north end of the storage array

(2) Gas temperatures near the ceiling maintained at high levels for a time judged to be sufficient toendanger exposed structural steel

(3) Fire reaching the target stacks

Table A.19.1 [Table A.20.5.9] outlines the tissue test results.

Fire tests have been conducted on 20 ft (6 m) and 25 ft (7.6 m) high vertical storage of tissue with 10 ft(3.0 m) and 5 ft (1.5 m) clear space to the ceiling in piles extending up to seven columns in one directionand six columns in the other direction. In these tests, target columns of tissue were located directly acrossan 8 ft (2.4 m) aisle from the main pile. Three tests were conducted using K-8.0 286°F (141°C)

high-temperature sprinklers on a 100 ft2 (9290 m2) spacing and at constant pressures of 14 psi, 60 psi, and95 psi (1 bar, 4.1 bar, and 6.5 bar), respectively. One test was run using 0.64 in. (16 mm) 286°F (141°C)

high-temperature sprinklers on a 100 ft2 (9290 m2) spacing at a constant pressure of 50 psi (3.4 bar). Twotests were conducted following a scheduled decay from an initial pressure of 138 psi (9.5 bar) to a designpoint of 59 psi (4.1 bar) if 40 sprinklers opened. The significant characteristic of these fire tests was therapid initial firespread across the surface of the rolls. Ceiling temperatures were controlled during thedecaying pressure tests and during the higher constant pressure tests. With the exception of the 20 ft(6.1 m) high decaying pressure test, the extent of firespread within the pile could not be clearly established.Aisle jump was experienced, except at the 95 psi (6.5 bar) constant pressure, 20 ft (6.1 m) high decayingpressure, and large drop test. Water absorption and pile instability caused pile collapse in all tests. Thischaracteristic should be considered where manually attacking a fire in tissue storage occupancies.

Available fire experience in roll tissue storage occupancies does not correlate well with the constantpressure full-scale fire tests with respect to the number of sprinklers operating and the extent of firespread.Better correlation is noted with the decaying pressure tests. Thirteen fires reported in storage occupancieswith storage piles ranging from 10 ft to 20 ft (3.0 m to 6.1 m) high and protected by wet pipe sprinkler

systems ranging from ordinary hazard design densities to design densities of 0.6 gpm/ft2 (24.4 mm/min)were controlled with an average of 17 sprinklers. The maximum number of wet pipe sprinklers that openedwas 45, and the minimum number was 5, versus 88 and 26, respectively, in the constant pressure tests.Seventeen sprinklers opened in the 20 ft (6.1 m) high decaying pressure test. One actual fire in tissuestorage provided with a dry pipe system opened 143 sprinklers but was reported as controlled.

One fire test was conducted with plastic-wrapped rolls of heavyweight kraft paper. The on-end storage wasin a standard configuration, 20 ft (6.1 m) high with 9 1⁄2 ft (2.9 m) clearance to ceiling sprinklers. The

prescribed 0.3 gpm/ft2 (12.2 mm/min) density controlled the firespread, but protection to roof steel wasmarginal to the point where light beams and joists might be expected to distort. A lower moisture content inthe paper as a result of the protective plastic wrapping was considered to be the reason for the highertemperatures in this test as compared to a similar test where the rolls were not wrapped.

Figure A.19.1 Plan 1 [Figure A.20.5.9] Plan View of Typical Tissue Storage Array.


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Table A.19.1 Summary 1 [Table A.20.5.9] Summary of Roll Paper Tissue Tests

Test SpecificationsTest Number

B1a B2 B3 B4 B5b B6b

Test date 10/4/79 7/23/80 7/30/80 10/15/80 7/28/82 8/5/82

Paper type Tissue Tissue Tissue Tissue Tissue Tissue

Stack height [ft–in. (m)]21–10(6.5)

20–0(6.1)

21–8(6.60)

18–6(5.63)

19–10(6.05)

25–3 (7.7)

Paper, banded No No No No No No

Paper, wrapped No No No No No No

Fuel array Standard Standard Standard Standard Standard Standard

Clearance to ceiling [ft–in. (m)] 8–2 (2.5)10–0(3.0)

8–4 (2.5) 11–6 (3.5) 5–2 (1.6) 4–9 (1.4)

Clearance to sprinklers [ft–in. (m)] 7–7 (2.3) 9–5 (2.9) 7–9 (2.4) 10–9 (3.3) 4–7 (1.4) 4–2 (1.3)

Sprinkler orifice [in. (mm)] 17⁄32 (13.5) 17⁄32 (13.5) 17⁄32 (13.5)0.64(16.33)

17⁄32 (13.5) 17⁄32 (13.5)

Sprinkler temperature rating [F (°C)] 280 (138) 280 (138) 280 (138) 280 (138) 280 (138) 280 (138)

Sprinkler spacing [ft × ft (m × m)]10 × 10

(3.0 × 3.0)

10 × 10

(3.0 ×3.0)

10 × 10

(3.0 ×3.0)

10 × 10

(3.0 × 3.0)

10 × 10

(3.0 × 3.0)

10 × 10

(3.0 × 3.0)

Water pressure [psi (bar)] 14 (1.0)c 60 (4.1) 95 (6.6) 50 (3.4)

138 (9.5)initial

102 (7.0)final

138 (9.5)initial

88 (6.1)final

Moisture content of paper (%) 9.3 9.3 10.2 6.0 8.2 9.2

First sprinkler operation (min:sec) 0:43 0:32 0:38 0:31 0:28 0:22

Total sprinklers open 88 33 26 64 17 29

Final flow [gpm (L/min)]2575

(9750)c1992(7540)

1993(7544)

4907(18,573)

1363(5160)

2156(8160)

Sprinkler demand area [ft2 (m2)]8800(817.5)

3300(305)

2600(241)

6400(595)

1700 (158) 2900 (269)

Average discharge density [gpm/ft2

(mm/min)]

0.29

(11.8)c0.60(24.4)

0.77(31.4)

—

0.92 (37.5)initial

0.80 (32.6)

0.96 (39.1)initial

0.74 (30.2)


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Test SpecificationsTest Number

B1a B2 B3 B4 B5b B6b

final final

Maximum 1-minute average gastemperature over ignition [°F (°C)]

1680

(916)c1463(795)

1634(890)

1519(826)

d e

Duration of high temperature withinacceptable limits

No Yes Yes Marginal Yes Yes

Maximum 1-minute average fire plumegas velocity over ignition [ft/sec(m/sec)]

—40.7(12.4)

50.2(15.3)

47.8(14.6)

— —

Target ignited Yes Yes No No No Briefly

Extent of fire damage

within acceptable limitsNo No Marginal Marginal Yes Marginal

Test duration (min) 17.4 20 20 25.5 45 45

a Phase I test.

b Phase III tests decaying pressure.

c Pressure increased to 50 psi (3.4 bar) at 10 minutes.

d Maximum steel temperature over ignition 341°F (172°C).

e Maximum steel temperature over ignition 132°F (56°C).






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Public Input No. 307-NFPA 13-2016 [ New Section after A.20.3 ]

[NOTE TO EDITOR: The following new annex paragraphs are intended for the new Chapter 20 afterthe document reorganization]

[NEW A.20.4.3.1(3)

See 20.4.3.1(2) for commodities that include both Group A and Group B plastics.

[NEW A.20.4.3.1(4)]

See 20.4.3.1(2) for commodities that include both Group A and Group B plastics.






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A.20.5.2.4 NEW

Few commodities are anticipated to form unstable piles. An example of a commodity that hasdemonstrated in full-scale fire tests a behavior of progressively collapsing soon after a fire develops isuncartoned, empty, plastic, beverage bottles. Care should be exercised when applying the favorableprotection allowance for unstable piles. Few commodities are likely to display unstable pile behavior.


New annex material submitted to identify an example of a commodity that display an unstable pile behavior during a full-scale fire test. The annex supports a new paragraph provided as part of the document reorganization.




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A.20.5.3.4 NEW

Few commodities are anticipated to form unstable piles. An example of a commodity that hasdemonstrated in full-scale fire tests a behavior of progressively collapsing soon after a fire develops isuncartoned, empty, plastic, beverage bottles. Care should be exercised when applying the favorableprotection allowance for unstable piles. Few commodities are likely to display unstable pile behavior.


New annex material submitted to identify an example of a commodity that display an unstable pile behavior during a full-scale fire test. The annex supports a new paragraph provided as part of the document reorganization.




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Public Input No. 317-NFPA 13-2016 [ New Section after A.20.5.6.3.5 ]

[NOTE TO EDITOR: This PI is for a new paragraph in the new Chapter 20 once the document isreorganized.]

[NEW A.20.5.7.3.1]

Full-scale storage fire tests are typically performed with no obstructions in aisles. Obstructions such ascatwalks, whether solid or open grate, are not typically evaluated in the full-scale fire tests forming the basisof this standard.


This is annex material in provided in support of new paragraph 20.5.7.3.1.




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[NOTE TO EDITOR: This is a new annex paragraph in support of a new paragraph 20.5.7 which willbe in Chapter 20 once the document is reorganized.]

[NEW A.20.5.7]

Many factors affect the protection of rack storage, Section 20.5.7 defined the variables that limit or changethe available protection criteria found in Chapters 21 to 24. Sections 20.5.7.1 and 20.5.7.2 identify thegeneral terms of rack storage which identify which type of rack and shelving criteria is to be used inChapter 21 to 24.






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[NOTE TO EDITOR: This is a new annex paragraph related to Chapter 20 once the document isreorganized.]

[NEW A.20.5.13]

The combination of paper records, racking, shelving, and catwalks described for Cartoned Record Storageis based upon full-scale fire tests conducted in 2007 at Southwest Research Institute.


This is new annex material to identify the full-scale fire tests conducted on record storage.




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A.23.1.5

See Figure A.23.1.5(a) and Figure A.23.1.5(b) .

Figure A.23.1.5(a) Working Plans for Circulating Closed-Loop Systems (Example 1).

Figure A.23.1.5(b) Working Plans for Circulating Closed-Loop Systems (Example 2).


Remove text and figures for Circulating Closed Loops




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Submittal Date: Thu Feb 18 10:00:53 EST 2016


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A.23.4.4.8.1(5)

When using specific manufacturer's fitting equivalent lengths instead of those specified in Table 23.4.3.1.1,the manufacturer's table should be used in its entirety, including equivalent lengths specified for T-run fittingloss for straight-through flow in a tee fitting.


Clarifies that, when using specific manufacturer's data instead of the Table in NFPA 13, flow through the "run" of a tee fitting must be included when that is specified as a fitting equivalent in the manufacturer's published tables.



Public Input No. 104-NFPA 13-2016 [Section No.23.4.4.8.1]

Annex material to clarify change to codesection.


Submitter Full Name: Ivan Humberson

Organization: City Of Gaithersburg, Md.

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Public Input No. 159-NFPA 13-2016 [ New Section after A.24.2.2 ]

A.24.2.2.2.1.1 The purpose of the adjustment is to take into account reasonable daily and seasonalvariations in the water supply, which are easily predicted and tracked by a water utility. It is not theintent to use this section to account for unusual conditions such as 100 year droughts or watermain breaks. These unusual conditions are handled through the Impairment Procedures of NFPA25 and should not be considered when determining the ability of a water supply to meet thedemand of a fire protection system under more normal circumstances.

A.24.2.2.2.1.2 Consider the following example. A waterflow test is conducted at a location where acity water main is going to be tapped for a new sprinkler system. During the test, the staticpressure is measured at 70 psi, the residual pressure is measured at 50 psi while 1300 gpm wasdischarging from a nearby hydrant. The water utility is contacted and they indicate that areasonable low static pressure accounting for typical daily and seasonal fluctuations in this area is55 psi. The equation that describes the water supply available for a fire sprinkler system would be:

There are two ways to use this formula. One would be to assume two different values for Q,calculate P and then draw a graph on log 1.85 paper. Any fire sprinkler system demand falling onor below the line on this graph would be acceptable in accordance with NFPA 13 to work with thiswater supply. In this case, the two easiest flows to pick for Q would be 0 and 1300 gpm. When Q =0, P is simply 55 psi. When Q = 1300 gpm, P = 35 psi. These two points can be plotted on log 1.85paper as shown in Figure A.24.2.2.2.1.

The second way to use this formula would be to calculate the fire protection system and determinethe flow necessary to make the system work. Plug this flow into the formula above and see whatthe available pressure from the water supply will be at that flow. For example, if a sprinkler systemconnected to this water supply had a demand of 580 gpm, the available pressure from the watersupply would be:

P = (-20)(0.225) 55

P = 50.5 psi

So, as long as the sprinkler system has a pressure demand less than or equal to 50.5 psi, it willwork with this water supply.

FigureA-24-2-2-2-1.tiff




Safety_Factor_Proposal.docxThis shows the complete affect of the three proposals on this subject


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This is one of three proposals being made to move the adjustment of waterflow tests from the annex to the body of the standard. This particular proposal only adds clarification for the text that has been proposed to the body of Chapter 24.



Public Input No. 158-NFPA 13-2016 [Section No. A.24.2.2.2]





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Public Input No. 117-NFPA 13-2016 [ New Section after A.24.2.2.2 ]

A.24.2.2.2.1 Consider the following example. A waterflow test is conducted at a location where a city watermain is going to be tapped for a new sprinkler system. During the test, the static pressure is measured at 70psi, the residual pressure is measured at 50 psi while 1300 gpm was discharging from a nearby hydrant. The water utility is contacted and they indicate that a reasonable low static pressure accounting for typicaldaily and seasonal fluctuations in this area is 55 psi and that a reasonable low residual pressure accountingfor typical daily and seasonal fluctuations in this area at a flow of 1300 gpm is 35 psi. The equation thatdescribes the water supply available for a fire sprinkler system would be:

(SEE NFSA COMMENT TO NFPA 13 ON WATERFLOW TEST ADJUSTMENTS)

There are two ways to use this formula. One would be to assume two different values for Q, calculate P andthen draw a graph on log 1.85 paper. Any fire sprinkler system demand falling on or below the line on thisgraph would be acceptable in accordance with NFPA 13 to work with this water supply. In this case, the twoeasiest flows to pick for Q would be 0 and 1300 gpm. When Q = 0, P is simply 55 psi. When Q = 1300 gpm,P = 35 psi. These two points can be plotted on log 1.85 paper as shown in Figure A.24.2.2.2.1.

The second way to use this formula would be to calculate the fire protection system and determine the flownecessary to make the system work. Plug this flow into the formula above and see what the availablepressure from the water supply will be at that flow. For example, if a sprinkler system connected to this watersupply had a demand of 580 gpm, the available pressure from the water supply would be:

(SEE NFSA COMMENT TONFPA 13 ON WATERFLOWTEST ADJUSTMENTS)

So, as long as the sprinkler system has a pressure demand less than or equal to 50.5 psi, it will work withthis water supply.



A.24.2.2.1.3 The purpose of the adjustment required by this section is to take into account reasonablefluctuations that occur on a daily and seasonal basis, but not to burden the building owner with extremeconditions. During an extreme condition such as a water main break or a severe drought, the impairedsystem provisions of NFPA 25 can be employed to mitigate the circumstances of the extreme condition.

The intent of this section is to apply the adjustment to the raw data obtained by the flow test and not to applyadjustments to values that have already been adjusted by water utilities. If a water utility has alreadyprovided flow and pressure data for use in the design of fire protection systems that already includesadjustments for daily and seasonal water usage, there is no need to make any additional adjustments to thisdata.

A.24.2.2.1.4 See annex note A.24.2.2.1.3.

A.24.2.2.1.6 Water utilities are the entities that know their own supplies the best and know what appropriateadjustments need to be made to flow test data to provide reasonable fire protection. In the potential situationwhere the water utility will not make a definitive statement with regard to an adjustment, the fire protectionengineer is the person that would need to make a statement with respect to adjustments to the raw data froma flow test. Due to the judgment involved in making such a decision, the licensing laws in most states withinthe United States would require the fire protection engineer to make this determination rather than the fireprotection system contractor. It is expected that the engineer would make these statements in thespecifications provided to the fire protection system contractor. In the absence of any information from anyauthority on the subject, section 24.2.2.2.2 provides a standardized method of making a decision.

A.24.2.2.2.2 Section 24.2.2.2.2 provides a standardized method of making a decision regarding thereduction of the results from a waterflow test to determine what pressure and flow are available from a watersupply when the specifying engineer and the water utility have not provided adjustment information. Anexample of how to use this standardized method follows.

If a waterflow test is conducted at a location where a city water main is going to be tapped for a new sprinkler


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system and the static pressure is measured at 70 psi, with the residual pressure measured at 50 psi while1300 gpm was discharging from a nearby hydrant. If there is no information from the specifying engineer orwater utility regarding appropriate adjustments, the value of the static pressure and residual pressure needto be reduced by 5%.

The static pressure would be adjusted from 70 psi to 66.5 psi (70 x 0.95 = 66.5).

The residual pressure at 1300 gpm would be reduced from 50 psi to 47.5 psi (70 x 0.95 = 47.5).

The results would be plotted on log 1.85 graph paper as shown in the lower curve on Figure A.24.2.2.2.2 andthat curve would represent what the fire protection system contractor could use for a fire protection system.





PC_235.pdf 13-PC_235






Organization: NFPA


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Public Comment No. 235-NFPA 13-2014 [ New Section after A.24.2.2.2 ]

A.24.2.2.2.1 Consider the following example. A waterflow test is conducted at a location where a city watermain is going to be tapped for a new sprinkler system. During the test, the static pressure is measured at 70psi, the residual pressure is measured at 50 psi while 1300 gpm was discharging from a nearby hydrant. Thewater utility is contacted and they indicate that a reasonable low static pressure accounting for typical daily andseasonal fluctuations in this area is 55 psi and that a reasonable low residual pressure accounting for typicaldaily and seasonal fluctuations in this area at a flow of 1300 gpm is 35 psi. The equation that describes thewater supply available for a fire sprinkler system would be:

There are two ways to use this formula. One would be to assume two different values for Q, calculate P andthen draw a graph on log 1.85 paper. Any fire sprinkler system demand falling on or below the line on thisgraph would be acceptable in accordance with NFPA 13 to work with this water supply. In this case, the twoeasiest flows to pick for Q would be 0 and 1300 gpm. When Q = 0, P is simply 55 psi. When Q = 1300 gpm, P= 35 psi. These two points can be plotted on log 1.85 paper as shown in Figure A.24.2.2.2.1.

The second way to use this formula would be to calculate the fire protection system and determine the flownecessary to make the system work. Plug this flow into the formula above and see what the available pressurefrom the water supply will be at that flow. For example, if a sprinkler system connected to this water supply hada demand of 580 gpm, the available pressure from the water supply would be:

P = (-20)(0.225) 55

P = 50.5 psi

So, as long as the sprinkler system has a pressure demand less than or equal to 50.5 psi, it will work with thiswater supply.


A.24.2.2.1.3 The purpose of the adjustment required by this section is to take into account reasonablefluctuations that occur on a daily and seasonal basis, but not to burden the building owner with extremeconditions. During an extreme condition such as a water main break or a severe drought, the impaired systemprovisions of NFPA 25 can be employed to mitigate the circumstances of the extreme condition.

The intent of this section is to apply the adjustment to the raw data obtained by the flow test and not to applyadjustments to values that have already been adjusted by water utilities. If a water utility has already providedflow and pressure data for use in the design of fire protection systems that already includes adjustments fordaily and seasonal water usage, there is no need to make any additional adjustments to this data.

A.24.2.2.1.4 See annex note A.24.2.2.1.3.

A.24.2.2.1.6 Water utilities are the entities that know their own supplies the best and know what appropriateadjustments need to be made to flow test data to provide reasonable fire protection. In the potential situationwhere the water utility will not make a definitive statement with regard to an adjustment, the fire protectionengineer is the person that would need to make a statement with respect to adjustments to the raw data from aflow test. Due to the judgment involved in making such a decision, the licensing laws in most states within theUnited States would require the fire protection engineer to make this determination rather than the fireprotection system contractor. It is expected that the engineer would make these statements in thespecifications provided to the fire protection system contractor. In the absence of any information from anyauthority on the subject, section 24.2.2.2.2 provides a standardized method of making a decision.

A.24.2.2.2.2 Section 24.2.2.2.2 provides a standardized method of making a decision regarding the reduction ofthe results from a waterflow test to determine what pressure and flow are available from a water supply whenthe specifying engineer and the water utility have not provided adjustment information. An example of how touse this standardized method follows.

If a waterflow test is conducted at a location where a city water main is going to be tapped for a new sprinklersystem and the static pressure is measured at 70 psi, with the residual pressure measured at 50 psi while 1300


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gpm was discharging from a nearby hydrant. If there is no information from the specifying engineer or waterutility regarding appropriate adjustments, the value of the static pressure and residual pressure need to bereduced by 5%.

The static pressure would be adjusted from 70 psi to 66.5 psi (70 x 0.95 = 66.5).

The residual pressure at 1300 gpm would be reduced from 50 psi to 47.5 psi (70 x 0.95 = 47.5).

The results would be plotted on log 1.85 graph paper as shown in the lower curve on Figure A.24.2.2.2.2 andthat curve would represent what the fire protection system contractor could use for a fire protection system.




Water_Supply_Adjustment_Proposal-E_S-13.pdf The whole comment with figures and equations ✓



Related Item






Street Address:

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Committee Statement

CommitteeAction:

Rejected but held



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Page 1085 of 1114





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( ) 2

85.1

121 P

QQPPP +

−=



Page 1087 of 1114


( ) 551300

553585.1

+

−=

QP


( ) 551300

5805535

85.1

+

−=P

P = (-20)(0.225) + 55

P = 50.5 psi


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Page 1089 of 1114



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A.24.2.2.2

An adjustment to the waterflow test data to account for daily and seasonal fluctuations, possibleinterruption by flood or ice conditions, large simultaneous industrial use, future demand on the water supplysystem, or any other condition that could affect the water supply should be made as appropriate.



PC_234.pdf 13-PC_234






Organization: NFPA


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Public Comment No. 234-NFPA 13-2014 [ Section No. A.24.2.2.2 ]

A.24.2.2.2

An adjustment to the waterflow test data to account for daily and seasonal fluctuations, possible interruption byflood or ice conditions, large simultaneous industrial use, future demand on the water supply system, or anyother condition that could affect the water supply should be made as appropriate.



Water_Supply_Adjustment_Proposal-E_S-13.pdf This is the whole proposal with figures and equations ✓



Related Item






Street Address:

City:

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Zip:


Committee Statement

CommitteeAction:

Rejected but held



1 of 2 5/13/2016 2:46 PM

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Page 1093 of 1114




( ) 2

85.1

121 P

QQPPP +

−=



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( ) 551300

553585.1

+

−=

QP


( ) 551300

5805535

85.1

+

−=P

P = (-20)(0.225) + 55

P = 50.5 psi


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Page 1096 of 1114



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A.24.2.2.2

An adjustment to the waterflow test data to account for daily and seasonal fluctuations, possibleinterruption by flood or ice conditions, large simultaneous industrial use, future demand on the water supplysystem, or any other condition that could affect the water supply should be made as appropriate.


The concept of an adjustment to take into account daily and seasonal fluctuations needs to be required in the body of the standard, not optional in the annex. It is inconceivable that an industry standard does not mandate the use of worse-case situations when determining the water supply for a life safety system.



Public Input No. 159-NFPA 13-2016 [New Section after A.24.2.2]





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