2016 ca building standards code structural - final...1 2016 update to the california building...

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2016 Update to the California Building Standards Code Webinar Series

Webinar 3 — Structural Provisions

May 22, 2017

Welcome

Amber McEwenCalifornia Hospital Association

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Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

This course is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner ofhandling, using, distributing or dealing in any material or product._______________________________________

Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

Overview and Introductions

Cheri HummelVice President, Emergency Management & FacilitiesCalifornia Hospital Association

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Roy Lobo, PhD, is a registered licensed structural engineer with OSHPD and has more than 23 years of experience in the field. Dr. Lobo’s expertise is in non-linear analysis and he is the prime author of the IDARC-3D computer program. In addition to his analytical background in computer modeling and software development, Dr. Lobo has vast design experience in the evaluation and retrofitting of existing buildings.

Faculty

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Joseph L. La Brie, SE, is a registered civil and structural engineer, and founder of MakeItRight, Inc., a progressive multidiscipline hospital design firm. Mr. La Brie founded thestate-of-the-art Dynamic Certification Laboratory, which has been used extensively for the certification of a broad range of equipment for critical occupancy buildings.

From 2005 to 2013, he served as a member of the Hospital Building Safety Board and was chair for four of those years. He currently serves as a consulting member to the board’s Education and Technology committees.

Faculty

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Hospital Building Safety Board May 22, 2017

Structural Provisions

Joseph L. La Brie, SEHBSB Consulting Member

Roy Lobo, PhDPrincipal Structural Engineer, OSHPD

Outline

INTRODUCTION

DESIGN

SPECIAL INSPECTIONS, TESTS AND OBSERVATIONS

STRUCTURAL ELEMENTS

EXISTING BUILDINGS

QUESTIONS

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§ 129680. Legislative intent(a) it is the intent of the Legislature that hospital

buildings that house patients who have less than the capacity of normally healthy persons to protect themselves, and must be reasonably capable of providing services to the public after a disaster, shall be designed and constructed to resist, insofar as practical, the forces generated by earthquakes, gravity and winds. In order to accomplish this purpose, the office shall propose proper building standards for earthquake resistance based upon current knowledge, and provide independent review of the design and construction of hospital buildings.

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State Law Regarding Hospital Building Safety

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Proposed Building Standards for Code AdoptionBUILDING STANDARDS RULEMAKING PROCESS

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1. Do not conflict, overlap or duplicate other building standards

2. Remain within the parameters established by enabling legislation

3. Adoption required by public interest

4. Not unreasonable, arbitrary, unfair or capricious

5. Cost to the public is reasonable, based on overall benefit

6. Not unnecessarily ambiguous or vague

7. National standards and model codes are incorporated

8. Consistent format with that adopted by the Commission

9. If promoting fire and panic safety, approved by the State Fire Marshal

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Nine-Point Criteria —Health and Safety Code (H&SC) §18930

Adopt national codes/standards unless amendments are required for (consistent with H&SC Sections 129680 & 17958.7.a):

1. Statutory requirements

2. Geological conditions

3. Climatological conditions

4. Topographical conditions

OSHPD Policy on Code Adoption

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Amendments for the CBC 2016

Amendments for the CAC 2016 13

Adoption of International Building Code 2015 (IBC 2015) and Referenced Standards

Retain Chapter 34A for OSHPD 1 buildings

Adopt Chapter 4 of the International Existing Building Code (IEBC) for OSHPD 2 buildings

New Structural Performance Category SPC-4D for existing nonconforming buildings

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Big-Picture Amendments in 2016 — StructuralOSHPD’S STRUCTURAL AMENDMENTS FOR THE CBSC 2016

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2016 California Building Code (CBC 2016)

Structural Design

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Demand/Forces for design in the CBC 2013 & CBC 2016 are mostly the same

American Society of Civil Engineers (ASCE) 7-10 is the basis for ground motions in both the CBC 2013 & CBC 2016

No changes in seismic hazard maps

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Demand Forces

Design criteria requirement for wind tunnel test is deletedsince the CBC 2016 adopted ASCE 49-12 for wind tunnel tests (Section 1616A.1.1).

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Design Criteria

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For Rp greater than 1.5, overstrength factor (Ω0) shall be 2.0 (Instead of 2.5)

Vibration isolators along with associated snubbers/connections shall be designed for overstrength factor of 2.0

Overstrength factor (Ω0) for exterior nonstructural wall elements and connections shall be 1.0

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Overstrength Factor for Nonstructural Components CONCRETE ANCHORAGE 1616A.1.23

National Fire Protection Association (NFPA) 13-16 demand and capacities will be accepted without recalculations because they are consistent with ASCE 7-10/ACI 318-14.

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NFPA 13-16 for Sprinkler Pipe Supports, Attachments & Seismic Bracings

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Transverse diagonal ceiling brace can be omitted for exit ways up to 8’ wide when: Perimeter support satisfy ASTM 580;

and Perimeter wall designed to carry lateral

loads

Brace spacing shall be justified by analysis or test, and shall not exceed 12’x12’

Ceiling support and bracing wires shall be spaced a minimum of 6” from pipes, ducts, conduits and equipment that are not braced for horizontal forces

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Suspended Ceilings — 1616A.1.21

Linear procedure can be used for base-isolated buildings in Seismic Design Category (SDC) D (Section 1616A.1.36) as permitted by ASCE 7-10, §17.4.1.

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Base-isolated buildings in non-red areas (SDC D) can use linear procedure

Base-Isolated Buildings in SDC D Can Be Designed by Linear Procedure

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Buildings with welded steel moment frames constructed under a permit issued prior to Oct. 25, 1994, post-earthquake verification shall be performed in accordance with Section 1616A.1.39.

Joint evaluation report to be submitted within specified time frames; no building permits until joint evaluation work is completed.

Exception: Seismic compliance, maintenance and repair

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Post-Earthquake Structural Verification 1616A.1.39

Special Inspections and Tests

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1703A.1 Approved agency

1703A.1.1 Independence

1703A.1.2 Equipment

1703A.1.3 Personnel

1703A.2 Written approval

1703A.3 Record of approval

1703A.4 Performance

1703A.4.1 Research and investigation

1703A.4.2 Research reports

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Special Inspections & Tests1703A APPROVALS

1703A.5 Labeling

1703A.5.1 Testing

1703A.5.2 Inspection and identification

1703A.5.3 Label information

1703A.5.4 Method of labeling

1703A.6 Evaluation and follow-up inspection services

1703A.6.1 Follow-up inspection

1703A.6.2 Test and inspection records

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Special Inspections & Tests1703A APPROVALS (CONT.)

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1704A.1 General

1704A.2 Special inspections and tests

1704A.2.1 Special inspector qualifications

1704A.2.2 Access for special inspection

1704A.2.3 Statement or special inspections

1704A.2.4 Report requirement

1704A.2.5 Special inspection of fabricated items

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Special Inspections & Tests1704A

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Special Inspections & Tests1704A (CONT.)

1704A.3 Statement of special inspections

1704A.3.1 Content of statement of special inspections

1704A.3.2 Seismic requirements in the statement of special inspections

1704A.3.3 Wind requirements in the statement of special inspections

1704A.4 Contractor responsibility

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1704A.5 Submittals to the building official

1704A.6 Structural observations

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Special Inspections & Tests1704A (CONT.)

1705A.1 Special cases (unusual)

1705.A.1.1 Construction materials

1705.A.1.2 Design application of materials

1705.A.1.3 Manufacturer requirements

1705A.2 Steel construction

1705A.2.1 Structural steel

1705A.2.2 Cold-formed steel deck

1705A.2.3 Open-web steel joists and joist girders

1705A.2.4 Cold-formed steel trusses >60 feet span

1705A.2.4.1 Light-framed steel truss inspection

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Special Inspections & Tests1705A REQUIRED SPECIAL INSPECTIONS AND TESTS

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1705A.2 Steel construction (cont.)

1705A.2.5 Inspection of structural welding

1705A.3 Concrete construction

1705A.3.1 Welding of reinforcing

1705A.3.2 Material tests

1705A.3.3 Batch plant inspection

1705A.3.4 Inspection of prestressed concrete

1705A.3.5 Concrete preplacement inspection

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Special Inspections & Tests1705A REQUIRED SPECIAL INSPECTIONS AND TESTS (CONT.)

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Special Inspections & Tests

1705A.4 Masonry construction

1705A.5 Wood construction

1705A.6 Soils

1705A.7 Driven deep foundations

1705A.8 Cast-in-place deep foundations

1705A.9 Helical pile foundations

1705A.10 Fabricated items

1705A.11 Special inspection for wind

1705A REQUIRED SPECIAL INSPECTIONS AND TESTS (CONT.)

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1705A.12 Special inspection for seismic


1705A.12.2 Structural wood

1705A.12.3 Cold-formed steel light-frame construction

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1705A.12 Special inspection for seismic (cont.)

1705A.12.4 Special inspection for special seismic certification

1705A.12.5 Architectural components

1705A.12.6 Plumbing, mechanical and electrical components

1705A.12.7 Storage racks

1705A.12.8 Seismic isolation and damping systems

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1705A.13 Testing for seismic resistance


1705A.13.2 Nonstructural components

1705A.13.3 Special seismic certification

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1705A.14 Sprayed fire-resistant materials

1705A.15 Mastic and intumescent fire-resistant coatings

1705A.16 Exterior insulation and finish systems (EIFS)

1705A.17 Fire-resistant penetrations and joints

1705A.18 Testing for smoke control

1705A.19 Shotcrete

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1708A.1 General

1708A.3 In-situ load test

1708A.3.1 Load test procedure specified

1708A.3.2 Load test procedure not specified

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Special Inspections & Tests1708A IN-SITU LOAD TESTS

1709A.1 General

1709A.5 Exterior window and door assemblies

1709A.6 Skylights and sloped glazing

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Special Inspections & Tests1709A PRECONSTRUCTION LOAD TESTS

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Soils and Foundations

Provisions for earth retaining shoring and vibro stone columns for ground improvement movedfrom Appendix J to Chapter 18A.

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Shoring and Stone Column Requirements Moved to Chapter 18A

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Appendix J was creating perception that entire site grading is in OSHPD jurisdiction

ONLY grading supporting OSHPD-regulated facilities are in OSHPD jurisdiction and NOT site grading

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Appendix J is Not Adopted Anymore

Requirements of underpinning for protection of adjacent structures explicitly added (Sections 1804A.2 & 1808A.3.2)

Requires compliance with Chapter 33, Safeguard During Construction

No more underpinning design criteria/Alternate Method of Compliance (AMC)!

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Underpinning

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Provisions for steel sheet piles shoring are added (Sections 1810A.3.2.3, 1810A.3.5.3.2 & 1810A.3.5.3.3)

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Steel Sheet Piles

Inspection, monitoring and observation requirements will be equivalent to those required for installation of shoring with soldier piles & lagging (Sections 1812A.6 and 1812A.7).

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Testing provisions and acceptance criteria for

proprietary non-hammer driven piles are added to

Section 1810A.3.3.1.2.

Non-Hammer Driven Piles Testing

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Concrete

Code is fully reorganized from an engineer’s perspective (NOT for contractor!)

Each building member (beam, column, slab, etc.) has its own chapter with complete design and detailing rules

Each member chapter includes provisions for cast-in-place and precast concrete, mildly reinforced and prestressed

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American Concrete Institute (ACI) 318-14: Completely Reorganized

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There are two new chapters:

Chapter 4: Structural System Requirements

Chapter 12: Diaphragms

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ACI 318-14: Completely Reorganized (cont.)

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ACI 318-14: Completely Reorganized (cont.)

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Existing OSHPD amendments covered by ACI 318-14 are deleted.

Examples:

Specifications for tests and materials 26.4.2.1a (concrete mix design requirements)

Mechanical and welding splices of reinforcing bars (25.5.7)

Horizontal shear transfer requirements in composite concrete members (16.4.1)

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Chapter 19A Amendments

Existing amendments that address subjects not covered by ACI 318-14 are retained.

Examples:

Post-installed anchor bolt testing

Field rebar testing

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Chapter 19A Amendments (cont.)

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CBC 1903A.8 (ACI 318 Sec. 26.6.4.1(b)) — Welding of Reinforcing Bars

Repealed amendment that required chemical analysis of reinforcing steel to be welded, since they duplicate requirements in American Welding Society (AWS) D1.4.

Revised amendment to permit shop fusion welding of reinforcing cages of low-alloy steel reinforcing stirrups/ties conforming to ASTM A706 and longitudinal holding wires conforming to ASTM A1064.

Tack welding of primary bars together or to stirrups/ties is not permitted.

Fusion welding of holding wires is not permitted where reinforcing bar is or will be bent (ACI 318 Section 25.3).

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Welding of Reinforcing Bars

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Column Ф-Factor Table Revised

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Column Ф-Factor Table Revised (cont.)

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TMS 402-13 — Reorganized changes are mostly in format rather than technical:

Chapter 1 is split into seven chapters

Chapter 5 (Empirical Design ofMasonry) moved to Appendix A

Amendments in Chapter 21A: Masonry

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Exceptions added:

1. Core sampling and testing is not required for nonbearing non-shear masonry walls, not exceeding total wall height of 12 feet above wall base, built with single-wythe hollow unit concrete masonry that attaches opposite face shells using webs cast as single unit, when designed using an f' m not exceeding 2,000 psi (13.79 MPa).

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Core Testing of MasonryCORE TESTING REQUIREMENTS SIMILAR TO 2013

Exceptions added:

2. An infrared thermographic survey or other nondestructive test procedures, shall be permitted to be approved as an alternative system to detect voids or delamination in grouted masonry in lieu of core sampling and testing.

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Core Testing of MasonryCORE TESTING REQUIREMENTS SIMILAR TO 2013 (CONT.)

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Steel

Few changes in steel design:

American Institute of Steel Construction (AISC) 360-10, AISC 341-10 & AISC 358-10 are the basis for capacity in both the CBC 2013 & CBC 2016

Side plate moment connections will be permitted in accordance with AISC 358-10, Supplement No. 2, with OSHPD amendments

Slenderness ratio limits added

Multi-tiered braced frame amendments added

ASTM 1085 HSS steel permitted

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2016 CBC: Steel DesignAN OVERVIEW

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Supplement No. 2 for AISC 358-10 adopted with new amendments for the side plate moment connection in Chapter 11.

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Amendments in Chapter 22ASIDE PLATE MOMENT CONNECTION

Tension slenderness ratio (L/r) shall not exceed 300 (except for rod hangers & NFPA 13)

Compression slenderness ratio (KL/r) shall not exceed 200 (except for NFPA 13)

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Amendments in Chapter 22ASTEEL SLENDERNESS RATIO LIMITS

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NDS-15 & SDPWS-15 are updated

Technical changes are minor

Only one new OSHPD amendment:

Cross Laminated Timber (CLT) for seismic design will be considered to be alternative system.

Amendments in Chapter 23: Wood

Existing Structures

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IBC 2015 removed Chapter 34, Existing Structures, from scope.

OSHPD kept CBC Chapter 34A for OSHPD 1 buildings.

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2016 CBC: Existing StructuresAN OVERVIEW

IEBC 2015, Chapter 4, is adopted for OSHPD 2 & 4 buildings

Requirements are similar to those in IBC 2012, Chapter 34

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2016 CBC: Existing StructuresAN OVERVIEW (CONT.)

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Incidental alterations (additions & repairs) are alterations that would not:

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Incidental Alterations DEFINITION

Reduce the story lateral shear force-resisting capacity by more than 5 percent; or

Increase the story shear by more than 5 percent in any existing story; or

A combination thereof with equivalent effect (not exceeding 5 percent total)

Minor structural alterations (additions & repairs) are alterations that would not:

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Reduce the story lateral shear force-resisting capacity by more than 10 percent; or

Increase the story shear by more than 10 percent in any existing story (base shear by 10%); or

A combination thereof with equivalent effect (not exceeding 10 percent total)

Minor Alterations DEFINITION

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1. New building provisions in Sections 3403A (additions), 3404A (alterations) and 3405A (repairs); or

These are based on IEBC 2015, Chapter 4 (similar to IBC 2012, Chapter 34)

2. Nonconforming building provisions in Section 3411; or

3. Performance-based (ASCE 41-13) provisions in Section 3412A.

CANNOT mix and match items #1 through #3

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Addition, Alteration & Repair Options

1. Major structural alterations shall satisfy the new building code provisions.

Analysis shall use demand based on Chapter 16A;

Capacity shall be based on material chapters of the CBC 2016; and

Drift shall be based on Chapter 16A

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New Building Code ProvisionsMAJOR STRUCTURAL ALTERATIONS

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Analysis shall use demand based on Chapter 16A

Triggers for structural element upgrade, which is based on demand/capacity (D/C) ratio, is unchanged:

• 5% increase in D/C ratio for gravity loads

• 10% increase in D/C ratio for lateral forces

Drift can be based on original design code

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New Building Code ProvisionsINCIDENTAL OR MINOR STRUCTURAL ALTERATIONS

2. Incidental or minor provisions for nonconforming buildings:

Section 3411A (permits use of new building code provisions with Ie = Ip = 1.0, instead of 1.5)

Exception: Nonstructural components for life-safety after an earthquake shall have Ip = 1.5

H&SC Section 129875 mandates flexibility and simplified approval procedures

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Nonconforming Building Provisions

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3. ASCE 41-13-based provisions: Section 3412A through Section 3419A.

Include provisions mandated by HSSA 83 and SB 1953

Performance-based provisions based on IEBC, Chapter 4

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Performance-Based Provisions (ASCE 41-13)

New structural elements are designed, detailed and connected to the existing structural elements as required by Chapter 16A. Alterations of existing structural elements shall be based on design demand required by Chapter 16A. Demands for new or altered existing structural elements need not exceed the maximum load effect that can be transferred to the elements by the system.

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Voluntary Seismic Improvements

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For additions, alterations and repairs

For buildings and structures in flood hazard areas established in Section 1612A.3, any additions, alterations or repairs that do not constitute substantial improvement of the existing structure, as defined in Section 202, are not required to comply with the flood design requirements for new construction.

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Acampo Flooding Feb. 11, 2017SOURCE: Jami Spagnola

Flood Hazard Areas

1.0 Scope

1.1 Application

1.2 DefinitionsCONFORMING BUILDING

DAMAGE CONTROL STRUCTURAL PERFORMANCE CATEGORY

STRUCTURAL PERFORMANCE CATEGORY SPC-4D

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Structural Performance Category SPC-4DARTICLE 1 DEFINITIONS AND REQUIREMENTS

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1.4 Compliance plans

1.4.5.1 Change in seismic performance category

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Structural Performance Category SPC-4DARTICLE 1 DEFINITIONS AND REQUIREMENTS (CONT.)

1.4 Compliance plans

1.4.5.1.3 Reclassify to SPC-4D

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Structural Performance Category SPC-4DARTICLE 1 DEFINITIONS AND REQUIREMENTS (CONT.)

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3401A.1 Additions, alterations and repairs

3401A.4 Building materials, equipment and systems

3401A.4.1 Existing materials and equipment

3401A.4.2 New and replacement materials and equipment

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Structural Performance Category SPC-4DSECTION 3401A

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1. Where the lateral seismic forces are resisted by under-reinforced masonry walls (reinforcing not meeting TMS 402 Section 7.3.2.6), the determination of whether the retrofit meets objective of SPC-4D shall be made on a case-by-case basis via an Alternate Method of Compliance.

2. Walls that are retrofitted to be equivalent to walls having minimum reinforcement per TMS 402 shall resist a substantial majority of the lateral seismic forces.

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3412A.1 Adoption of ASCE 41

3412A.2 Seismic evaluation and retrofit of general acute care hospitals for compliance with the California Administrative Code, Chapter 6

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Structural Performance Category SPC-4DSECTION 3412A (CONT.)

3412A.2.3 SPC-4D (cont.)

3412A.2.3.1 Prescriptive compliance provisions for SPC-4D using the California Building Code, 1980 (CBC 1980)

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3412A.2.3 SPC-4D (cont.)

3412A.2.3.1 Prescriptive compliance with CBC 1980


3412A.2.3 SPC-4D (cont.)

3412A.2.3.1 Prescriptive compliance with CBC 1980

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3412A.2.3 SPC-4D (cont.)

3412A.2.3.2 SPC-4D using ASCE 41.

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3412A.2.3 SPC-4D (cont.)

3412A.2.3.3 Prescriptive compliance provisions for SPC-4D using the new building design requirements of this code

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Thank You

Roy Lobo, PhDStructural Engineer, [email protected]

Joseph L. La Brie, SECivil and Structural Engineer, MakeItRight, Inc. Former HBSB [email protected]

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Questions

Online questions:Type your question in the Q & A box, hit enter

Phone questions:To ask a question, hit *1

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Thank You and Evaluation

Thank you for participating in today’s seminar. An online evaluation will be sent to you shortly. Full attendance and completion of the online evaluation and attestation are required to receive CEs. CEs are complimentary and available for the registrant only.

For education questions, contact Amber McEwen at (916) 552-7578 or [email protected].

2016 ca building standards code structural - final...1 2016 update to the california building...

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