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TRANSCRIPT
Appeals Page I of4portl*ndonll*& " $l€fi s*.rt
Project Address: 4116 N Williams Ave
Appellant Name: Monica Jones
Appellant Phone: 503-265-1 559
Plans Examiner/lnspector: Jerry Englehardt
Stories: 4+ Occupancy: R-2, S-2, M Construction Type:
Type lll-A, V-A
Fire Sprinklers: Yes - Building, decks, under canopies,
parking area
LUR or Permit Application No.:
Proposed use: Multi-family
Section 602.3iTables 601 and 602 and Section 705.5
Per Table 601: Fire-Resistance rating required for Exterior Bearing Wall for Type lll is 2 HR.
Per Table 602 and Section 705.5: The required fire -resistance
rating for exterior walls with a fire
separation distance of greater than 10' shall be rated for exposure to fire from the inside.
For exterior bearing walls with a fire separation distance > 10' we propose to use wall assembly
U.L. Design No. U349 (attached) which includes 1 layer of LP Flame Block Fire-Rated sheathing
with reinforced Pyrotite coating on each side of the panel for the exterior sheathing/shear panel
and required fire rating.
Proposed Design
See attached documentation:
UL Design data
LP Flame Block data
2 HR Exterior wall type
Reason for alternative The proposed does not appeal any code section, but requests an approval for an equivalent, but
alternative, 2HR exterior wall assembly for TYPE lll construction. The proposal does not
jeopardize life safety, minimize fire protection or minimize the structural integrity of the exterior wall
system. The
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POL -r Government -r Bureaus & Offices -+ Development Services -r Applications/Handouts -rPermits & Inspections *+ Appeals
Building, Electrical
I\PPEAL SUMMARYStatus: Decision Rendered
Appeal lD:9547
Hearing Date:2113113
Case No.: 8-006
AppealType: Building
Project Type: commercial
Building/Business Name:
Appeal Involves: Erection of a new structure
Plan Submitted Option: mail lFile 1l tFile 2l
APPEAL INFORMATION SHEET
Appeal item 1
Code Section
Requires
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Appeals Page 2 of 4
Appeal itemCode Section
Requires
Proposed Design
Reason for alternative
Appeal item 3Gode Section
Requires
Proposed Design
elimination of the additional layer of gypsum sheathing (Dens glass) on the exterior face of the
building minimizes the overall thickness of the wall assembly (which will also include a rainscreen)
and saves on construction costs
1022.125
Interior exit stainrvays shall be enclosed with fire barriers in accordance with Section 712.
Exception 1. - "not required to be enclosed when stairway serves and occupant load of less than
1 0 and complies with either ltem 1 ,1 or 1 .2 as listed below:
1.1 The stainvay is open to not more than one story above its level of exit discharge.
The building has four interior stairways - four exit enclosures. The stair enclosures serve 4-5
stories, depending on their location within the building. Two of the interior stairs (50%) exit
thorough a lobby on the level of discharge which is permitted per Section 1027.1 .
We propose to have one of the stairs open from the lobby (level of discharge) to the second floor.
The enclosure walls will have a fire rating of 2HR as will be the underside of the stairs above. At
the second floor, there will be a landing with a 90 minute rated door leading to the stair enclosure
serving the two floors above.
The lobby at the level of discharge will be protected with NFPA 13 sprinklers as will the underside
of the second story deck which will partially cover the exit passageway out to the public way.
See attached documentation:
Lobby Stair section and floor plans
Floor plan - Ground floor and second floor
The design intent is to provide an open and welcoming lobby to the facility. The open stair
provides a home- like and welcoming feel to the lobby. This stair will provide an access to the
community room, fitness room and community deck on the second floor. Tenants will also load
furniture and other heavy objects from the parking area just outside onto the adjacent elevator at
the bottom of these stairs. An enclosed stair with its required exit door would encroach into area
and impede functionality.
This one open stair will not minimize the life safety or fire protection requirements of the building. lt
does not minimize the number of required enclosed exits from the second floor since it would only
serve 25% ofthe occupants from the second floor.
707 .13.3 and 707.13.1
Openings into trash chutes shall be located in compartments enclosed by 1 HR. fire barrier with a
45 min. self-closing door. Openings into chutes shall not be located in corridors.
We will construct a 1 HR compartment to enclose the trash chute door. The compartment door will
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Appeals Page 3 of 4
have a delayed closer for people with disabilities. The closing device will have a 15 sec. min./30
sec. max delay.
See attached documentation:
Trash chute detail
Reason for alternative There are two trash rooms in the building at opposite ends. The trash chutes are off the corridors
to align with the trash rooms on the ground floor and to maximum square footage for the units. The
trash chutes are located within an enclosure within an enclosure per the attach6 detail. The door to
the compartment containing the door to the chute is located in the corridor but the opening to the
actual chute per the requirement of Section 707
Appeal item 4Code Section
Requires
1009.13.2
Protection at roof hatch openings where the opening provided is located within 10' of the roof
edge, such opening will be protected by guardrails in accordance with the provisions of Section
101 3.
The two roof hatches allow access to unoccupied roof areas and will be located within stair
enclosures. The roof hatches are located 8'-6" from the nearest roof edge. The roof hatch door will
swing up and toward the nearest roof edge blocking access along this edge. The adjacent wall
provides protection along the western edge of the opening and will block any access to the nearest
roof edge.
We propose a small 42" high guardrail at the opening of the hatch which will provide the added
protection within 10' from the roof edge.
Proposed Design
See attached documentation:
Plan of roof hatch
Reason for alternative A guardrail along the nearest roof edge will be visible from N. Wlliams and will have a negative
impact on the overall design of the exterior elevations. lt may also require an additional LU review
which would not be beneficial to the project.
A guardrail along the nearest roof edge (parapet) is unnecessary. Our proposal will provide the
required roof access protection within 10' from the nearest roof edge.
APPEAL DECISION
1. Alternative to Fire-treated wood sheathing in exterior wall: Granted as proposed.
2. Discontinuity of stair enclosure: Denied. Proposal does not provide equivalent lifesafety. Appellant may contact Jerry Engelhardt (503-823-7534) for more information.
3. Separation of Trash Chute from corridor: Granted provided a sprinkler head is placedin the compartment between the corridor door and the chute. Sprinkler to be installedunder separate permit from Fire Marshal's Office.
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Appeals
4. Guardrail adjacent to roof hatch: Granted as proposed.
The Administrative Appeal Board finds that the information submitted by the appellantdemonstrates that the approved modifications or alternate methods are consistent with the intentof the code; do not lessen health, safety, accessibility, life, fire safety or structural requirements;and that special conditions unique to this project make strict application of those code sectionsimpractical,
Copyright O 2013 City of Portland - Privacy Policy
Page 4 of 4
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Design No. U349BXUV.U349
Fire Resistance Ratings - ANSI/UL 263
Page Bottom
Design/System/Construction/Assembly Usage DisclaimerAuthorities Having Jurisdiction should be consulted in all cases as to the particular requirements covering the installationand use of UL Listed or Classified products, equipment, system, devices, and materials.Authorities Having Jurisdiction should be consulted before construction.Fire resistance assemblies and products are developed by the design submitter and have been investigated by UL forcompliance with applicable requirements. The published information cannot always address every construction nuanceencountered in the field.When field issues arise, it is recommended the first contact for assistance be the technical service staff provided by theproduct manufacturer noted for the design. Users of fire resistance assemblies are advised to consult the general GuideInformation for each product category and each group of assemblies. The Guide Information includes specifics concerntngalternate materials and alternate methods of construction.Only products which bear UL's Mark are considered as Classified, Listed, or Recognized.
Fire Resistance Ratings - ANSI/UL 263
See General Information for Fire Resistance Ratings - ANSI/UL 263
Design No. U349September 18,2OI2
Bearing Wall Rating - 2 Hr
(EXPOSED TO FIRE ON INTERIOR FACE ONLY)
For Wood Studs, Finish Rating - 55 min
Load Restricted for Canadian Applications - See Guide BXUVT
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1. Wood Studs - Nom 2 by 4in., spaced 16 in. OC in with two 2 by 4 top and one 2 by 4 bottom plates. Asan option, nom 2 by 6 in., spaced 24in. OC with two 2bV 6 top and one 2 by 5 bottom plates may be used inlieu of 2 by 4 studs and plates. Studs effectively fire stopped.
1A. Steel Studs - (Not Shown) In lieu of Item 1. Corrosion protected steel studs, min No. 20 MSG and min.3-L/2 in. deep, cold formed, shall be designed in accordance with the current edition of the Specification forthe Design of Cold-Formed Steel Structural Members by the American Iron and Steel Institute. All designdetails enhancing the structural integrity of the wall assembly, including the axial design load of the studs,shall be as specified by the steel stud designer and/or producer, and shall meet the requirements of allapplicable local code agencies. The max stud spacing of wall assemblies shall not exceed 16 in. OC. Studsattached to floor and ceiling tracks with l/2in. long Type S-12 steel screws on both sides of studs or bywelded or bolted connections designed in accordance with the AISI specifications.
18. Steel Floor and Ceiling Tracks - (Not Shown, for use with ltem 1A) - Top and bottom tracks of wallassemblies shall consist of steel members, min No. 20 MSG and min. 3-t/2 in. deep. Attached to floor andceiling assemblies with steel fasteners spaced not greater than 24 in. O.C.
1C. Lateral Support Members - (Not shown, for use with Item 1A) - Where required for lateral support ofsteel studs, support may be provided by means of steel straps, channels or other similar means as specified inthe design of a particular steel stud wall system.
2. Gypsum Board* - Any Classified 5/8 in. thick,4 ft. wide, two layers applied vertically. Base layer nailedto wood studs and bearing plates 5 in. OC. with 6d cement coated nails, l-7/8 in. long, 0.0915 in. shank diam.and 7/4 in. diam. head. The face layer, with joints staggered from base layer, nailed to the studs and bearingplates over the base layer, 8 in. OC. with Bd cement coated nails, 2-3/8 in. long, 0.113 in. shank diam. 9/32in. diam. head. For securement to steel studs and track, 1 in. long Type S or S-12 steel screws to be used toinstall the base layer and 1-518 in. long Type S or S-12 steel screws to be used to install the face layer.Spacings of screws that same as described for nails.
See Gypsum Board* (CKNX) category for names of Classified manufacturers.
3. Joints and Nailheads - Wallboard joints covered with tape and joint compound, Nail heads covered withjoint compound.
4. Batts and Blankets* - Unfaced mineral fiber insulation,3-L/2 in. thick, nom 3,0 pcf, pressure fit in thewall cavity between stud, plates, and cross bracing. lt 2by 6 in. studs (Item 1) are used, min. 5-1l2 in. ofunfaced mineral fiber insulation, nom 3.0 pcf, pressure fit in the wall cavity between stud, plates, and crossbracing. Insulation may be applied in multiple layers to achieve final thickness.
F'
See Batts and Blankets* (BZJZ) category for names of Classified manufacturers.
44. Glass Fiber fnsulation - (As an alternate to Item 4 when wood studs are used to frame the wall) -Unfaced glass nom 0.25 pcf, pressure fit in the wall cavity between stud, plates, andcross bracing studs (Item 1) are used, min.5-L/2 in. of unfaced glass fiber batts,nom 0'25 pcf, vity between stud, plates, and cross bracing. Insulation may be appiiedin multiple lay ess.
See Batts and Blankets* (BZJZ) category for names of Classified manufacturers.
5. Building Units* - Building units nailed to the wood framing with 1-718 in. long, 6d nails, spaced 6 in. OC,on the perimeter and 12 in. OC. in the field, When steel studs ale used min. L-7/8in.long steei screwsinstalled 6 in. OC on the perimeter and 12 in. OC in the field.
BARRIER TECHNOLOGY CORP - Type Btazeguard 2-Side
LOUISIANA-PACIFIC CORP - Type Lp FtameBtock 2_Side
6' Exterior Facings - Installed in accordance with the manufacturer's Installation Instructions.
64' Vinyl Siding* - (Optional) - UL Classified exterior plastic siding (molded plastic), fastened to the buildingunits with nails or screws, at the locations specified by the manufacturer.
68. Pafticle Board Sidingx - (Optional) - Oriented strand board, wafer board, or hard board exteriorbuilding sidings including patterned panels.
6C' T-1-11 Plywood - (Optional) - American Plywood Association rated siding series 303 including textures,bough sawn, MDO, brushed, channel grooved, and lap siding.
6D. Cementitious Stucco - (Optional) - Portland cement or synthetic stucco systems with self furring metallath or adhesive base coat. Thickness from 3/8 in. to 3/4 in. dejending on system.
xBearing the UL Classification Mark
Ouestions? Print this page Terms of Use
Last Updated on 2012-09-18
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When the UL Leaf Mark is on the product, or when the word "Environment" is included in the UL Mark, please search the lltEnvironment database for additional information regarding this product's certification.
The appearance of a company's name or product in this database does not in itself assure that products so identified have beenmanufactured under UL's Follow-Up Service. Only those products bearing the UL Mark should be considered to be Listed andcovered under UL's Follow-Up Service. Always look for the Mark on the Droduct.
UL permits the reproduction of the material contained in the Online Certification Directory subject to the following conditions: 1. TheGuide I ns and/or Listings (files) must be presented in their entirety and in a non-misleading manner, without anymanipu (or drawings)' 2. The statement "h,eprinted from the Online Certifications Directory with permission fromUL" mu t to the extracted material. In addition, the reprinted material must include a copyright notice in thefollowin 2 UL LLC".
FIAMrBloct('FIRE.RATED OSB SHEATHING
LP@ FlameBlocl<' Fire-Rated 058 Sheathing:Strength And Fire R.esistance In The Same Panel
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A Better Way To BuildIdeal for fire-rated load-bearing walls, LP FlameBlockSheathing is an approved component of L-hour and2-hour fire-rated assemblies. Its an excellent choicefor use in roof decks for verlical continuity of firewalls, as weII as soffit or open-eave applicationswhere fire performance is needed. Panels areavailable in 7 / 16, 15 /32, 19 / 32 and 23 /32 categories. *
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Covering one or both sides of an LP. OSB panel,the unique Pyrotite' ignition-resistant coating onLP FlameBlock Sheathing is our secret weaponagainst fire. Ttre Pyrotite coating is a layer ofnon-combustible magnesium oxide material udthtwo quarts of water chemically locked into every
Real AdvantagesLP FlameBlock Sheathing is durable, costcompetitive and easy to handle. Thanks to thewater-resistant adhesives and durable Pyrotitecoating, LP FlameBlock panels carq/ an Exposure L
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Plywood impregrnted withfire-retardant dremicals
Panel chemically disintegrates
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Lower allow"able loads and spans
as compared to unteated panels
Chss A Hame Spread Rating
Not Exposue 1 Rated
Vafiation and flatress typical
$$heathing-grade plywood
Hydrated calcium sulfate covered
by thin paper sheets
Calciu-m sulfate retards flameand heat
Litue stuctual sfength
Cl,ass A Flame Spread Rating
Fragile; destoyed if wet
LP@ FlameBlock@ Fire-Rated osB sheathing vs. The competition
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Strength
FlomeSpreod
lob-5iteHandling
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Pyrotite coating slorvs thespread offlame and heat
Certified for f.rll load and span ratingswith no deductions
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E>rlrosure 1 rate4 withstands weatherduring normal consfuction delays
Consistent lcrot-free; wiII not warp,cup, splitordelaminaG
LP@ FlameBlocl<@
Fire-Rated 0SB SheathingProduct Summary
. Structural Fire-Rated Sheathing '
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. Exposure 1 Classification, Durableand Easy to Handle on Job Site
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For more information, including specifi cations,warranty details, code reports, wall assembliesand more, go to LPCorp.com,rFlameBlock.
ldeal For A Variety Of Applications,Including:
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o 2-Hour Party Walls(UL Listing BXUV-U350)
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k
Live burn demonsttalion <<rnduded al the Sa(ramenlo Fi/e Department Division o{ Traininq
10
1
10
2
10
3
10
5B
10
5A
10
5C
10
5D
11
0
11
1
10
6
ST
2-1
10
4
11
4B
ST
1-1
GENERAL NOTES
LEGEND
HORIZONTAL ASSEMBLIES
211227
MASON-WILLIAMS
MIXED-USE
APARTMENTS
N
SCALE:
1. GROUND FLOOR PLAN - NORTH
1/8" = 1'-0"
A201
01.04.2013
ER
GROUND FLOOR
PLAN - NORTH
10
5C
10
5D
11
0
11
1
112
10
6
11
4A
ST
2-1
11
5
11
6A
11
6B
11
6C
11
6D
116F
117A
11
7C
ST
4-1
117B
11
4B
114C
11
8
11
6E
11
7D
119A 119B
GENERAL NOTES
LEGEND
HORIZONTAL ASSEMBLIES
211227
MASON-WILLIAMS
MIXED-USE
APARTMENTS
N
SCALE:
1. GROUND FLOOR PLAN - SOUTH
1/8" = 1'-0"
A202
01.04.2013
ER
GROUND FLOOR
PLAN - SOUTH
X0
2
ST1-X
X0
1
X0
4X
03
X0
6X
05
X0
8X
07
X1
0
X0
9
X1
1
X1
2
ST
2-X
X31B
X4
0
X3
1A
GENERAL NOTES
LEGEND
HORIZONTAL ASSEMBLIES
211227
MASON-WILLIAMS
MIXED-USE
APARTMENTS
N
SCALE:
1. 2ND FLOOR PLAN - NORTH
1/8" = 1'-0"
A203
XX.XX.XXXX
ER
SECOND
FLOOR PLAN -
NORTH
X1
1
ST
2-X
ST3-X
X1
4X
13
X1
6X
15
X1
8
X1
7
X2
0
X1
9
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2
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24
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GENERAL NOTES
LEGEND
HORIZONTAL ASSEMBLIES
211227
MASON-WILLIAMS
MIXED-USE
APARTMENTS
N
SCALE:
1. 2ND FLOOR PLAN - SOUTH
1/8" = 1'-0"
A204
XX.XX.XXXX
ER
SECOND
FLOOR PLAN -
SOUTH
+ 64'-2.5"
+ 59'-10.5"
+ 48'-3.5"
+ 64'-2.5"
211227
MASON-WILLIAMS
MIXED-USE
APARTMENTS
N
SCALE:
1. ROOF PLAN - NORTH BUILDING
1/8" = 1'-0"
A301
01.04.2013
ER
ROOF PLAN
NORTH BUILDING
ELEV
+ 55'- 4"
+ 51'- 0"
25'-19.5"
211227
MASON-WILLIAMS
MIXED-USE
APARTMENTS
A302
01.04.2013
ER
ROOF PLAN
SOUTH BUILDING
N
SCALE:
1. ROOF PLAN - SOUTH BUILDING
1/8" = 1'-0"
LEGEND
KEY NOTES
211227
MASON-WILLIAMS
MIXED-USE
APARTMENTS
SCALE:
1. WEST ELEVATION - NORTH BUILDING
1/8" = 1'-0"
A401
01.04.2013
ER
EXTERIOR
ELEVATIONS
SCALE:
2. WEST ELEVATION - SOUTH BUILDING
1/8" = 1'-0"
211227
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APARTMENTS
SCALE:
2. BUILDING SECTION
3/32" = 1'-0"
A501
01.04.2013
ER
BUILDING
SECTIONS
SCALE:
1. BUILDING SECTION
3/32" = 1'-0"
LOBBY OPEN STAIR
GUARDRAIL @ ROOF HATCH
TRASH CHUTE PLAN