REV1 APPROVED BLD2023-1236 FIRE RATED WALLCODE COMPLJANCE
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WASHINGTON STATE BUILDING CODE 05C 2018 WITH ST. OF WA AMENDMENTS)
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OBJECTIVE - PROVIDE A ONE HOUR FIRE RATED FLOOR -CEILING ASSEMBLY
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�NERAL
REQUIREMENT - Methods for determining fire resistance.
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The application of any of Ne methods listed In lhs section shall be based on the fire exposure and acceptance criteria
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Specified in ASTM E119 or ILL 263 The required fire resistance of a budding element, component or assembly shall be
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permitted to be established by any of the following methods or procedures
3.Calculalions in accordance with Section 722
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-SECTION
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COMPANCE
REQUIREMENT - 722.6.2.1 Fire -resistance, rating of wood frame assemblies
The fire,resislance rating of a wood frame assembly is equal to the sum of the time assigned to the membrane on the
fire -exposed side, the time assigned to the framing members and the time assigned for additional Contribution by other
protective measures such as Insulation The membrane on the unexposed side shall not be Included in determining the fire
iL resistance of the assembly
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COMPLIANCE -
GWB FASTENER
- WOOD FRAME FLOOR = 10 MIN [TABLE 122.6 2(2)]
/
etociclNG, } x s STAGGER BASE AND FACE
- JOST SPACE FILLED WITH MINERAL WOOL INSULATION = 15 MIN [TABLE 1.2 2.6 2(5)1
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LATER Gw0 LONG END JOINTS
- (2) LAYERS 5/8" REGULAR GYPSUM BOARD = 2 X 30 = 60 MIN [TABLE 122 6 20))
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Two LAYERS sle-
' TOTAL - 85 MN > 60 MIN => COMPLIES
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ERa AT 90ARD, OR EMED
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DETAILS
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REQUIREMENT-722.6.22 Time assigned to membranes.
Table 722.6.2(1) Indicates the time assigned to membranes on the fire -exposed side
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EDGES
COMPLIANCE - (2) LAYERS REGULAR GYPSUM BOARD = 2 X 30 = 60 MIN
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NOTE- ADJUST
REQUIREMENT-722.6.2.4 Floors and roofs
INDICATED GWB
In the Case of a floor or roof, the standard test provides only for testing for fire exposure from below Except as noted in
FASTENER
Section 703.3, Item 5, Boor or roof assemblies of wood framing shall have an upper membrane Consisting of a subll r and
LENGTHS AS
finished Boor conforming to Table 722.6 2(4) or any other membrane that has a contribution to fire resistance of non less
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REQUIRED TO
FLOOR/CBIJNG ASSEMBLY, WEST SIDE OF NEW BEDROOM N-5 5ECTION
than 15 minutes in Table 722.6.2(1).
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ACTUAL GWB
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COMPLIANCE -THE THICKEST WOOD PANEL PER TABLE 122.6 2(I) IS 19/3I' WITH AN ASSIGNED
AND RESILIENT
TIME OF 15 MIN THE ACTUAL 15 (2) 314" WOOD LAYERS THE GREATER TOTAL THICKNESS
((�IND
CHANNEL
PROVIDES A LONGER FIRE RESISTANCE THAN THE SINGLE REQUIRED LATER (HARMATHI'5
DIMENSIONS TO
RULE I).
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RESULT IN FULL
ENGAGEMENT
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REQUIREMENT-722.6.2.5 Additional protection
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OF SCREW TO
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Table 722.6.2(5) indicates the time Increments to be added to the fire resistance where glass fiber, rockwool, slag mineral
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RESILIENT
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wool or cellulose insulation is incorporated In the assembly.
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CHANNEL BUT
FASTEN BASE
COMPLIANCE - TA13L E 122.6.2(5) INDICATES A FIRE RES45TANCE TIME INCREMENT OF 15 MIN
to W QF
SCREW NOT
LAYER GW9 TO
RESIDENT
ADDED WITH JOIST SPACE FILLED WITH MINERAL WOOL WITH MINIMUM DENSITY OF 33 LB/FT3.
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TOUCHING WOOD
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SPECIFIED: ROCKWOOL SAFE (4.0 LB/FT3) OR EQUAL
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JOIST,
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SCRPu )IA' LONG
REQUIREMENT -722 6.2.6 Fastening.
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Fastening of wood frame assemblies and the fastening of membranes to the wood framing members shall be done in
Chapter 23
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accordance with
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s Ci-IANNEL AT DASE LATER
"IS e T (pYTT) ENDOQICLE STEEL RESLIENT
2306.2.1 Gypsum board diaphragm ceilings.
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.' '• FASTEN RESILIENT
-
JOINTS, SPACE FASTENERS CUANNEI AT FACE LATER
(BUTT)
cASTEN FACE
Gypsum board diaphragm Ceilings shall be in accordance with Section 2508-6.
OHANFELS TO
e�'/STEEL
I -In EJCN GROM EDGE, T GWB SNORT ENO
./ ' JOINTS, SPACE FASTENERS
(.AVER GW9 TO
FASTQER
ISLOCF riles I % IB
WOOD JOISTS Wdw
TYPE W
INCN OC
® -. I•N} EaLw FROFI EDGE, T NCN
RESIUENT
CN4NNEL WTM
2508.6.4 F¢SI¢n¢R.LL
Fasteners for the board or to a horizontal diaphragm ceiling shay
STEEL TYP= 5
used attachment of gypsum gypsum panel products
be as defined in Table 2508.6. Fasteners shall be Spaced not more than 7 inches (178 mm) on center at all supports.
Including perimeter blocking. and not more than 318 inch (9.5 mm) from the edges and ends of the gypsum board or
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gypsum panel product.
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COMPLIANCE - FASTENING PER 2508.6.4 EXCEPT FASTENERS SPACED 1-1/2 INCH FROM THE
EDGE OF GWB SHORT (BUTT) EN05 SIGNIFICANT FIRE RE515TANCE RESULTS AS COMPARED
sr. AS SNOW
FASTENER>. AT TO 3/0 INCH SPACING [REFERENCE: NATIONAL RESEARCH COUNCIL CANADA, IRC-IR-164,
=_xT=_RIOR wAu,
PANEL W.E. STAGGER BASE AND FACE
"YER GWD SNORT (DUTT)
"RESULTS OF FIRE RESISTANCE TESTS ON FULL-SCALE FLOOR ASSEMBLIES", SULTAN ET AL,
6 Feb 202d
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SPACED nil% T"
CC I -I I}- Ftr -I END JaNT> 1111 I.C. SPACE
SECTION 8.2]
EDGE OFI LONG BETWEEN
ExT EWOR
SHEAiwNG
SIDES RESIWENT
CNANiELB,
TYP
GYPDOARD
+rO
I\TnSTriR�
T 115 SECTION 't'
J JONAL
10 F:5 2024
FLOOR/CEILJNG A55EMBLY WE5T SIDE OF NEW BEDROOM E-W SECTION
1/4„ = I"
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24.02.1
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1 °` 2
-
NOTE ADJUST
INDICATED GWB
FASTENER
LENGTHS AS
REQUIRED TO
ACTUAL GWB
AND RESILIENT
CHANNEL
DIMENSIONS TO
RESULT IN FULL
ENGAGEMENT
OF SCREW TO
RESILIENT
CHANNEL BUT
SCREW NOT
TOUCHING WOOD
J015T
V. wAR.-
2 X 6 euTTED C
Axle, AD'oc
EMERIOR
54EATiFNG
EXTERIOf
TIP
STEEL -EM
C4ANNEL.
' �%CED I6 INCw
' lj• j J FASTEN RESIl1EM
' FASTENER l'/�'/j
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STEEL RE5'LAYE
'� '� GIOGKING, 2 X 6 .% �•. '� �� S'/C4An ELS i0
FASTEN FACE 'WOOD JOSTS WITw
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GWB�940RT (BIIT) ENDER
r % %,j, •' S /LATER GWD TO 5TEEL TTPE W
FASTEN BASE
icx TS, 5PACE FA51 ERS
REsLiE,n KRgp. L-r/2'
LAYER GWB TO
ES LEM
r'l21NC4 FROM =_DGE. T C.
OC
C ANtiL Wiu IQVG TIp
- -' �� . %f✓ ' STEMLTT?E S
/ ��' / .'f� SCREW. I- J/D• .•
CHANNEL Jn
5 SC TYPE
EW 31:-I5 pJG
-
51e' TTPE-X
GYPBOARD
MEMOR
WALLJ-wR RRE
RATED, TIP.
I FACE
(Burr)
• \ TWO LAYER55le'
1 RE4WAR GTPSUI.1 pgIBLE STEEL R-ENT I/ID WE 5PACE
BE1W®E
BOARD, OIbEMED CHANNPI AT FACE LATER REENENT
FASTENERS, AT LONG EDGE GWB -T (BUTT) END C44"lr0If15, TIP
A PAN2 EDGE.- � s. 5PAC. FASTENERS
C SPACED MAX Y TO RESNFM ry/2 MC4 FROM EDGE, 1 I4C4
FROM CHANN=y5, RN54 OC
EDGE ALL EDGES
FLOOR/CEILING ASSEMBLY, EAST SIDE OF NEW BEDROOM, E-UJ SECTION
1/4" = I"
FLOOR/CEILNG ASSEMBLY, EAST SIDE OF NEW BEDROOM, N-5 5ECTION
1/4„ = I„
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CODE COMPLIANCE
WASHINGTON STATE BUILDING CODE (IBC 2018 WITH ST. OF WA AMENDMENTS)
OBJECTIVE - PROVIDE A ONE HOUR FIRE RATED FLOOR -CEILING ASSEMBLY
REQUIREMENT - 703.3 Methods for determining fire resistance
The application of any of the methods listed in this section shall be based on the fire exposure and acceptance
cntena specified in ASTM E119 or ILL 263. The required fire resistance of a budding element, component or
assembly shall be permitted to be established by any of the following methods or procedures'
3.Calculabons n accordance with Section 722.
COMPLIANCE - SECTION 122 USED
REQUIREMENT - 722.6 2.1 Fire -resistance rating of wood frame assemblies.
The fire -resistance rating of a wood frame assembly is equal to the sum of the time assigned to the membrane
on the fire -exposed side, the time assigned to the framing members and the time assigned for additional
contribution by other protective measures such as Insulation. The membrane on the unexposed side shall not
be included in determining the fire resistance of the assembly.
COMPLIANCE -
- WOOD FRAME FLOOR = 10 MIN. (TABLE 122. 6.20))
- JOIST SPACE FILLED WITH MINERAL WOOL INSULATION - 15 MIN. (TABLE 12.2. 6.2(5))
- (2) LAYERS 518" REGULAR GYPSUM BOARD = 2 X 3e = 60 MIN [TABLE 122-620))
- TOTAL - 85 MIN > 60 MIN => COMPLIES
DETAILS
REQUIREMENT -722 6.2.2 Time assigned to membranes.
Table 722.6 2(1) indicates the time assigned to membranes on the fire -exposed side.
COMPLIANCE - (2) LAYER 5/8" REGULAR GYPSUM BOARD = 2 X 30 = 60 MIN
REQUIREMENT-722.6.2.4 Floors and roofs.
In the case of a floor or roof, the standard test provides only for testing for fire exposure from below. Except as
noted In Section 703 3, Item 5, Boor or roof assemblies of wood framing shall have an upper membrane
consisting of a subfloor and finished floor conforming to Table 722 6.2(4) or any other membrane that has a
contribution to fire resistance of not less than 15 minutes in Table 722 6.20)
COMPLIANCE - THE THICKEST WOOD PANEL PER TABLE 122.1 IS 15/32' WITH AN
ASSIGNED TIME OF 15 MIN. THE ACTUAL IS (1) 3/4' HARD WOOD AND (I) 1-1/2`
DIMENSIONAL LUMBER LAYERS THE GREATER TOTAL THICKNESS PROVIDES A
LONGER FIRE RESISTANCE THAN THE SINGLE REQUIRED LAYER (HARMATHY'S RULE
1).
REQUIREMENT-722.6.2.5 Additional protection.
Table 722 6.2(5) indicates the hme mcrements to be added to the fire resistance where glass fiber, rockwool.
slag mineral wool or cellulose Insulation is Incorporated in the assembly.
COMPLIANCE - TABLE 122.6.2(5) INDICATES A FIRE RESISTANCE TIME INCREMENT OF
15 MIN ADDED WITH JOIST SPACE FILLED WITH MINERAL WOOL WITH MINIMUM
DENSITY OF 3.3 LB/FT3 SPECIFIED: ROCKWOOL SAFE (4.0 LS/FT3) OR EQUAL
REOUIREMENT - 722.6 2.6 Fastening
Fastening of wood frame assemblies and the fastening of membranes t4 the wood framing members shall be
done in accordance with Chapter 23.
2306.2.1 Gypsum board diaphragm callings
Gypsum board diaphragm ceilings shall be in accordance with Secl on 2508 6
2508.6.4 Fasteners
Fasteners used for the attachment of gypsum board or gypsum panel products to a horizontal diaphragm
ceiling shall be as defined in Table 2508.6. Fasteners shall be spaced not more than 7 inches (178 mm) on
center at all supports, including perimeter docking, and not more than 318 inch (9.5 mm) from the edges and
ends of the gypsum board or gypsum panel product.
COMPLIANCE - FASTENING PER 2508.E 4 EXCEPT FASTENERS SPACED 1-1/2 INCH
FROM THE EDGE OF GWB SHORT (BUTT) ENDS SIGNIFICANT FIRE RESISTANCE
RESULTS AS COMPARED TO 3/8 INCH SPACING [REFERENCENATIONAL RESEARCH
COUNCIL CANADA, IRC-IR-164, "RESULTS OF FIRE RESISTANCE TESTS ON
FULL-SCALE FLOOR ASSEMBLIES", SULTAN ET. AL., SECTION 8.21
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°Nt 6 Feb 2024
20 FEB 2024
24.02.1
FP-2
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