apa rim in fire rated assemblies d350
TRANSCRIPT
D A T A F I L E
To slow or prevent the spread of fire, building
codes require fire-resistant or fire-rated assem-
blies in certain locations, occupancies, and
types of buildings. When fire-rated walls and/
or floor/ceiling assemblies are required, a fire
barrier over the walls is typically necessary
to prevent flames from escaping the confine-
ment provided by the wall or ceiling assembly.
The barrier may be in the form of continuous
rim board on top of the wall and parallel with
the floor joists or as continuous rim board
along the top of the wall and perpendicular to
the joists. A fire barrier can also be made by
inserting individual sections of snugly fit rated
material over the wall and between the floor
joists and carefully sealed against fire passage.
This last method is more labor intensive, particularly when wood I-joists or trusses are used to support the floor.
Because the flammability and ignitability of the adhesive used in the rim boards is less than that of the wood, the
adhesive does not melt prior to ignition. The wood itself determines the flammability of the rim boards.
The assemblies diagrammed in this publication are based on char rates of APA Rim Boards as determined by the United
States Forest Service, Forest Products Laboratory in Madison, Wisconsin.(a) The Rim Boards in this brochure were
subjected to fire tests that met the requirements of ASTM E119 and CAN/ULC S101.
FIRE-RESISTANT RIM BOARD ASSEMBLIES
The rim board assemblies on the following pages will achieve the fire resistances shown.
(a) White, R. H. 2003. Fire Resistance of Engineered Wood Rim Board Products. Research Paper FPL-RP-610. USDA Forest Service, Forest Products Laboratory. Madison, WI.
Rim Board® is a registered trademark of APA – The Engineered Wood Association.
APA Rim Board®in Fire-Rated Assemblies
A gypsum wall board provides fire resistance for rim board assembly (see “RB1,” next page.)
APA Performance-Rated Rim Boards are manufactured and tested under the requirements of ANSI/APA PRR 410 or APA PRR 401
Form No. D350B ■ © 2015 APA – The Engineered Wood Association ■ www.apawood.org 2
Data File: APA Rim Board in Fire-Rated Assemblies
FIRE RESISTANCE RATED RIM BOARD ASSEMBLY RB1
This fire resistance design is listed in accordance with ASTM E119 and CAN/ULC S101RB1RB3
RB4
RB5
RB6
RB2
Load
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Load Load
Load
LoadLoad LoadLoad
Load Load
Load Load
LoadLoad LoadLoad
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building OfficialsSame as
right-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
END WALL CONFIGURATION BASE ASSEMBLY
Rim Board Thickness, in.
Rim Board Protection
Ceiling Membrane Req. for 1-hr
Ceiling Membrane Req. for 2-hr
Stud Size
Stud Size
A B C C D E
1
Unprotected 1-hour Fire-rated Assembly 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X 5/8" Type X 90-min Fire-rated Assembly 2x4 2x4
(2) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(2) 5/8" Type X No Ceiling Required 5/8" Type X 2x6 2x4
1-1/8
Unprotected 1-hour Fire-rated Assembly 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X 5/8" Type X 90-min Fire-rated Assembly 2x4 2x4
(2) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(2) 5/8" Type X No Ceiling Required 5/8" Type X 2x6 2x4
1-1/4
Unprotected 1-hour Fire-rated Assembly 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X 5/8" Type X 90-min Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(2) 5/8" Type X No Ceiling Required 5/8" Type X 2x6 2x4
1-1/2
Unprotected 1-hour Fire-rated Assembly 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 5/8" Type X 90-min Fire-rated Assembly 2x6 2x4
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(2) 5/8" Type X No Ceiling Required 5/8" Type X 2x6 2x6
1-3/4
Unprotected 1-hour Fire-rated Assembly 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 5/8" Type X 90-min Fire-rated Assembly 2x6 2x4
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 45-min Fire-rated Assembly 2x6 2x6
(2) 5/8" Type X No Ceiling Required 5/8" Type X 2x6 2x61) Rim assembly for fire from inside of structure. 2) Gypsum wallboard shown on the ceiling is to protect the rim board only. It does not necessarily cause the floor assembly to be rated. 3) Attach 1-layer Type X (1/2 or 5/8-inch) gypsum wallboard to rim board with 1-1/2-inch Type W drywall screws spaced 12 inches o.c. 4) Attach 2-layer Type X (1/2 or 5/8-inch) gypsum wallboards to rim board with 2-inch Type W drywall screws spaced 12 inches o.c. 5) Provide min. 1-3/4-inch bearing for I-joist. 6) Use only fire-rated gypsum wallboard. Type C may be substituted for Type X. 7) Rim board and gypsum wallboard thicknesses are shown as minimums. Thicker rim board and gypsum wallboard may be substituted. 8) When 2-layer gypsum wallboards are used, I-joist end nails shall be 16d box (0.135 inch x 3-1/2 inches) nails. 9) Rim board needs to be sized for vertical and lateral loads.
Form No. D350B ■ © 2015 APA – The Engineered Wood Association ■ www.apawood.org 3
Data File: APA Rim Board in Fire-Rated Assemblies
FIRE RESISTANCE RATED RIM BOARD ASSEMBLY RB2
This fire resistance design is listed in accordance with ASTM E119 and CAN/ULC S101
RB1RB3
RB4
RB5
RB6
RB2
Load
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Load Load
Load
LoadLoad LoadLoad
Load Load
Load Load
LoadLoad LoadLoad
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building OfficialsSame as
right-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
SINGLE WALL CONFIGURATION BASE ASSEMBLY
Rim Board Thickness, in.
Rim Board Protection
Ceiling Membrane Req.for 1-hr
Ceiling Membrane Req.for 2-hr
Stud Size
Stud Size
A B C C D E
1
Unprotected 45-min Fire-rated Assembly 2-hour Fire-rated Assembly 2x6 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x6 2x6
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x8 2x6
(2) 1/2" Type X No Ceiling Required 5/8" Type X 2x8 2x6
(2) 5/8” Type X No Ceiling Required 1/2" Type X 2x8 2x6
1-1/8
Unprotected 45-min Fire-rated Assembly 2-hour Fire-rated Assembly 2x6 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x8 2x6
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x8 2x6
(2) 1/2" Type X No Ceiling Required 5/8" Type X 2x8 2x6
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x8 2x6
1-1/4
Unprotected 5/8" Type X 2-hour Fire-rated Assembly 2x6 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x8 2x6
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x8 2x6
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x8 2x6
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x8 2x6
1-1/2
Unprotected 5/8" Type X 2-hour Fire-rated Assembly 2x6 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x8 2x6
(1) 5/8" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x8 2x6
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x8 2x6
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x8 2x8
1-3/4
Unprotected 5/8" Type X 90-min Fire-rated Assembly 2x6 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x8 2x6
(1) 5/8" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x8 2x6
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x8 2x6
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x8 2x81) Rim assembly for fire from either side of wall.2) Gypsum wallboard shown on the ceiling is to protect the rim board only. It does not necessarily cause the floor assembly to be rated. 3) Attach 1-layer Type X (1/2 or 5/8-inch) gypsum wallboard to rim board with 1-1/2-inch Type W drywall screws spaced 12 inches o.c. 4) Attach 2-layer Type X (1/2 or 5/8-inch) gypsum wallboards to rim board with 2-inch Type W drywall screws spaced 12 inches o.c. 5) Provide min. 1-3/4-inch bearing for I-joist.6) Use only fire-rated gypsum wallboard. Type C may be substituted for Type X.7) Rim board and gypsum wallboard thicknesses are shown as minimums. Thicker rim board and gypsum wallboard may be substituted. 8) Toenailing from the I-joist flange to the rim is permitted. When 2-layer (or more) gypsum wallboards are used, I-joist end nails shall be 16d
box (0.135 inch x 3-1/2 inches) nails.9) Rim board needs to be sized for vertical and lateral loads.
Form No. D350B ■ © 2015 APA – The Engineered Wood Association ■ www.apawood.org 4
Data File: APA Rim Board in Fire-Rated Assemblies
RB1RB3
RB4
RB5
RB6
RB2
Load
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Load Load
Load
LoadLoad LoadLoad
Load Load
Load Load
LoadLoad LoadLoad
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building OfficialsSame as
right-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
FIRE RESISTANCE RATED RIM BOARD ASSEMBLY RB3
This fire resistance design is listed in accordance with ASTM E119 and CAN/ULC S101
DOUBLE WALL CONFIGURATION WITH LOAD TRANSFER BASE ASSEMBLY
Rim Board Thickness, in.
Rim Board Protection
Ceiling Membrane Req. for 1-hr
Ceiling Membrane Req.for 2-hr
Stud Size
Stud Size
A B C C D E
1
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X No Ceiling Required 45-min Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required No Ceiling Required 2x6 2x4
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x4
1-1/8
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X No Ceiling Required 5/8" Type X 2x4 2x4
(2) 1/2" Type X No Ceiling Required No Ceiling Required 2x6 2x4
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x4
1-1/4
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 45-min Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X No Ceiling Required 5/8" Type X 2x4 2x4
(2) 1/2" Type X No Ceiling Required No Ceiling Required 2x6 2x4
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x4
1-1/2
Unprotected No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 5/8" Type X 2x6 2x4
(1) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 1/2" Type X No Ceiling Required No Ceiling Required 2x6 2x4
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x6
1-3/4
Unprotected No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x6
(1) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x6
(1) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x6
(2) 1/2" Type X No Ceiling Required No Ceiling Required 2x6 2x6
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x61) Rim assembly for fire from either side of wall. “With load transfer” assumes load transfers to the adjacent rim board if the fire exposed rim
board fails.2) Gypsum wallboard shown on the ceiling is to protect the rim board only. It does not necessarily cause the floor assembly to be rated. 3) Attach 1-layer Type X (1/2 or 5/8-inch) gypsum wallboard to rim board with 1-1/2-inch Type W drywall screws spaced 12 inches o.c. 4) Attach 2-layer Type X (1/2 or 5/8-inch) gypsum wallboards to rim board with 2-inch Type W drywall screws spaced 12 inches o.c. 5) Provide min. 1-3/4-inch bearing for I-joist.6) Use only fire-rated gypsum wallboard. Type C may be substituted for Type X.7) Rim board and gypsum wallboard thicknesses are shown as minimums. Thicker rim board and gypsum wallboard may be substituted. 8) Toenailing from the I-joist flange to the rim is permitted. When 2-layer gypsum wallboards are used, I-joist end nails shall be 16d box
(0.135 inch x 3-1/2 inches) nails.9) Rim board needs to be sized for vertical and lateral loads.
Form No. D350B ■ © 2015 APA – The Engineered Wood Association ■ www.apawood.org 5
Data File: APA Rim Board in Fire-Rated Assemblies
RB1RB3
RB4
RB5
RB6
RB2
Load
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Load Load
Load
LoadLoad LoadLoad
Load Load
Load Load
LoadLoad LoadLoad
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building OfficialsSame as
right-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
FIRE RESISTANCE RATED RIM BOARD ASSEMBLY RB4
This fire resistance design is listed in accordance with ASTM E119 and CAN/ULC S101
DOUBLE WALL CONFIGURATION WITH LOAD TRANSFER BASE ASSEMBLY
Rim Board Thickness, in.
Rim Board Protection
Ceiling Membrane Req. for 1-hr
Ceiling Membrane Req. for 2-hr
Stud Size
Stud Size
A B C C D E
1
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
1-1/8
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x4
1-1/4
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X No Ceiling Required 45-min Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x4
1-1/2
Unprotected No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 5/8" Type X 2x6 2x4
(1) 5/8" Type X No Ceiling Required 5/8" Type X 2x6 2x4
(2) 1/2" Type X No Ceiling Required No Ceiling Required 2x6 2x4
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x6
1-3/4
Unprotected No Ceiling Required 1-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(1) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 1/2" Type X No Ceiling Required No Ceiling Required 2x6 2x6
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x61) Rim assembly for fire from either side of wall. “With load transfer” assumes load transfers to the adjacent rim board if the fire exposed rim
board fails.2) Gypsum wallboard shown on the ceiling is to protect the rim board only. It does not necessarily cause the floor assembly to be rated. 3) Attach 1-layer Type X (1/2 or 5/8-inch) gypsum wallboard to rim board with 1-1/2-inch Type W drywall screws spaced 12 inches o.c. 4) Attach 2-layer Type X (1/2 or 5/8-inch) gypsum wallboards to rim board with 2-inch Type W drywall screws spaced 12 inches o.c. 5) Provide min. 1-3/4-inch bearing for I-joist.6) Use only fire rated gypsum wallboard. Type C may be substituted for Type X.7) Rim board and gypsum wallboard thicknesses are shown as minimums. Thicker rim board and gypsum wallboard may be substituted. 8) Toenailing from the I-joist flange to the rim is permitted. When 2-layer gypsum wallboards are used, I-joist end nails shall be 16d box
(0.135 inch x 3-1/2 inches) nails.9) Rim board needs to be sized for vertical and lateral loads.
Form No. D350B ■ © 2015 APA – The Engineered Wood Association ■ www.apawood.org 6
Data File: APA Rim Board in Fire-Rated Assemblies
FIRE RESISTANCE RATED RIM BOARD ASSEMBLY RB5
This fire resistance design is listed in accordance with ASTM E119 and CAN/ULC S101
RB1RB3
RB4
RB5
RB6
RB2
Load
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Load Load
Load
LoadLoad LoadLoad
Load Load
Load Load
LoadLoad LoadLoad
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building OfficialsSame as
right-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
DOUBLE WALL CONFIGURATION WITH NO LOAD TRANSFER BASE ASSEMBLY
Rim Board Thickness, in.
Rim Board Protection
Ceiling Membrane Req.
for 1-hr
Ceiling Membrane Req.
for 2-hr
Stud Size
Stud Size
A B C C D E
1
Unprotected 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(2) 1/2" Type X No Ceiling Required 5/8" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
1-1/8
Unprotected 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(2) 1/2" Type X No Ceiling Required 5/8" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
1-1/4
Unprotected 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 5/8" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
1-1/2
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x6 2x4
(1) 5/8" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x6
1-3/4
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(1) 5/8" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x6
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x61) Rim assembly for fire from either side of wall. “With no load transfer” assumes no load transfers to the adjacent rim board if the fire
exposed rim board fails.2) Gypsum wallboard shown on the ceiling is to protect the rim board only. It does not necessarily cause the floor assembly to be rated. 3) Attach 1-layer Type X (1/2 or 5/8-inch) gypsum wallboard to rim board with 1-1/2-inch Type W drywall screws spaced 12 inches o.c. 4) Attach 2-layer Type X (1/2 or 5/8-inch) gypsum wallboards to rim board with 2-inch Type W drywall screws spaced 12 inches o.c. 5) Provide min. 1-3/4-inch bearing for I-joist.6) Use only fire-rated gypsum wallboard. Type C may be substituted for Type X.7) Rim board and gypsum wallboard thicknesses are shown as minimums. Thicker rim board and gypsum wallboard may be substituted. 8) Toenailing from the I-joist flange to the rim is permitted. When 2 layer gypsum wallboards are used, I-joist end nails shall be 16d box (0.135
inch x 3-1/2 inches) nails.9) Rim board needs to be sized for vertical and lateral loads.
Form No. D350B ■ © 2015 APA – The Engineered Wood Association ■ www.apawood.org 7
Data File: APA Rim Board in Fire-Rated Assemblies
FIRE RESISTANCE RATED RIM BOARD ASSEMBLY RB6
This fire resistance design is listed in accordance with ASTM E119 and CAN/ULC S101
RB1RB3
RB4
RB5
RB6
RB2
Load
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Load Load
Load
LoadLoad LoadLoad
Load Load
Load Load
LoadLoad LoadLoad
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building OfficialsSame as
right-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum boards (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (D)
Rated wall assembly
Gypsum board (B)
Rim board (A)
Ceiling and wall ratingsas required by Building Officials
Ceiling membrane (C)
Stud (E)
Rated wall assembly
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Jan. 4, 2013Fire_Assembly_Bosie_Rim_Board_2013_v4.eps
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
Same asright-handside drawing
DOUBLE WALL CONFIGURATION WITH NO LOAD TRANSFER BASE ASSEMBLY
Rim Board Thickness, in.
Rim Board Protection
Ceiling Membrane Req. for 1-hr
Ceiling Membrane Req. for 2-hr
Stud Size
Stud Size
A B C C D E
1
Unprotected 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(2) 1/2" Type X No Ceiling Required 5/8" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
1-1/8
Unprotected 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
1-1/4
Unprotected 5/8" Type X 2-hour Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 5/8" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required 1/2" Type X 2x6 2x4
1-1/2
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X 1/2" Type X 90-min Fire-rated Assembly 2x6 2x4
(1) 5/8" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required 1/2" Type X 2x6 2x4
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x6
1-3/4
Unprotected 1/2" Type X 90-min Fire-rated Assembly 2x4 2x4
(1) 1/2" Type X No Ceiling Required 1-hour Fire-rated Assembly 2x6 2x4
(1) 5/8" Type X No Ceiling Required 45-min Fire-rated Assembly 2x6 2x4
(2) 1/2" Type X No Ceiling Required No Ceiling Required 2x6 2x6
(2) 5/8" Type X No Ceiling Required No Ceiling Required 2x6 2x61) Rim assembly for fire from either side of wall. “With no load transfer” assumes no load transfers to the adjacent rim board if the fire
exposed rim board fails.2) Gypsum wallboard shown on the ceiling is to protect the rim board only. It does not necessarily cause the floor assembly to be rated. 3) Attach 1-layer Type X (1/2 or 5/8-inch) gypsum wallboard to rim board with 1-1/2-inch Type W drywall screws spaced 12 inches o.c. 4) Attach 2-layer Type X (1/2 or 5/8-inch) gypsum wallboards to rim board with 2-inch Type W drywall screws spaced 12 inches o.c. 5) Provide min. 1-3/4-inch bearing for I-joist.6) Use only fire-rated gypsum wallboard. Type C may be substituted for Type X.7) Rim board and gypsum wallboard thicknesses are shown as minimums. Thicker rim board and gypsum wallboard may be substituted. 8) Toenailing from the I-joist flange to the rim is permitted. When 2-layer gypsum wallboards are used, I-joist end nails shall be 16d box
(0.135 inch x 3-1/2 inches) nails.9) Rim board needs to be sized for vertical and lateral load.
APA Rim Board® in Fire-Rated AssembliesWe have field representatives in many major U.S. cities and in Canada who can help answer questions involving APA trademarked products.
For additional assistance in specifying engineered wood products, contact us:
APA HEADQUARTERS7011 So. 19th St. ■ Tacoma, Washington 98466
(253) 565-6600 ■ Fax: (253) 565-7265
PRODUCT SUPPORT HELP DESK(253) 620-7400 ■ [email protected]
DISCLAIMERThe information contained herein is based on APA – The Engineered Wood Association’s continuing programs of laboratory testing, product research, and comprehensive field experi-ence. Neither APA, nor its members make any warranty, expressed or implied, or assume any legal liability or responsibility for the use, application of, and/or reference to opinions, findings, conclusions, or recommendations included in this publication. Consult your local jurisdiction or design professional to assure compliance with code, construction, and performance require-ments. Because APA has no control over quality of workmanship or the conditions under which engineered wood products are used, it cannot accept responsibility of product performance or designs as actually constructed.
Form No. D350B/Revised February 2015