HomeMy WebLinkAboutFile Documents.747 S Galena St.0122.2019 (26).ARBKSTANDARDS USG Durock® cement board exceeds ANSI standards for cementitious backer units (CBU). See ANSI A118.9 for test
methods and specifications for CBU and ANSI A108.11 for interior installation of CBU. Exceeds industry standards
as an exterior substrate for exterior finishes. Exceeds ASTM C1325 standards for nonasbestos fiber-mat reinforced
cementitious backer units.
LU
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PARTITIONS One-Hour Fire-Rated Construction Non-Load-Bearing, Steel Framed Acoustical Performance
Construction Detail Description Test Number STC Test Number
45⁄8"
• 1/2" USG Durock® Brand cement board
– 3-1/2" 20-gauge steel studs 16" o.c.
– 3" ROXUL mineral wool AFB
• 5/8" USG Sheetrock® Brand Firecode® Gypsum Panels, one side
U433
Two-Hour Fire-Rated Construction Non-Load-Bearing, Steel Framed Acoustical Performance
Construction Detail Description Test Number STC Test Number
61⁄8"
• 1/2" USG Durock® Brand cement board and 1/4" ceramic tile
• Base layer 1/2" USG Sheetrock® Brand Firecode® C Gypsum
Panels
– 3-5/8" 20-gauge steel studs 16" o.c.
– 3" Thermafiber® SAFB™
– Face layer joints taped
• Alternate design two layers 1/2" USG Sheetrock® Brand
Firecode® C gypsum panels, one side
U443 56 SA-851016
Based on alternate
design
58 SA-851028
One-Hour Fire-Rated Construction Chase Walls, Steel Framed Acoustical Performance
Construction Detail Description Test Number STC Test Number
51⁄4"
• Face layer 1/2" USG Durock® Brand cement board
• Base layer 5/8" USG Sheetrock® Brand Firecode® gypsum
panels or sheathing, or USG Fiberock® panels
– 3-1/2" 20-gauge structural studs 16" o.c.
– 3" mineral wool batt
• 5/8" USG Sheetrock® Brand Firecode® Gypsum Panels opposite side
UL Des U473
One-Hour Fire-Rated Construction Load-Bearing, Wood Framed Acoustical Performance
Construction Detail Description Test Number STC Test Number
5"
• 1/2" USG Durock® Brand cement board and 1/4" ceramic tile
– 2 x 4 wood studs 16" o.c.
– 3-1/2" Thermafiber® SAFB™
– Joints taped
• Alternate design 5/8" USG Sheetrock® Brand Firecode® gypsum
panels, one side
UL Des U329 37 USG-840404
40 USG-830314
51⁄8"
• 1/2" USG Durock® Brand cement board
– Base layer 15/32" plywood
– 2 x 4 wood studs 16" o.c.
– 3" Thermafiber® SAFB™
– Joints taped and treated
• 5/8" USG Sheetrock® Brand Firecode® gypsum panels, other
side
U303
Two-Hour Fire-Rated Construction Chase Walls, Steel Framed Acoustical Performance
Construction Detail Description Test Number STC Test Number
9"
• 1/2" USG Durock® Brand cement board and 1/4" ceramic tile
– Two rows 2 x 4 wood studs 16" o.c. on 2 x 8 common plate
– 3-1/2" Thermafiber® SAFB™ both cavities
– Joints taped
– Load-bearing up to 50% allowable design load
WHI-495-0505
0508
50 SA-840523
ROOF/CEILINGS One-Hour Fire-Rated Construction Steel Truss Acoustical Performance
Construction Detail Description Test Number STC Test Number
• 5/8" USG Sheetrock® Brand Firecode® gypsum panels
– RC-1 channels or equivalent
– Joints finished
– Steel roof deck
– Steel truss 48" o.c.
• Roof covering and roof insulation over 1/2" USG Durock® Brand
cement board or 1/2" USG Sheetrock® Brand gypsum panels
UL Des P521,
P525, 527, 529
USG Durock® Brand Cement Board Systems | 4