Fire-Resistant Assemblies - USG Corporation

A
Partitions
Steel Framed
1 Hour Fire-Rated Construction Non-Loadbearing Acoustical Performance Reference
Construction Detail Description Test Number STC Test Number Index
wt. 6 • veneer plaster only (not drywall) 1/2" imperial GA-WP-1240 45 CK-664-1
Based on 3-5/8" studs 24" o.c.
with 1" mineral wool batt in cavity
A-3
3 5 ⁄8"
brand Firecode C Core gypsum base and veneer
finish or 5/8" Fiberock panels
– 2-1/2" 25 gauge steel studs, 16" o.c.
– joints staggered and taped
– 1/16" veneer finish
wt. 5 • 1/2" Sheetrock Firecode C Core gypsum panels UL Des U419 A-4
3 1 ⁄2"
– 2-1/2" 25 gauge studs 24" o.c. or U448
– 1-1/2" thermaFiber SAFB
– joints finished
wt. 6 • 5/8" Sheetrock Firecode Core gypsum panels CEG 8-11-83 A-5
3 3 ⁄4"
– 2-1/2" 25 gauge steel studs 24" o.c.
– 1-1/2" mineral wool batt
– horiz joints directly opposite and finished
– CEG 8-11-83 rating also applies to assembly
with 1/2" Sheetrock Firecode C Core
gypsum panels, panels and joints finished
– CEG 5-9-84 rating also applies with imperial
Firecode Core gypsum base and veneer finish
surface
• 5/8" Sheetrock Firecode Core gypsum UL Des U423 A-6
panels
– 3-5/8" 25 gauge steel studs 24”OC
– joints finished
– optional insulation
– optional plywood or OSB for shear purposes
wt. 7 • Face layer 1/2" Sheetrock Firecode C Core GA-WP-1090 A-7
3 1 ⁄8"
gypsum panels
– 1-5/8" 25 gauge steel studs 24" o.c.
• base layer 1/4" Sheetrock gypsum panels
– joints finished
10 USG Fire-Resistant Assemblies
CEG 5-9-84
47 SA-831001
41 RAL-TL-69-148
Based on same construction
without thermaFiber SAFB
45 RAL-TL-69-42
48 SA-800422
Based on 3-5/8" studs and 2" mineral
wool batt
53 CK-684-13
Based on 1-1/2" mineral wool batt
and 2-1/2" studs