Fire-Resistant Assemblies SA-100 - CGC

C
Roof/Ceilings
Steel Framed
1 Hour Fire-rated Construction Steel Truss (Refer to ULC/UL Design Directory listings for loading conditions. See page 6.) Acoustical Performance Reference
Construction Detail Description Test Number STC Test Number ARL Index
clg. wt. 3 • 15.9 mm (5/8�) SHEETROCK FIRECODE C UL Des P524 C-24
Core Gypsum Panels
– Resilient channels
– joints finished
– insulation optional in concealed space directly
over gypsum ceiling membrane
– roof covering and roof insulation
– steel roof deck
– minimum 302 mm (11-7/8�) deep steel roof
truss 1200 mm (48�) o.c.
clg. wt. 3 • 15.9 mm (5/8�) SHEETROCK FIRECODE C UL Des P521, C-25
Core Gypsum Panels P525, P527, P529
– Resilient channels
– joints finished
– steel roof deck
– steel truss 1200 mm (48�) o.c.
• roof covering and roof insulation over 13 mm (1/2�)
DUROCK Cement Board or 12.7 mm (1/2�)
SHEETROCK Gypsum Panels
clg. wt. 3 • 15.9 mm (5/8�) SHEETROCK FIRECODE C UL Des P523, C-26
Core Gypsum Panels P526, P528, P530
– Resilient channels
– joints finished
– insulation optional in concealed space directly
over gypsum ceiling membrane
– 18 mm (23/32�) thick plywood decking
– steel truss 1200 mm (48�) o.c.
clg. wt. 3 • 15.9 mm (5/8�) SHEETROCK FIRECODE C UL Des P522 C-27
Core Gypsum Panels
– 13 mm (1/2�) plywood sheathing
– pitched or parallel chord wood trusses, 610 mm (24�) o.c.
– air duct
– ceiling damper
– optional insulation
– Resilient channel, 400 mm (16�) o.c.
without insulation, 300 mm (12�) o.c. with insulation
• optional CGC DGL Drywall Suspension System
– joints finished
49 CGC Fire-Resistant Assemblies