Fire-Resistant Assemblies SA-100 - CGC

B
Floor/Ceilings
Structural Concrete
1-1/2 Hour Fire-rated Construction (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
416 mm
(16 3 ⁄8")
2 Hour Fire-rated Construction
• 15.9 mm (5/8�) FR-4, M or FR-81; 15.9 mm (5/8�) UL Des D209 SC2000 B-75
or 19.1 mm (3/4�) FR-83; or 19.1 mm (3/4�)
FR-X1 acoust ceiling panels or 12.7 mm (1/2�)
FC-CB gypsum lay-in tile
• DXL, DXLA, DXLZ, DXLZA, SDXL, SDXLA or
ZXLA Susp Exp Grid System
– light fixture and speakers optional
– 64 mm (2-1/2�) concrete on fluted or cellular steel deck
clg. wt. 3 • 15.9 mm (5/8�)SHEETROCK FIRECODE C UL Des J502, SA305 B-76
Core Gypsum Panels J503
241 mm
(9 1 ⁄2")
216 mm
(8 1 ⁄2")
222 mm
(8 3 ⁄4")
– metal furring channel 610 mm (24�) o.c.
– joints finished
– 50 mm (2�) precast normal weight (J502) or
lightweight (UL Des J503) concrete units with
150 mm (6�) deep stems 1200 mm (48�) o.c.
• CGC DGL Drywall Suspension System
(UL Des J502)
• 12.7 mm (1/2�)LEVELROCK Floor Underlayment UL Des J991 SA305 B-77
• optional SRM-25 or SRB sound mat
– 200 mm (8�) minimum thick normal weight precast
concrete units
• 12.7 mm (1/2�)LEVELROCK Floor Underlayment UL Des J994 SA305 B-78
– 200 mm (8�) minimum thick light weight precast
concrete units
clg. wt. 3 • 15.9 mm (5/8�)SHEETROCK FIRECODE Core GA-FC-2120 SA305 B-79
Gypsum Panels
– metal furring channel 610 mm (24�) o.c.
– joints finished
– joist leg 250 mm (10�) deep
356 mm
(14")
619 mm
(24 3 ⁄8")
• 19.1 mm (3/4�) FR-83 acoust ceiling panels UL Des D215 SC2000 B-80
• DXL, DXLZ or SDXL Susp Exp Grid System
– light fixture and air duct optional
– 64 mm (2-1/2�) concrete deck deck on fluted or
cellular steel floor
41 CGC Fire-Resistant Assemblies