Fire-Resistant Assemblies SA-100 - CGC

B
Floor/Ceilings
Steel Framed
3 Hour Fire-rated Construction Steel Bar Joist Framing (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, clg. wt. 4 • 15.9 mm (5/8�)SHEETROCK FIRECODE C Core ULC Des G512 SA920 B-32
Gypsum Panels or UL Des G512
406 mm
(16")
– metal fur channel 610 mm (24�) o.c.
– joints finished
– 64 mm (2-1/2�) concrete on corrugated steel deck
or riblath
– steel bar joists, 610 mm (24�) o.c.
• optional veneer plaster
clg. wt. 3 • CGC DGL Drywall Suspension System UL Des G529 SC2000 B-33
• 12.7 mm (1/2�) or 15.9 mm (5/8�)SHEETROCK
FIRECODE C Core Gypsum Panels
540 mm
(21 1 ⁄4")
624 mm
(24 9 ⁄16")
min.
584 mm
(23")
543 mm
(21 3 ⁄8")
572 mm
(22 1 ⁄2")
– joints finished
– 81 mm (3-1/4�) concrete on riblath or corrugated
steel deck
– steel bar joists, 610 mm (24�) o.c.
• 15.9 mm (5/8�) or 19.1 mm (3/4�) FR-83 or FR-X1 UL Des G205 DXLA, DXLZA or SDXLA Susp Exp Grid SC2000 B-34
or 12.7 mm (1/2�) or 15.9 mm (5/8�) FR-4 or 12.7 mm
(1/2�) FC-CB or Astro-FR acoustical ceiling panels
• DXL, DXLZ, or SDXL Susp Exp Grid System
– light fixture and air duct optional
– 89 mm (3-1/2�) concrete deck on riblath
– steel bar joists, 1200 mm (4�) o.c.
• 15.9 mm (5/8�) or 19.1 mm (3/4�) FR-83 or 19.1 mm (3/4�) UL Des G211 DXLA, DXLZA, SDXLA or ZXLA Susp Exp SC2000 B-35
FR-X1, Astro-FR or FR-4 acoustical ceiling panels
Grid Syst may be used instead, but fire
• DXL, DXLA, DXLZ, DXLZA, SDXL, SDXLA or
rating is limited to 2-hr.; 12.7 mm (1/2�)
ZXLA Susp Exp Grid System
FC-CB gypsum panels may be used as a
– light fixture and air duct optional
– 75 mm (3�) concrete deck used instead, but fire rating
is limited to 2-hr.; 13 mm (1/2�) on riblath
– steel bar joists, 610 mm (24�) o.c.
ceiling panel for fire rating of 1-hr.
• 15.9 mm (5/8�) FR-81; 15.9 mm (5/8�) or UL Des G213 When FR-4 or M clg panels are used, the fire SC2000 B-36
19.1 mm (3/4�) FR-83; 19.1 mm (3/4�) FR-X1; or
rating is limited to 2-hr.; 12.7 mm (1/2�)
12.7 mm (1/2�) FC-CB; or 15.9 mm (5/8�) FR-4; or
FC-CB gypsum panels may be used as a
19.1 mm (3/4�) Astro-FR acoustical ceiling panels
• DXL, DXLZ or SDXL Susp Exp Grid System
– light fixture and air duct optional
– 89 mm (3-1/2�) concrete deck on riblath or steel deck
(increase concrete 13 mm (1/2�))
– steel bar joists, 610 mm (24�) o.c.
ceiling panel for fire ratings of 1- or 1-1/2-hr.
31 CGC Fire-Resistant Assemblies
Syst may be used instead, but fire rating
is limited to 2-hr.; DXLT, DXLTA, DXLTZ
or DXLTZA Susp Exp Grid Syst may be
also used, but fire rating is limited to
1-1/2-hr.; 12.7 mm (1/2�) FC-CB gypsum
panels may be used as a ceiling panel for
fire ratings of 1 or 1-1/2-hr.