GA Design FC 5406
1-Hour Fire Rated Wood Joist Floor-Ceiling — two-layer 5/8" Type X ceiling (GA)
GA File FC 5406 — 1-hour wood-framed floor-ceiling per National Gypsum literature. Nominal 2x10 wood joists (or trusses) at 24" o.c. with 1/2" plywood floor; ceiling is a two-layer membrane of 5/8" Type X gypsum board (base at 24" o.c., face at 12" o.c., joints staggered). Cross-listed with FM FC-172 and GA RC 2601/2602 (membrane protection). Verify against the current GA-600 edition before specifying.
2x10 joists @ 24" o.c., 1/2" plywood floor, two layers 5/8" Type X ceiling
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- Layer-by-layer components with thicknesses
- Cross-section diagram
- Applicable code sections and test standard
- 6 related assemblies