2001 ASD Supplements - unprotected PDF - American Wood Council

ASD STRUCTURAL LUMBER SUPPLEMENTL-39Figure 6.10 One-Hour Fire-Rated Wood Floor/Ceiling Assembly(2x10 Wood Joists 16” o.c. – Gypsum on Resilient Channels)61. 1-1/2 in. lightweight concrete or min. ¾ in. proprietarygypsum concrete floor topping. Building papermay be optional and is not shown.2. 15/32 in. plywood subfloor (subfloors for certain designsmay be nom. 7/16 in. OSB) or Nom. 19/32 in.T&G plywood underlayment (single floor). OrientedStrand Board (OSB) panels are permitted for certaindesigns.Fire Tests:UL R1319-65, 11-16-64, Design L514 5/8 in. Type XgypsumUL R6352, 4-21-71, Design L502 ½ in. proprietaryType X gypsumOTHER CONSIDERATIONS3. 2x10 wood joists spaced 16 in. o.c.4. 5/8 in. Type X Gypsum Wallboard or ½ in. proprietaryType X gypsum wallboard ceiling attached toresilient channels.AMERICAN FOREST & PAPER ASSOCIATION