2001 ASD Supplements - unprotected PDF - American Wood Council

ASD STRUCTURAL LUMBER SUPPLEMENTL-31Figure 6.2One-Hour Fire-Rated Wood Wall Assembly (WS6-1.1)(2x6 Wood Stud Wall without Insulation: 100% Design Load – Gypsum Both Sides)61. Framing: Nominal 2x6 wood studs, spaced 16 in. o.c.,double top plates, single bottom plate.2. Sheathing: 5/8 in. Type X gypsum wallboard, 4 ft.wide, applied horizontally, unblocked. Horizontal applicationof wallboard represents the direction of leastfire resistance as opposed to vertical application.3. Fasteners: 2-1/4 in. Type S drywall screws, spaced 7in. o.c.Tests conducted at the Fire Test Laboratory of NationalGypsum Research CenterTest No: WP-1232 (Fire Endurance), September 16,1999WP-1234 (Hose Stream), September 27, 1999Third Party Witness: Intertek Testing ServicesReport J99-22441.2OTHER CONSIDERATIONS4. Joints and Fastener Heads: Wallboard joints coveredwith paper tape and joint compound, fastenerheads covered with joint compound.This assembly was tested at 100% design load, calculatedin accordance with the National DesignSpecification for Wood Construction. The authorityhaving jurisdiction should be consulted to assureacceptance of this report.AMERICAN FOREST & PAPER ASSOCIATION