2x6 Wood Studs Insulated Symmetrical Gypsum

WS6-1.2 One-Hour Fire-Resistive Wood Wall Assembly
2x6 Wood Stud Wall - 100% Design Load - ASTM E 119 / NFPA 251

1. 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 application of wallboard represents the direction of least fire resistance as opposed to vertical application.
3. Insulation - 5-1/2 in. thick mineral wool insulation (2.5 pcf, nominal)
4. Fasteners - 2-1/4 in. Type S drywall screws, spaced 12 in. o.c.
5. Joints and Fastener Heads - Wallboard joints covered with paper tape and joint compound, fastener heads covered with joint compound

Tests conducted at the Fire Test Laboratory of National Gypsum Research Center
Test No:WP-1231 (Fire Endurance) September 14, 1999
WP-1230 (Hose Stream) August 30, 1999

Third Party Witness: Intertek Testing Services
Report J99-22441.1

This assembly was tested at 100% design load, calculated in accordance with the 1997 National Design Specification® for Wood Construction. The authority having jurisdiction should be consulted to assure acceptance of this report.