Reference: UL Design L501 Exterior Wall Fire-Rated System
1-Hour Fire-Resistance Rating Thickness............279 mm (11")
Weight..................66 kg/m2 (13.5 psf)
Framing Set joists 400 mm (16") o.c. Cross-brace and firestop, as required.
Flooring Apply subflooring with face grain perpendicular to joist with joints staggered. Finished flooring wood structural grade T&G Douglas Fir plywood with face grain perpendicular to joists with joints staggered.
Apply one layer of 15.9 mm (5/8") GlasRoc® Sheathing Type X with the long dimension perpendicular to joists with 48 mm (1 7/8") nails spaced 150 mm (6") o.c. Finish and tape joints.
