Reference: UL Design X528 Exterior Wall Fire-Rated System
2-Hour Fire-Resistance Rating
STEEL COLUMNS Position steel studs at column corners. Steel studs to be 12.7 mm (1/2") less than assembly height.
Apply a base layer of 15.9 mm (5/8") GlasRoc® Sheathing Type X vertically with 25 mm (1") Phillips pan head screws spaced 600 mm (24") o.c. Apply a face layer of 15.9 mm (5/8") GlasRoc® Sheathing Type X vertically around the perimeter with 44 mm (1-3/4") Phillips pan head screws spaced 300 mm (12") o.c. Apply corner bead with 41 mm (1-5/8") screws spaced 300 mm (12") o.c. Tape and finish joints.
Additional UL Design Listings for Beam & Column Systems Beam Protection: N501 and N505
Column Protection: X508, X516, X517, X525 and X526
