Reference:
UL Design N502
Exterior Wall Fire-Rated System
2-Hour
Fire-Resistance Rating
Steel Beam
Attach channels to steel deck with
1/2" (12.7
mm) Phillips pan head screws spaced 12" (300 mm)
o.c. Fabricate channel brackets by cutting notches
in channel at location of corners and fold channel
to form U-bracket of the required size. A minimum 1/2" (12.7
mm) clearance is required at sides and bottom of the
beam. Attach channel to angle 24" (600
mm) o.c., with 1/2" (12.7 mm) Phillips pan head
screws. Place steel corner angle at lower corners of
U-brackets.
Apply a base layer of 5/8" (15.9 mm) GlasRoc®
pan head screws spaced 16" (400 mm) o.c. Apply
a face layer of 5/8" (15.9 mm) GlasRoc® Sheathing
Type X with 1-3/4" (44 mm) Phillips pan head screws
spaced 6" (150 mm) o.c. Joints must be offset
from the joints in the underlaying layer. Attach corner
bead to corners. 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
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