Reference:
UL Design U425
(Load-Bearing 80% of Design)
Exterior Wall Fire-Rated System
2-Hour
Fire-Resistance Rating
Cavity thickness.............3-1/2" (89
mm)
Wall thickness.....................6" (150 mm)
Weight..........................11 psf (54 kg/m2)
Interior
Install insulation between
studs. Apply one layer of 5/8" (15.9 mm) ProRoc® Type
X gypsum board vertically to interior side
with 1" (25
mm) Type S-12 steel screws spaced 12" (300 mm)
o.c. along edges and in the field. Joints must be offset
from
joints on the opposite
side.
Apply a face layer of 5/8" (15.9
mm) ProRoc® Type
X gypsum board vertically with 1-5/8" (41 mm)
Type S-12 steel screws spaced 12" (300 mm) o.c.
along edges and in the field. Joints must be offset
from joints in the underlying layer. Tape and finish joints.
Exterior
Apply one layer of 5/8" (15.9
mm) ProRoc® Type
X gypsum board vertically to exterior side
with 1" (25
mm) Type S-12 steel screws spaced 12" (300 mm)
o.c. along edges and in the field. Joints must be offset
from
joints on the opposite side.
Apply a face layer of 5/8" (15.9
mm) GlasRoc® Sheathing Type X vertically with 1-5/8" (41
mm) Type S-12 steel screws spaced 12" (300 mm)
o.c. along edges and in the field. Joints must be offset
from joints in the underlying layer.
Additional UL Design
Listings for Steel Stud Systems:
U017, U418, U420, U421, U422, U434, U442, U450, U460, U466, U467, U472, U473, U475, U487, U494, U501, U502, U504, U505, U506, U510, U512, U603, U615, U617, U622, U623, U626, U640, V417 and V419. |
