IBC Design 721.1(2) 7-1.1
2-Hour Fire Rated Solid perlite and Portland cement — Perlite mixed in the ratio of 3 cubic feet to 100 pounds of Portland…
IBC Table 721.1(2), Item 7-1.1 (Solid perlite and Portland cement): Perlite mixed in the ratio of 3 cubic feet to 100 pounds of Portland cement and machine applied to stud side of 1-1/2" mesh by 0.058-inch (No. 17 B.W. gage) paper-backed woven wire fabric lath wire-tied to 4"-deep steel trussed wire (j) studs 16" on center. Wire ties of 0.049" (No. 18 B.W. gage) galvanized steel wire 6" on center vertically. Minimum finished thickness (face-to-face) — 2-hr: 3-1/8 (d)". Prescriptive assembly from the adopted building code — thicknesses are code minimums, see table footnotes for conditions.
Perlite mixed in the ratio of 3 cubic feet to 100 pounds of Portland cement and machine applied to stud side of 1-1/2" mesh by 0.058-inch (No. 17 B.W. gage) paper-backed woven wire fabric lath wire-tied to 4"-deep steel trussed wire (j) studs 16" on center. Wire ties of 0.049" (No. 18 B.W. gage)…
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