IBC Design 721.1(2) 11-1.1
1-Hour Fire Rated Noncombustible studs—interior partition with plaster each side — 3-1/4" x 0.044" (No. 18 carbon sheet steel gage) steel studs spaced…
IBC Table 721.1(2), Item 11-1.1 (Noncombustible studs—interior partition with plaster each side): 3-1/4" x 0.044" (No. 18 carbon sheet steel gage) steel studs spaced 24" on center. 5/8" gypsum plaster on metal lath each side mixed 1:2 by weight, gypsum to sand aggregate. Minimum finished thickness (face-to-face) — 1-hr: 4-3/4 (d)". Prescriptive assembly from the adopted building code — thicknesses are code minimums, see table footnotes for conditions.
3-1/4" x 0.044" (No. 18 carbon sheet steel gage) steel studs spaced 24" on center. 5/8" gypsum plaster on metal lath each side mixed 1:2 by weight, gypsum to sand aggregate.
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- Layer-by-layer components with thicknesses
- Cross-section diagram
- Applicable code sections and test standard
- 6 related assemblies