IBC Design 721.1(3) 8-1.1
4-Hour Fire Rated Steel joists constructed with a reinforced concrete… — Vermiculite gypsum plaster on metal lath…
IBC Table 721.1(3), Item 8-1.1: Steel joists constructed with a reinforced concrete slab on top poured on a 1/2"-deep steel deck.. Ceiling: Vermiculite gypsum plaster on metal lath attached to 3/4" cold-rolled channels with 0.049" (No. 18 B.W. gage) wire ties spaced 6" on center. Minimum slab thickness — 4-hr: 2-1/2". Minimum ceiling thickness — 4-hr: 3/4". Prescriptive assembly from the adopted building code — see table footnotes for conditions.
Steel joists constructed with a reinforced concrete slab on top poured on a 1/2"-deep steel deck.. Ceiling: Vermiculite gypsum plaster on metal lath attached to 3/4" cold-rolled channels with 0.049" (No. 18 B.W. gage) wire ties spaced 6" on center.
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- Layer-by-layer components with thicknesses
- Cross-section diagram
- Applicable code sections and test standard
- 6 related assemblies