IBC Design 721.1(2) 4-1.1

4-Hour Fire Rated Solid concrete (h, i) — Sand-lightweight concrete.

IBC Table 721.1(2), Item 4-1.1 (Solid concrete (h, i)): Sand-lightweight concrete. Minimum finished thickness (face-to-face) — 4-hr: 5.4" · 3-hr: 4.6" · 2-hr: 3.8" · 1-hr: 2.7". Prescriptive assembly from the adopted building code — thicknesses are code minimums, see table footnotes for conditions.

Sand-lightweight concrete.

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  • Layer-by-layer components with thicknesses
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