IBC Design 721.1(1) 5-1.1
4-Hour Fire Rated Reinforcing steel in reinforced concrete columns, beams, girders and trusses — Siliceous aggregate concrete, members 12" or larger…
IBC Table 721.1(1), Item 5-1.1 (Reinforcing steel in reinforced concrete columns, beams, girders and trusses): protection by Siliceous aggregate concrete, members 12" or larger, square or round. (Size limit does not apply to beams and girders monolithic with floors.) Minimum insulating material thickness — 4-hr: 2" · 3-hr: 1-1/2" · 2-hr: 1-1/2" · 1-hr: 1-1/2". Prescriptive protection from the adopted building code — see table footnotes for conditions.
Siliceous aggregate concrete, members 12" or larger, square or round. (Size limit does not apply to beams and girders monolithic with floors.)
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- Layer-by-layer components with thicknesses
- Cross-section diagram
- Applicable code sections and test standard
- 6 related assemblies