Fire Resistance Ratings: column_concrete_encased
Fire resistance ratings for building assemblies per UL/ASTM E119 — IBC Table 601 construction-type requirements (Types IA through VB), CMU wall equivalent-thickness ratings by aggregate type, gypsum board on steel/wood stud assemblies, concrete slab and wall thicknesses, composite steel deck/concrete floors, spray-applied fireproofing (SFRM) for columns and beams by W/D ratio, concrete-encased column ratings, and fire door assembly ratings (20-minute through 3-hour). Sources: IBC 2021 Table 601, ACI 216.1-14, UL Fire Resistance Directory, GA-600-2021, NFPA 80-2022, ASTM E119.
| assembly category | record id | assembly description | assembly type | construction material | fire rating hr (hr) | key materials | notes |
|---|---|---|---|---|---|---|---|
| column_concrete_encased | column_concrete_1hr | Concrete-Encased Steel Column — 1 Hour | column | concrete_encased_steel | 1 | W-shape_steel, concrete_encasement, rebar | Minimum 1-in cover over steel; concrete encasement with 4000 psi normalweight concrete |
| column_concrete_encased | column_concrete_2hr | Concrete-Encased Steel Column — 2 Hour | column | concrete_encased_steel | 2 | W-shape_steel, concrete_encasement, rebar | Minimum 2-in cover to closest tie; see ACI 216.1 for concrete aggregate type corrections |
| column_concrete_encased | column_concrete_3hr | Concrete-Encased Steel Column — 3 Hour | column | concrete_encased_steel | 3 | W-shape_steel, concrete_encasement_min_2.5in_cover | Minimum 2.5-in concrete cover |
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