Fire Resistance Ratings: door_assembly
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 | UL design number | assembly description | assembly type | construction material | fire rating hr (hr) | key materials | notes |
|---|---|---|---|---|---|---|---|---|
| door_assembly | door_20min | NFPA 80 | Fire Door — 20-Minute Rating | door | various | 0.33 | solid_core_wood_or_hollow_metal | Corridor-to-room doors in 1-hour fire partitions; smoke and draft control only; per IBC Sec. 716.2.6.1 |
| door_assembly | door_45min | NFPA 80 | Fire Door — 45-Minute Rating | door | various | 0.75 | solid_core_wood_or_hollow_metal_tested_NFPA80 | For 1-hour fire barriers where 45-minute opening protection required; also elevator lobby doors |
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