Fire-resistance rating

Also called: fire rating · hourly rating

The length of time, expressed in hours, that a building assembly is required to withstand fire exposure, established through standardized testing. Ratings apply to walls, floors, doors, and structural elements, driven by occupancy, construction type, and required separations.

Broader: Building code

Depends on: Occupancy classification

Architects

Why it matters

Ratings are a good example of data the BIM model can carry natively: a wall type knows its rating, a door knows the rating of the wall it sits in. When that data is structured, checking separation requirements stops being a sheet-by-sheet reading exercise.

Also in Fundamentals: Building code IBC (International Building Code) ICC (International Code Council) AHJ (Authority Having Jurisdiction) Jurisdiction Local amendments Occupancy classification Egress (means of egress)

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