Fire-resistance rating

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Fire-resistance rating

Refers to the time in hours that a material or construction will withstand exposure to fire.

fire-resistance rating

The time in hours that a material or construction can withstand fire exposure, as determined in conformity with generally accepted standards, or from information derived from standard tests.
References in periodicals archive ?
In addition, exit doors should be at all times operational and if they are interior exit doors, should not have any damage that compromises its fire-resistance rating.
Finally, the stone ballast is laid to prevent wind displacement and to provide a Class A fire-resistance rating.