scope:

This standard prescribes standardized fire and hose stream test procedures that apply to fire window assemblies, including window, glass block, and other light-transmitting assemblies intended for use in window openings to retard the spread of fire through such openings in fire-resistive walls.

Purpose.

The purpose of this standard is to prescribe specific fire and hose stream test procedures for fire window assemblies in order to standardize a method for determining the degree of fire protection provided by such assemblies in retarding the spread of fire (flame, heat, and hot gases) through window openings in fire-resistive walls. The degree of fire protection measured in units of time is not an absolute value, since all possible actual fire scenarios are not represented by the standard fire exposure described herein. This standard allows different fire window assemblies to be compared with each other to evaluate their relative performance as measured against a standard fire exposure.