NFPA 257 窗及玻璃隔断的火灾试验方法
日期:2012-02-10 14:39
w assemblies for continued use after fire exposure.
1.1.3 This standard provides a standardized method for comparing the performance of fire window assemblies.
NFPA 257 prescribes 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 openings in fire-resistive walls. It establishes controls of the fire test as well as perform
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