Demystifying fire-retardant treated wood specifications
Construction Specifier
NOVEMBER 27, 2021
ft) flame under controlled conditions of draft and temperature onto the surface of a 7.4-m million-sf) panelized roof system using interior FRT lumber and plywood in Phoenix, Arizona. Fire performance is evaluated using UL 723, Standard for Test for Surface Burning Characteristics of Building Materials. The test consists of a 7.6-m
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