Demystifying fire-retardant treated wood specifications
Construction Specifier
NOVEMBER 27, 2021
The codes require FRTW to be tested for an additional 20-minute period, meaning the FRTW is challenged by fire for a total of 30 minutes: • During the first 10 minutes of the extended test, the distance of flame travel and rate at which the flame front advances are used to calculate the flame spread index (FSI). Type I: 111,484-m2 (1.2
Let's personalize your content