ASTM D6841经阻燃处理木材设计值处理调整因素的计算规程
日期:2012-02-08 11:06
cts of their treatment on lumber used in normal and elevated temperature service conditions.
The effect of fire-retardant treatments on the strength of lumber used in roof framing applications is time related. In this practice, the cumulative effect on strength of annual thermal loads from all temperature bins is increased 50 times to establish treatment adjustment factors for fire-retardant treated lumber roof framing.
The procedures of Test Method D 5664 employ an elevated temperature intended
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