ASTM D6841耐火处理木材设计参数调节系数计算惯例
日期:2012-02-08 10:10
ASTM D6841 Standard Practice for Calculating Design Value Treatment Adjustment Factors for Fire-Retardant-Treated Lumber
ASTM D6841耐火处理木材设计参数调节系数计算惯例
Fire-retardant-treatments are used to reduce the flame-spread characteristics of wood. Chemicals and redrying conditions employed in treatments are known to modify the strength properties of the wood product being treated. This practice gives procedures for fire-retardant chemical manufacturers to use to calculate the effects of
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