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
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 to pr
2/11 下一页 上一页 首页 尾页
返回
刷新
WAP首页
网页?/a>
登录
08/30 01:12