Well, you have to use double Angle formulas.
这里需要用到二倍角公式。
Using approximate section properties, practical formulas are derived for single and double angle sections.
利用截面特性的近似值得出单角钢和双角钢构件的实用计算公式。
Using approximate section properties, practical formulas are derived for single and double angle sections.
利用截面特性的近似值得出单角钢和双角钢构件的实用计算公式。
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