发布时间:2025-01-29 23:30:41
如果你肯花钱的话,建议预制一根预应力梁比较安全。主筋用32的箍筋12的就够了,绑个双排的笼子。
楼房的避雷针怎么安装如果把避雷针直接接到房子的钢筋上钢筋是接到地下15米这样可以吗
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