发布时间:2025-02-01 06:49:23
C40的立方体抗压强度标准值(在标准养护条件下养护达到28D龄期,用标准方法测得的极限抗压强度)为40MPa.
请问在设计图中电梯井背面的墙体是设计的后砌砖墙而不是剪力墙这样的设计合理吗
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