发布时间:2025-01-18 00:47:40
都用325的,也就是袋上标P.O32.5或P.C32.5的,425的修桥预应力的梁才用,可以用不过太浪费了也没必要啊。
二十多层的高层住宅基础下面有桩基础桩上面不设计筏板基础全设计条形基础可以吗
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