A . 0.4m×0.4m,0.1%
B . 0.5m×0.5m,0.1%
C . 0.4m×0.4m,0.2%
D . 0.5m×0.5m,0.2%
[单选题]一般施工现场排水沟的横断面和纵向坡度不宜小于()。A.0.4m×0.4m,0.1%B.0.5m×0.5m,0.1%C.0.4m×0.4m,0.2%D.
[单选题]一般施工现场排水沟的横断面和纵向坡度不宜小于()。A.0.4m×0.4m,0.1%B.0.5m×0.5m,0.1%C.0.4m×0.4m,0.2%D.
[填空题] 集水井降水法中排水沟横断面不小于(),纵向坡度宜为()。
[判断题] 一般排水沟的横断面不小于0.5m×0.5m,纵向坡度一般不小于0.2%。平坦地区,如出水困难,其纵向坡度可减至0.1%。A . 正确B . 错误
[判断题]在集水井降水法中,沿坑底周围或中央需要开挖排水沟,一般排水沟的横断面不小于0.5mx0.5m,纵向坡度一般不小于3‰。A.对B.错
[判断题]主排水沟最好设置在施工区域的边缘或道路的两旁,一般排水沟的横断面不应小于0.5m×0.5m,纵向坡度不应小于2‰。A.对B.错
[判断题]在集水井降水法中,沿坑底周围或中央需要开挖排水沟,一般排水沟的横断面不小于0.5m×0.5m,纵向坡度一般不小于3‰。()A.对B.错
[问答题] 排水沟横断面设计任务
[多选题] 排水沟横断面设计主要参数有哪些()A . 沟底比降IB . 沟道糙率nC . 边坡系数mD . 不冲不於流速E . 底宽b
[判断题]主排水沟最好设置在施工区域的边缘或道路的两旁,一般排水沟的横断面不应小于0.5m×0.5m,纵坡不应小于2‰。A.对B.错