单项选择题
坡高在5m以内的密实碎石土的边坡坡度允许值为()
A.1∶0.35~1∶0.50
B.1∶0.50~1∶0.75
C.1∶0.75~1∶1.00
D.1∶1.00~1∶1.25
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单项选择题
60°弯钩的钢筋弯曲调整值为()
A.0.5d
B.0.85d
C.2d
D.2.5d -
单项选择题
弯起角度为45°时,弯起钢筋净长=()
A.L-2c+2×0.268H′
B.L-2c+2×0.414H′
C.L-2c+2×0.577H′
D.L-2c+2×0.115H′ -
单项选择题
弯起角度为30°时,弯起钢筋净长=()
A.L-2c+2×0.268H′
B.L-2c+2×0.414H′
C.L-2c+2×0.577H′
D.L-2c+2×0.115H′
