A.1∶0.35~1∶0.50B.1∶0.50~1∶0.75C.1∶0.75~1∶1.00D.1∶1.00~1∶1.25
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
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=()
单项选择题梁高1.8m,当采用曲线张拉时,后张法预应力钢丝束、钢绞线计算长度按直线长度乘以系数()
A.1.015 B.1.025 C.1.02 D.1.035