小于等于8m梁的底模拆除时,混凝土强度应达到设计混凝土立方体抗压强度的()。
A.70%
B.75%
C.80%
D.100%
参考答案:B
某场地自0~8.0m为软塑黏性土,IL=0.80,c=0.88,γ=19kN/m3,地下水位为5.0m,土层承载力特征值为70kPa,拟采用独立基础,底面尺寸为2m×4m,基础底面埋深2.0m,基底底面处相应于荷载效应标准组合时的平均压力为220kPa,基底下设2.0m厚的粗砂垫层。则垫层下软土层承载力验算结果为()。
A.满足,承载力为136.5kPa
B.不满足,承载力为136.5kPa
C.满足,承载力为146.5kPa
D.不满足,承载力为146.5kPa
During counterflooding to correct a severe list aggravated by an off-center load, your vessel suddenly takes a list or trim to the opposite side. You should().
A.continue counterflooding in the same direction
B.continue counterflooding, but in the opposite direction
C.immediately stop counterflooding
D.deballast from the low side