A.1,0.5m,0.5~1.0m B.1,0.5m,0.8~1.5m C.2,0.5m,0.5~1.0m D.2,1m,0.8~1.5m
单项选择题建筑物、构筑物的基础沉降观测点,应埋设于(),在浇灌底板前和基础浇灌完毕后,应至少各观测1次。
A.基础垫层下 B.基础底板下 C.基础底板上 D.基础顶面