混凝土基础底面要平整夯实，基础底部不能作成锅底状。
The concrete foundation bottom surface should be smooth solid, not into the pot bottom.
料仓的底面应该是混凝土或者其它批准的材料，具有足够的斜度，以保证骨料在用于浇筑之前能足够地排水。
The floors of the bins shall be of concrete or other approved material having sufficient slope to ensure adequate drainage of aggregates before being used for concreting.
应用推荐