施工时及施工后，应采取有效措施防止雨水冲刷及烈日暴晒，并应及时做保护层。
During construction and after construction, effective measures should be taken to prevent rain washing and sun exposure, and protective layer should be made in time.
建筑物基础保护层开挖一直是困扰水利水电施工的难题之一。
Protection layer excavation in foundation of structure is always one of difficult problems perplexing construction in water conservancy project.
厨房、卫生间：施工至防水保护层，预留各种管线接口。
Kitchen and toilet: Construct up to the waterproof protective layer, preserve pipeline interfaces.
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