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一、内天沟排水屋面备用排水管不可少 由于受造型、建筑、结构等诸多因素的影响,很多建筑设计成内天沟排水。设计人员在施工图中虽注明防水构造要求,水落管套用标准图作法等,但一般均忽视了在内天沟排水的外墙上再设置备用排水管。这是因为内天沟排水屋面均设置了一定高度的泛水墙或女儿墙,若落水管堵塞、遇大雨,屋面集水排不出,雨水高度
First, the inner drain drainage roof drainage pipe is indispensable As a result of modeling, construction, structure and many other factors, many buildings are designed to drain inside the gutter. In the construction drawings, although the designer stated the requirements of the waterproof structure, and the downspouts use the standard map, etc., the spare drain pipes are usually neglected on the outer wall of the inner gutter drain. This is because the drainage wall of the inner gutter is provided with a certain height of the floating wall or the parapet wall. If the falling water pipe is blocked and heavy rain is encountered, the roof water cannot be drained and the rain height is high.