一般房屋建筑层数超过六层或檐高超过20米时,屋面排水要求做成有组织排水方式,立墙排水水落管的安装应控制正面及侧面均顺直。在正常施工中,往往控制了正面顺直,侧面就不顺直,导致水落管与墙距离大小不等,既不美观,又影 When the average number of floors of a house exceeds six floors or the height of a ditch is more than 20 meters, the drainage of the roof requires an organized drainage method. The installation of the downpipe of the vertical wall shall be controlled so that the front and side are straight. In normal construction, the frontal straightness is often controlled, and the sides are not straight, resulting in a range of distances between the downfall and the wall. This is not only beautiful, but also