The following issues should be paid attention to in the use of siphon rainwater drainage system. First of all, the control of the water depth in front of the bucket. The water depth in front of the bucket is too small to effectively form the siphon full pipe flow, the system cannot operate under the siphon condition, and the drainage capacity cannot reach the required state. The water depth in front of the bucket is too large, which will add load to the roof and bring risks to the safety of the layout. The bearing capacity of the siphon rainwater bucket is especially for the roof with light steel structure, and its bearing capacity needs to be checked by the layout engineer and improved accordingly, and for this kind of roof, the gutter and the roof cannot be completely sealed, and the water depth in front of the bucket is too high, so that rainwater can pass through it. The gap leaked into the room. It is necessary to pay attention to the description, reasonably control the depth of the gutter, the depth of the water in front of the bucket and the bearing capacity of the roof and gutter, and set up the necessary overflow system to avoid the risk of excessive accumulation of water.
