Design of Drainage System and Drainage Pipe for Multi-span Glass Greenhouse

Multi-span greenhouses are designed to connect individual greenhouses. So what factors need to be considered for the drainage of multi-span greenhouses, and how are the drainage pipes of the multi-span greenhouses arranged?

First, Design of drainage system for multi-span greenhouse

The drainage system of the multi-span greenhouse relies on a gutter to connect the rainwater on both sides of the roof. The rainwater is collected into the downspout through the gutter, and the rainwater from the downspout is connected to the ditch. The design of the drainage system should take into account the slope, the current more common slope ratio is five thousandths. Generally, a greenhouse with a greenhouse spacing within 60 meters considers drainage from both sides, that is, drainage from the middle to both sides. If the bay distance exceeds 60 meters, an internal drainage system needs to be added. In this case, it is necessary to make holes in the gutter in advance. The hole size is generally 100mm and the downpipe is 110mm.

Second, the installation method of the multi-span greenhouse drainage pipe

Here is the installation method of the multi-span greenhouse downspout is the drainage pipe at the wall position. The installation method of drainage pipe is generally divided into external drainage arrangement and internal drainage arrangement. 1. External drainage arrangement

That is, add a day ditch end at the end of the gutter. The length of the gutter end is generally about 400mm. There is a 100mm-long downspout head at the bottom of the end to connect with the downspout. External drainage is one of the most common drainage methods and is easy to install.

2. Layout of internal drainage pipe

That is to say, the drainage pipe is installed inside the facade glass. The installation of the internal drainage pipe needs to be drilled at the end of the gutter in advance. The installation is complicated. If there is a longitudinal truss beam, many turns are required. The advantage of internal drainage in the northeastern region is that the drainage pipe is inside the greenhouse, and it is not easy to freeze inside and freeze the drainage pipe during drainage.