Slow down erosive changes in soil on slopes;

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prevent damage to the pavement;
avoid road washouts;
prevent the formation of potholes;
protect foundations, basements and lower floors from destruction;
prevent waterlogging and preserve the natural landscape;
preserve the appearance of buildings.
The disadvantages of storm sewers depend on the chinese student data of the drainage system being constructed and the features of all materials used in the construction, including their strength indicators, as well as the guaranteed durability and level of reliability during operation.

When installing storm sewers, different types of structures can be used, which differ in their structure, materials used for production, area of ​​use and maintenance features.


An open (external) stormwater drainage system is a system of water collection channels laid along the roofs of houses with subsequent drainage of rainwater into drainpipes. From the water collection channels, which are laid at the ground surface and covered with gratings, the collected water also enters the drainage system. This type of stormwater drainage is easy to install, but it protects the house and the site from erosion as effectively as possible.


A closed (internal) stormwater system is represented by a whole complex of underground engineering communications, including stormwater inlet wells and a waste retention system. Most often, this part of the elements ends with surface treatment facilities for runoff.

The main purpose of standard closed storm sewers is to clean rainwater from various types of contaminants.


A mixed storm sewer system is a kind of design “tandem” of traditional closed and open systems, therefore, in such a design, all surface trays are responsible for collecting water, and underground pipelines transfer it by gravity to the efficient water drainage system (sewer networks).