Drainage: the function


Drainage is a thoroughly complex subject that needs a lot of expertise. However, one should also know about the basic mode of operation of drainage as a layman. Our article explains how draining via drainage works.

What drainages are for

Basically, drainage can be used to drain liquids from where they are undesirable. There are many fields of application for this:

  • the discharge of rainwater or leachate away from the house
  • the draining of a garden
  • the drainage of arable land or agricultural land and other land (landfills, river dikes, sports fields, etc.)

Derivation of leachate or rain water at the house

Around buildings, it may be useful in some cases to divert accumulating rainwater. Such a discharge serves to discharge water from the founding floor and from the walls or wall parts lying in the ground via a drainage pipe.

Basically, an expert and adapted to the circumstances of the walls and the sole of the structure is always sufficient. According to DIN 18195 (building seals), it must be designed in such a way that it always offers sufficient protection against penetrating water.

Drainage is therefore superfluous here in most cases. Whether it is necessary and reasonable in individual cases is always decided by a knowledgeable planner.

Draining a garden

Drying a garden can always make sense if water seeps away too slowly after a rainfall. Specific drainage patterns and the course of the drainage of the respective property size are precisely adjusted so that the drainage is effective. Here you can read more about it.

Draining other surfaces

Even orchards or arable land may need to be drained. In addition, drainage also takes place in sports areas, river dikes or landfills. The techniques used for each are different.

Effect of drainage

A drainage is a sloping pipe that dissipates water. The tube rests on a special seep gravel layer, under the gravel layer is in the drainage ditch also a layer of fleece.

The water can be directed to different points - for example to a canal or to a trickle shaft.

Tips & Tricks

Often it is overlooked that drainages also work on an ongoing basis: They must be rinsed at least once a year, otherwise the drainage can become ineffective and severe building damage can threaten.


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