The water regulation around the basement is the basic requirement for dry rooms and the preservation of the masonry. The corresponding drainage with a septic tank and drainage pipes ensures the even and constant drainage of rainwater and groundwater.
Depending on the structural conditions, pipe drains, drainage walls, boreholes and septic tanks are used. Combined drainage systems often achieve the most reliable function. In modern new buildings, the septic tanks are created less and less.
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Different water volumes must be taken into account when dimensioning and type of drainage for the basement. In addition to groundwater, which can be oppressive depending on the level, precipitation and the nature of the soil are important. A regional empirical value is assumed as the amount of precipitation. The water conductivity of the soil is also taken into account.
Under building law, two standards and a municipal statute must be followed for drainage in the basement.
- DIN 4065 regulates the exact requirements for drainage systems.
- DIN 18195 regulates the required building waterproofing, from which the drainage is practically inseparable.
- The drainage statute of the municipality, which regulates the discharge into the sewer system.
A specialist company, preferably a master craftsman, should be commissioned for the professional construction of a drainage system for the basement. In addition to avoidance of any later water damage, the professional also knows how the authority must take place which approval and acceptance.
When combined drainage systems are selected, filters and mats are enormously important. Only with proper use between the drainage members does the overall system work. The most common drainage mammars are created by forgetting or wrongly place these elements.Tips & tricks The collected water from the drainage around the basement can be seen in a cistern or lead to your property for reverse. If you are planning a connection to the sewer, a separate approval is due. Often, the municipalities raise additional sewage fees.