Detached house with soakaway and rain garden infiltration (Brøndby 10)

The rainwater is managed in soakaways with overflow to a rain garden and a hollow in the lawn.

The rainwater from the roof and terrace is fed in the back garden to a soakaway via a sludge trap. The soakaway has an overflow to a hollow in the lawn. The surplus soil has been used for a small bank (0.2 m) which ensures that the water does not run onto the neighbouring property.

In the front garden, the roof water runs partly via a sludge trap to a soakaway with an overflow to a hollow in the lawn, and partly to a rain garden. The rain garden has an overflow via a "Copenhagen trench" across the pavement to the road.

As space is limited, an exemption has been made from the required distance in the front garden, and permission has been given for an overflow to the road so as to prevent softening of the soil/roadbed.

The residential road Lindevang in Brøndby Strand forms a starting point for a demonstration project. 15 homeowners have diverted their rainwater from the community sewage system in order to relieve the load on the sewage system with a combination of rainwater gardens, hollows in lawns and soakaways.

The purpose of the project is to develop solutions in respect of civil engineering and regulatory procedures, and also to expand on experience.

This project is part of a collective project in which the road runoff from Lindevang will also be diverted and a Plan B solution for the road and gardens is being examined.

The project is designed for a 5-year rainwater event. A total of approx. 2,200 m2 of roof surface area has been diverted.

Statement by the contact (advisor/consultant/researcher/producer/utility company/municipality):
"Together with the other initiatives in the area, the project will hopefully allow us to avoid having to extend our sewer systems as much as we would have had to have done otherwise. At the same time, it is reasonable for people to get something out of the rainwater locally instead of sending it all the way here to the waste water treatment plant," says project manager Søren Hansen, Spildevandscenter Avedøre.

Project owners: Brøndby Kloakforsyning, Spildevandscenter Avedøre and Brøndby Municipality
Advisors: Orbicon and Haveselskabet
Contractors: Per Aarsleff and Lars Voss

See also detached house descriptions 1, 2, 3, 4, 5, 6, 7, 8 and 9.

Lindevang, Brøndby 10, figur 1, ny

Lindevang, Brøndby 10, foto 1

Lindevang, Brøndby 10, foto 2

Lindevang, Brøndby 10, foto 3

Udviklet af Teknologisk Institut for 19K