Rain gardens with OSL on Rundelsgatan in Vellinge
Both surfaces produce rain water run-off that flows into sewer system without local treatment. The requirement was to higher safety on the street and create new stormwater functions to manage rainwater locally.
The street today includes rain gardens, submerged plantbeds that can retain and clean rainwater locally and slow down traffic to increase street safety. The rain gardens are built on top of OSL (open subbase layer) that provides sufficient rootzone for vegetation and capacity to retain rainwater for irrigation of plants. It increases the street’s resilience especially during extreme weather periods like drought and cloudbursts and makes the street more attractive.