Manufacture and rehabilitation of surface drainage systems

Dismantling of an approx. 55 m long rainwater pipe DN250-300 incl. inspection shafts (bottom depth up to 4.00 m). Closed rehabilitation of a rainwater pipe DN250 over a length of approx. 65 m incl. shaft rehabilitation. Production of an approx. 130 m long rainwater pipe DN400-500 incl. new construction and conversion of inspection shafts (bottom depth up to 4.00 m), demolition and restoration of surface fastenings.

Within existing parking areas, an infiltration system is planned as trenches (V=400 m³) at a depth of 4 m. In addition, a sand trap (V= 66 m³, area=33 m²) or lamellar clarifier (V= 32 m, area 16 m²) must be built at a depth of 4.5 m and drainage pipes (L=200 m, DN 160-700) and shafts (DN1000-1200). Existing drainage pipes must be connected. The parking areas (A= 950 m²) are to be restored.

Creation and maintenance of a prov. fire brigade access during the construction period.