BLB NRW D/ Düsseldorf(WE2348) D-HHU 20.00 Kanalsanierung/Kanalsanierungsarbeiten 065-26-00307

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The Building and Real Estate Operations Agency (BLB) NRW intends to rehabilitate the sewer network of Heinrich-Heine University (HHU) Düsseldorf. The subject of the description of services is the execution of the rehabilitation sections (SA) 3, 10, 11, 13, 16 and 17 Construction site fencing approx. 880 m Removal of topsoil approx. 210 m2 Installation and reinstatement of paving areas approx. 785 m2 Demolition of existing sewers up to DN 200 approx. 230 m Excavation of soil approx. 1,225 m3 Reinstatement of soil approx. 245 m3 Soil replacement, hard chalk limestone approx. 205 m3 Main backfilling: supply and install soil approx. 410 m3 Pipe zone backfilling: supply and install soil approx. 90 m3 Backfilling of cable trenches: supply and install soil approx. 115 m3 Liquid soil: supply and install approx. 190 m3 Disposal of soil BM-0 to BM-F2 approx. 1,765 t Construction works/installations (support/retaining structure) approx. 1,565 m2 Exploratory boreholes for detection of explosive ordnance for support/retaining structure works approx. 130 m Wastewater handling up to DN 500 approx. 1,330 m PP sewer pipes up to DN/OD 200 approx. 315 m Rainwater retention sewer, reinforced…

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