Development of Gerstungen Industrial Park: "Black Tunnel" conversion and sewer connection
Installation and laying of sewage and rainwater pipes in existing tunnels on the tunnel invert: approx. 920 m² plastic sealing membrane (KDB), drainage mat; approx. 100 m³ leveling layer of cement screed; approx. 162 m GRP rainwater pipe DN 800 on steel substructure; approx. 162 m GRP sewage pipe DN 300 on steel substructure; approx. 1,200 m³ cavity filling with lean concrete in sections; approx. 6 m³ brickwork walling made of clinker bricks. Laying of sewage and rainwater pipes outside the tunnel in the trench: approx. 50 m GRP rainwater pipe DN 800; approx. 50 m PP sewage pipe DN 250; approx. 1 unit manhole structure for sewage and rainwater with in-situ concrete lining C25/30; approx. 140 m² access road in asphalt construction AC16TD.
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