SEWER REHABILITATION STRATEGY IN BERLIN

With ratification of the European standard EN 752 part 5, comprehensive rules have been set out for the rehabilita-tion of drain and sewer systems: hydraulic performance, environmental impact and structural integrity of complete catchment areas are given equal consideration. Taking this into account, Berliner Wassertriebe has developed a sewer rehabilitation strategy. Economic aspects are integrated with a cost benefit analysis; the significance of the remaining useful life of a pipe section is examined.