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213 NEW DEVELOPMENTS ON THE SANITATION OF SEWER PIPES-A RESEARCH PROGRAM OF THE FEDERAL MINISTER FOR RESEARCH AND TECHNOLOGY ( BMFT)
unpublished
The main cost factor in the construction and operaticn of drainage systems in residential areas continue to be the sewer systems for waste water and storm water. Surveys have shown sewer systems to be in an alarming state of dilapidation which, among other factors, may give rise to diffuse groundwater pollution over large areas. In order to make efficient use of the funds to be spent, progress must be achieved in the development of construction techniques, building materials, measurement,
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