The report describes the findings and recommendations of the working party investigating the design, construction, and maintenance of sewers and water mains. It contains deductions from the results of experiments on sewers conducted at research establishment and on site. Important findings were that there is a rapid build up of slime on foul sewers and that large cost savings can be obtained by not limiting the velocity flow in sewers. The roughness values of the slimed pipes is independent of the nature of the pipe material. Information on the current needs of the users of water mains was obtained from replies to a questionaire sent to water undertakings. A list is given of the subjects regarded as being in need of investigation. Some of these topics are already undergoing research by various organisations, the committee recommends that further research should be carried out on leak detection, problems connected with the scraping and lining of pipes, and the design and construction of joints. Appendix I and II contain details of current research at the transport and Road Research Laboratory and Cranfield Institute of Technology. Recommended methods of constructing a granular type bedding and summaries of recent small, medium and large diameter main laying are given in further appendices. /TRRL/

  • Corporate Authors:

    Her Majesty's Stationery Office

    Department of the Environment, 49 High Holborn
    London WC1V 6HB,   England 
  • Publication Date: 1975

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 57 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00132340
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: R&D Rpt.
  • Files: ITRD, TRIS
  • Created Date: Jun 23 1976 12:00AM