GETTING THROUGH A DOWNPOUR

This article describes a new system for controlling storm water run-off at source. This simple, straightforward, and inexpensive technique was devised by water engineers in Sweden, France, and Canada, and has been further developed for the UK by Formpave Ltd. It allows rainwater to infiltrate hard surfaces through porous blocks (the porous system) or through blocks incorporating small drainage holes (the infiltration system). The porous blocks for these systems are made from C40 concrete and C49 concrete, respectively. Ultimate drainage is achieved through uPVC pipes at the base of the stone, which pass through the underlying sub-base. The many advantages claimed for these systems include: (1) lower construction costs; (2) lower cost of ancillary works; (3) direct discharge of roof water onto the pavement; (4) control of run-off and elimination of surface ponding; (5) in-situ treatment of hydrocarbons in the run-off; (6) higher-quality water discharge, with very little pollution; (7) ability to recycle the filtered water for secondary re-use; (8) reduced routine maintenance; and (9) better performance in frosty conditions. The life of either form of the new system seems to be about 15-20 years.

  • Availability:
  • Corporate Authors:

    THE CONCRETE SOCIETY

    112 WINDSOR ROAD
    SLOUGH, BERKSHIRE  United Kingdom  SL1 2JA
  • Authors:
    • LEWIS, A
  • Publication Date: 1996

Language

  • English

Media Info

  • Pagination: p. 29
  • Serial:
    • CONCRETE
    • Volume: 30
    • Issue Number: 3
    • Publisher: THE CONCRETE SOCIETY
    • ISSN: 0010-5317

Subject/Index Terms

Filing Info

  • Accession Number: 00726552
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Oct 28 1996 12:00AM