n IMIESA - Countering degradation with corrugated pipe - pipes, pumps & valves

Volume 44 Number 1
  • ISSN : 0257-1978
  • Author
  • Source : IMIESA, Volume 44 Number 1, Jan 2019, p. 31 - 31
  • Accreditation : Department of Higher Education and Training (DHET)


In high-rainfall areas, degradation can lead to soil becoming unable to absorb rainwater, with the risk of hydrogeological instability. This problem is particularly serious in towns and cities. The rapid expansion of built-up areas has dramatically altered the ratio between rainfall volume and drain capacity, partly as a result of higher flow rates entering the drains, but often as a result of the inadequacy of drainage systems originally designed and built to cater for urban expansion on a far smaller scale.

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