n IMIESA - Securing a century of sewerage service : trenchless technology

Volume 41, Issue 4
  • ISSN : 0257-1978
  • Author
  • Source : IMIESA, Volume 41, Issue 4, Apr 2016, p. 51 - 53
  • Accreditation : Department of Higher Education and Training (DHET)



WORK ON THIS phase of the project began in 2009 when the CCT appointed AECOM SA for the professional services related to the design of the new sewer and the subsequent tender compilation and contract administration. The scope of works entailed the replacement of the remaining portion of the original sewer built in the 1950s. The project, which was successfully completed in the latter part of 2015, had a limited impact on the public and featured uninterrupted road, rail and electricity services, thanks to three main methods of trenchless technology. "The trenchless technologies consisted of nine pipe jacks, two horizontal directional drilling (HDD) operations, and a 1 040 m length of cured-in-place pipe (CIPP)," says Smit.

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