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Transmission Gully Drainage

Project Title: Transmission Gully Drainage
Client: CPB-HEB J.V.
Location: Eastern Porirua, Wellington, NZ
Duration: 24 Months
Scope:

Silverstrand were engaged by CPB-HEB J.V. to undertake the installation of the transverse drainage as part of the 27km four lane Transmission Gully Motorway project.

    Scopes of work included:
  • Supply of all labour, tools, plant and equipment;
  • Survey of works;
  • Construction and maintenance of access roads;
  • Installation of temporary stream diversions;
  • Excavation, installation and backfilling of 10km + of 300mm dia to 2400mm dia HDPE & RCP pipes;
  • Electrofusion welding of HDPE pipes;
  • Placement of geotextiles;
  • Installation of pre-cast manholes, headwalls and pits; and
  • Installation of rock protection and rip-rap.
   

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