OPTIMISE COMPLETES NEW AMP5 CONTRACT

Posted: Friday 10th December 2010

The Optimise Joint Venture has completed its first design and build contract under the AMP5 Framework Agreement with Thames Water, a £½ million project at Sandford Pitt to the west of Abingdon in Oxfordshire.

The work was required to upsize an existing 225mm clay sewer pipe with a new 300mm and 375mm concrete pipe as an off-line replacement. The main driver to this project was to protect a Site of Special Scientific Interest (SSSI) through which the existing sewer passed, preserving three ponds and a Great Crested Newt habitat.

Optimise worked in close collaboration with consulting engineer Entec, who is retained by Natural England, to capture and remove any newts from the working area. Approximately 90 per cent of the works is on MOD land at Dalton Barracks.

The pipe was upsized using pipe bursting techniques and a section of new 375mm pipeline laid, along with the construction of new manholes and the connection into the existing manholes. The area was then reinstated back to its original condition. The programme had a tight schedule and was completed in just 14 weeks.

Optimise, the joint venture between J Murphy and Sons Limited, Barhale Construction plc, Clancy Docwra Ltd and MWH, was awarded two of Thames Water’s prestigious AMP5 contracts with a potential combined value of around £500 million over the next five years in April 2010.




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