DUNSHAUGHLIN SEWERAGE SCHEME - TRUNK SEWER

Dunshaughlin Photo 1

Project Profile

Dunshaughlin Sewerage Scheme - Trunk Sewer Contract 1A

Value: €13,300,000
Client:

Meath County Council, County Hall, Navan, Co. Meath. Contact: Mr. Eugene Cummins Ph.: 046-9097000

Consultant:

Nicholas O’Dwyer Consulting Engineers, Nutgrove Office Park, Nutgrove Avenue, Dublin 14. Contact: Mr. John Power Ph.: 01-2969000

Completion Date:

August 2006
Involvement:

Main Contractor / PSCS, 100% participation

Project Description:

This Contract involved the construction of:

  • Pipelaying:    Trunk Sewer approx lengths-
    • 10,200m of 600mm diameter gravity sewer
    • 2,115m of 450mm diameter gravity sewer
    • 945m of 400mm diameter gravity sewer
    • 4,645m of 375mm diameter gravity sewer
    • 8,050m of 225mm diameter gravity sewer
    • 950m of 100mm diameter rising main
  • 355No. Manholes
  • 2No. Pumping Stations
  • 6No. River Crossings, including isolating valve chamber and overflow channel
Special Construction Techniques:

  • Most of this pipeline was constructed cross-country, in fields. At an early stage archaeology was encountered. As it proved too considerable to resolve to avoid this and other construction problems, Ward and Burke negotiated additional wayleave widths with the farmers over the complete length of the Contract. This allowed access to the Works to continue despite the ongoing Archaeological works.
  • Manholes were all precast ahead of the Works by carrying out intense preplanning works.  This minimised any potential problems whilst constructing manholes at depths of some 6m. These manholes were precast at Ward and Burkes precast yard.
  • The river crossings were completed using precast concrete beams as a surround to the twin wall pipes, to avoid any chance of environmental problem in placing concrete in the river. These beams were generally some 12m long and were placed using two 40t excavators in an open trench in the river. This facilitated a constant flow. Floating pollution bunds were provided to the approval of the fisheries board.
  • The sewer network was constructed on narrow roads which required road closures with diversions. The details of these diversions were drafted and approved by the Council in order to comply with H&S requirements.

 

Ward & Burke Construction Ltd, Stradbally East, Kilcolgan, Co. Galway, Ireland
Phone: +353 (0) 91 776827 | Fax: +353 (0) 91 776828
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