T : +353 (0)21 4968917    |    E : info@sorensen.ie   |   A : Forge Hill Cross, Kinsale Road, Cork, Ireland

+353 (0)21 4968917

info@sorensen.ie

Forge Hill Cross, Kinsale Road, Cork, Ireland

Projects > Drainage

Limerick Main Drainage

2000mm tunnel 600m long and 6 km of pipe


Client :
Value : €14,000,000
Start Date :
2002
Completion Date :
2004


Consultants

J. B. Barry, Tramway House, Rathmines, Dublin 6



General Description

This involved the construction of a 2m internal diameter pipe under the River Shannon 600m long with ancillary works. This was achieved by sinking shafts on the banks of the river up to 16m deep by 2 different methods. One shaft was constructed using a sheet pile cofferdam with a conventional RC structure to complete the chamber. The other 2 were constructed using a pre-cast segmental smoothbore shaft lining and sunk by caisson method. The tunnel was constructed using a Tunnel Boring machine with jacking pipes.



Features

  • 603m of 2m diameter tunnel under the Shannon River
  • 10m x 10m x 16m deep chamber using sheet piling
  • 9m diameter smoothbore segmental shaft 16m deep
  • 4.5m diameter smoothbore segmental shaft 16m deep
  • 6km of 900, 750, 600 and 450mm Pipeline
  • 2No. 450mm Hep30 watermains beneath the Shannon 600m long

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