Case Study
Croes Atti, Flint, Wales
This project was carried out for Costain, on behalf of Welsh Water.
Shown in the picture on the right is the 1200mm internal diameter Iseki ’Super-Unclemole’ TBM prior to undertaking a 40m drive underneath the Chester-Holyhead Railway Line.
Details
Client: Costain / Welsh Water
Services Provided
Scope of Works at Croes Atti
- Other works required to carry out the crossing included sinking a 6.00m diameter drive shaft, approx 8m deep
- Sinking a 4.00m diameter reception shaft, approx 7m deep, constructed on either side of the Chester-Holyhead railway line in difficult ground conditions comprising very wet clays with large boulders.
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