A below-ground tunnel section links the old Beckett wing of St James’s University Hospital in Leeds with the new Bexley wing. During periods of heavy rain, Beckett Tunnel leaked in numerous places.
CCL was called in to carry out a survey to identify possible remedial action.
The leaks damaged plasterboard walls and finishes. The metal stud partition was also disintegrating at floor level and service void racking baseplates and fixings were rusting.
CCL carried out an endoscope study and survey which identified areas in need of remedial action. The findings showed changes in the construction of the tunnel along its length. The first section from the lifts in the Bexley wing down a ramp to the old service corridor door, is in-situ concrete. From the old service corridor door, down to the double doors at the Beckett wing the section is built with steel sheet piled walls. The concrete in-situ floor slab abuts the sheet piles and the soffit is in-situ concrete and has been cast over the top of the sheet piles.
CCL’s proposed solution was the injection of aqueous reactive resins into the cracks to prevent the further ingress of water.
