Structural refurbishment of cable tunnel involving;
Spray and hand applied concrete repairs to existing roof slab soffits
Sealing of ground water ingress using injected polyurethane resin grout
Maintenance painting of structural steelwork and cable support using ultra high pressure water jetting and two pack epoxy paints
Provision of new structural steelwork
Removal and replacement of defective roof slab using diamond sawing techniques to minimise noise, dust and vibration
Waterproofing of new and existing roof slabs
Reconstruction of concrete tunnel invert
Client: United Utilities Electricity
Engineer: JAB Design Services
Clockwise from top: Defective roof slab removed using diamond sawing techniques New structural steelwork being installed to support replacement roof Permanent steel formwork and fixing of reinforcement in progress Concrete pour in progress Roof soffit concrete repair work Maintenance painting of roof beams Maintenance painting of cable support brackets Refurbished cable tunnel invert
