The detail

Making a real difference to the city’s sewerage network, the rehabilitation of over 12km of sewers was completed through the utilisation of four core methods, namely Cured-in-Place-Pipe (4537m), Pipe-Bursting (1033m), Auger Boring (435m) and Open Cut (5172m). By minimising the volume of Open Cut Works we reduced our exposure to the biggest risk associated with a city centre environment – dealing with services.

With pipe diameters varying considerably from 225mm to 1150mm, our expert team also implemented a package of tests, which included Pipe Testing, Pressure Testing, CCTV Post Installation, Water Sampling and Material Sampling. Central to the overall success of the project was the establishment of solid working relationships with key NIW staff.

Assimilating their considerable local knowledge, this partnership approach ensured the successful transfer of flows, the early identification of core infrastructure components, such as valves, and the consideration of bespoke localised issues.