Clarence Street in Riccarton, Christchurch, is one of the busiest in the city.
Adjacent to a major shopping hub, and with pressure on its ageing concrete stormwater pipes, trenchless remediation was the best solution to updating the pipes to meet new standards.
Crews working at night further minimised disruption. In addition, the Christchurch City Council provided stakeholders and residents with clear communications, and well-planned traffic management was in place.
Hayden Powell from the BurrowTech team said the trenchless approach meant that many nearby residents wouldn’t otherwise even have been aware of the work.
Project Engineer, Charlene Stofberg from TDG Environmental said the project was completed over four nights, with bad weather creating a hold-up. “Otherwise, it went pretty well. Handling of the liner was easy, and the curing process itself was quick.”
Charlene said much of the time on the job was taken up by preparations of the pipes and laterals and the physical deployment of the liners took just two nights.
Working manhole to manhole, inside the 600mm pipe, 8.5mm thickness Brandenburger UV liners were deployed for extra strength and protection as the pipe is close to the road surface. (That’s compared with conventional 3mm thickness.) The liners were deployed in two stages over the 170m length.
Hayden said BurrowTech were pleased to supply the UV liner that helped TDG Environmental do another great job.
