Project Description
Downer PipeTech has extensive experience in undertaking sliplining projects, making use of trenchless technology in rehabilitating decaying pipelines.
This is a method of rehabilitation that is both efficient and economically viable as it minimises disruption to other infrastructures around the pipeline area.
The issue
The client Bundaberg Regional Council had identified stormwater culvert assets that were deteriorating and showing signs of wear.
The degraded pipes ran beneath a major road, which serves as a critical route for traffic, including emergency services.
Rehabilitation of the culverts was necessary to maintain structural integrity and road safety.
The solution
The team utilised a precast GRP pipe in sliplining, due to their high tensile strength and resistance to corrosive action.
The pipes are manufactured on order, with exact lengths given to meet the particular needs of the site.
Sliplining technology is also less invasive compared to conventional methods, reducing installation time and costs.
Prior to commencing works, site visits were carried out to inspect the condition of the current pipes and develop a construction program detailing equipment mobilisation, timeline, and tight safety adherence due to the presence of overhead powerlines and traffic interests.
The Sliplining method involves similar works to pipe jacking. This involves installing the GRP pipes inside the existing culverts at each location and grouting the pipes into position. Segments were joined prior to grouting to prevent movement.
The outcome
PipeTech successfully restored the stormwater asset on behalf of Bundaberg Regional Council for the benefit of residents and ensuring continuity of service for many years to come.
By reinforcing the culverts, the integrity of a major road has been protected, providing reliable access for ambulances, other emergency services, and the nearby school, ensuring safe and uninterrupted passage for critical services and local traffic.
