In February, Aaro were asked to refurbish a 100m long section of a DN1520 stormwater pipe without any excavation. But that wasn’t the only challenge. The Yeerongpilly Green Development was in an environmentally sensitive marshland area, and Cyclone Oma began to form as we started the project. Instead of seeing challenges, our experts saw opportunities and created a plan.
Due to the site constraints, we deemed that the best solution to ensure a structural rehabilitation of the pipe with no excavation was to install our UV GRP CIPP Liner. This technology uses a UV Cured Liner that comes pre-filled with the correct amount of resin and stays sealed in a delivery bag throughout the curing process, making this an environmentally friendly relining solution.
During the preliminary investigation process, we discovered that the headwall outlet ran into dense marshland on the Brisbane River. To manage this, our team built a coffer dam to give the site crew access to the end of the liner, while still dealing with the oncoming king tides.
Putting the environment first, we had to utilise bog mats to ensure that the impact on the surrounding marshland was minimal. For the works, we used a 100t crane to assist in minimising the damage to the surrounding trees.
