About the project
A culvert within the Penrith Water Recycling Plant, New South Wales, was leaking and needed rehabilitation. What at first appeared to be a straightforward project took an interesting turn when a 30 meter section of the culvert was discovered to have an unusual shape and size - between the two internal headwalls was a portion that tapered down to around 50% of the original height before increasing again to the full capacity.
Traditionally, a complex section like this would have been dug up and replaced – a costly and time-consuming process. Calculations showed that applying the twin Rotaloc methodology to this section of culvert would have resulted in a hydraulic capacity that was lower than acceptable. Stainless steel sleeving was also considered but ruled out earlier because of the associated cost and the weight of each section. The delivery team needed to think outside the box and find a solution – or combination of solutions – that was cost-effective, quick to install, and resulted in an acceptable level of flow through the culvert.
Interflow selected Channeline to take on this challenge. As Channeline products are custom-built to any shape and size, we offered a cost-effective solution to the problem, that could be installed quickly and safely.
After performing a trial installation with a timber template, the Channeline product was manufactured and successfully installed.
