In January 2014, Concrete Canvas (CC) was specified to line a drainage ditch that runs alongside the Collie-Williams Highway in Collie, Western Australia. The client was Main Roads Western Australia and the installation was completed by Fulton Hogen. CC was selected due to the speed and ease of installation and to prevent scouring. Furthermore the narrow ditch profile made the use of traditional stone pitching (which has been installed in other parts of the channel) difficult or impossible.
Vegetation and debris were removed from the ditch before it was graded to profile. Bulk rolls of CC8 were unrolled along the length of the ditch using a spreader beam and plant. The CC was anchor trenched at the inflow and outflow of the ditch to prevent water ingress, then fixed with ground pegs. Ground pegs were also used along the length of the ditch to fix the CC to the substrate, as the client decided not to line the ditch to the crest so anchor trenches were not possible. A water truck was used to hydrate the CC. Stone pitching was placed on top of the CC at the inflow and outflow of the ditch, where discharge into a culvert occurs.
In total 250sqm of CC8 were installed in just 4 hours by a team of 4. The bulk rolls enabled a fast, easy and cost-effective install under high temperatures of 35 degrees.