Maea Fields Subdivision, Matamata – Triton Chambers

Located on the outskirts of Matamata, the Maea Fields subdivision will feature 280 high-quality, new homes in a range of contemporary styles. With current development split into three stages, stage 1 features 91 houses, with stage 2 being prepared for future development. To manage stormwater runoff, Bloxam Burnett & Olliver approached Cirtex about providing a stormwater management system, calculated off a 10-year storm event with a 24-hour duration, collected from stages 1 & 2. There was, however, limited land space to position the stormwater system.

DESIGN

Designed to sit beneath a green area of stage 2, the stormwater management system was constrained by proposed housing on either side, plus the development boundary and the main road leading through each stage. The Cirtex design team worked very closely with Bloxam Burnett & Olliver and Maven Consulting, designing a double-stacked Triton stormwater system. The double stack configuration was selected due to the large volume requirement over a limited footprint. This allowed the stormwater system to go deeper underground instead of being spread out.

With a large void area and exceptional strength, the Triton System was selected as a renewable and sustainable product choice. The designed double-stacked Triton system can store 2500 m3 of water and sits on an initial layer of DuraGrid X 20/20, set beneath the first layer of drainage aggregate. The entire system will then be wrapped with DuraForce AS410 Geotextile to prevent soil from infiltrating the system once construction is complete.

INSTALLATION

As a complete package, Cirtex provided the Triton chambers, DuraForce AS410 Geotextile, anti-scour matting and the DuraGrid X 20/20 Geogrid.

Due to its robust yet lightweight design, local contractors J. SWAP found the Triton system fast easy to install. After levelling the aggregate in preparation for the system, the J. SWAP team simply hand placed each chamber, connecting them via the designed grooves on the bottom of each unit. Covering each completed row of chambers with drainage aggregate as they went, the second layer of DuraGrid X 20/20 was laid down before the next layer of Triton chambers were installed.

Cirtex’s double-stacked Triton stormwater system was the ideal stormwater management solution for the Maea Fields housing development, helping to create further possibilities for the Matamata region.

The Triton system provided the following benefits to the project:

• Double stacked system gives a large storage volume over a limited footprint
• Lightweight, robust design
• Quick and easy to install
• Large void area and exceptional strength