Mango Hill, Queensland

DEQ Consulting Engineers

The Challenge

Australian Tanks were specified on plan to provide 2 x 133,000L underground trafficable detention systems.

Both systems required multiple efficiencies in install time and site costs. Located under a thoroughfare road, it was essential to have prompt delivery with lowering and positioning of the tanks a priority to avoid construction delays and OHS issues with an open excavation for any extended period of time.

The Solution

  • Two (2) x 133,000L systems (each system supplied as 19 x 7000L precast tanks), provided as inter-connectable Stormwater Detention Systems.
  • Each 133,000L system installed in one (1) day with a two (2) man team

The Results

  • Arrival onsite at 7:30am
  • Fully installed by 11:00am
  • Trafficable by a fully loaded semi-trailer, based on the SM1600 traffic design loads.
  • Onsite efficiencies and project saving


  • Australian Tanks 38 x7000L precast tanks
  • All penetrations, risers and access frames
  • All sealant supplied for installation
Residential development – Denman Prospect ACT
A unique hybrid installation combining both water retention and water detention.
Coomera Town Centre South
Australian Tanks teamed up with Civil 360, Golding Contractors and Foxwellat the new Coomera Town Center South, 64 Foxwell rd, Coomera.
Beavis & Bartels Pty Ltd
Project required 150,000L water storage for reuse at the Aldi Brendale distribution centre truck wash bay.
Civilivic, Stormwater Detention
Situated beneath a shared driveway, this 42,000L stormwater detention site presented multiple requirements in project time and cost efficiencies. The site could not be shut down for two weeks for an in-situ solution, therefore an anti-floatation and heavy duty trafficable Australian Tanks precast solution with a one-day install time was the most efficient process available.
Dean Ash Construction
This large 135,000L stormwater detention system required multiple efficiencies in time and cost – located under a roadway, it was essential to ensure both a trafficable and anti-floatation system within a 24 hour timeframe.
Hutchinsons Builders – Toowoomba
By urgent request, Australian Tanks were appointed to provide an underground, trafficable detention system and to have the system fully installed within a 24 hour period.

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