Optus Stadium – Wastewater (Stage 2)
On a brownfield project site that was a former landfill and developed into a world class sporting precinct featuring parklands and a new 60,000-seat stadium (Australia’s third largest when completed), Rob Carr safely and successfully installed approximately 650m of DN110 pressure main. Remarkably, the original tender of a six-week program of works was delivered in a compressed four-week program. Rob Carr worked collaboratively with the Client and key stakeholders such as the design engineers and the Burswood Park Board to provide advice on redesigns, propose alternative methodologies and develop innovations and solutions. Changes in methodology from mostly open trenching to predominantly trenchless methods (through horizontal directional drilling) optimised multiple aspects of the project, including reduction in program, no risk of environmental contamination and lower costs. For example, Rob Carr’s proposed design change for the sewer pipeline from PN12.5 PE to PN16 PE resulted in increased efficiency (no reduction in velocity flow and no pumping losses). Rob Carr’s efforts in completing the project on time and produced an 8% client saving were key to the project making the finals of the Civil Contractors Federation Western Australia Earth Awards 2018 (Category 1 – projects worth under $5 million).
March 2017 – April 2017
WA Department of Treasury