Contour Drive – Storm Water Tank Installation

JOB DETAILS

A 25m long by 4m wide by 3.7m deep excavation was required along Contour Drive, Mullaloo nestled within a housing scheme.

The purpose was to mitigate historical flooding by installing storm water overflow tanks.

THE CHALLENGE

1. Location and Access: Contour Drive, being central to the housing scheme, necessitated continuous resident access without disruption.
2. Equipment Delivery: The absence of a laydown area required meticulous planning to ensure equipment delivery and installation efficiency.
3. Underground Utilities: Discovery of a live gas main 1m below ground level posed a critical obstacle to excavation.
4. Technical Requirements: The excavation needed 3.7m under-strut clearance for storm water chamber installation.

THE SOLUTION

• Slide Rail System: Allowed for precise excavation dimensions and minimal earth movement, eliminating the need for extensive benching or batter.
• Collaborative Planning: Developed a phased delivery and installation plan with the contractor to minimize street obstruction and ensure resident accessibility.
• Utility Management: Implemented a back-to-back rolling strut system to secure the excavation while accommodating the live gas main.

THE RESULT

• Project Efficiency: Originally projected for 3 weeks, the project was completed in just 2 weeks, attributed to efficient workmanship and the effectiveness of the slide rail system.
• Community and Stakeholder Satisfaction: The local council, impressed by the solution's effectiveness, plans to adopt similar methods for upcoming storm water tank installations, anticipating reduced project timelines and minimal disruption.