Strathpine to Samford Road Upgrade – Watermain Relocations & Connections

QLD Civil Engineering was engaged by Hazell Bros to deliver watermain relocations and connections as part of the Strathpine to Samford Road Upgrade. Our works included the installation and commissioning of new  watermains (125 mm, 250 mm, and 315 mm), decommissioning and removal of asbestos cement pipe, and cut-in connections to Unity Water’s network.

We also delivered enveloper pipe installations, horizontal directional drilling, and the grouting and abandonment of redundant PVC and AC mains in line with SEQ standards. 

A key challenge was managing a complex shutdown across a large and hilly area, with thousands of customers potentially affected. QCE worked closely with Unity Water to implement PRVs, pump systems, and S-gate valves, enabling a re-zoning strategy that minimised impact. The shutdown was one of our most technical to date and was planned and executed successfully.

✅ Key Achievements

• Installed and commissioned new PE watermains across three diameters
• Removed and decommissioned existing AC and PVC mains
• Delivered complex network shutdown with minimal customer disruption
• Installed DN500 and DN400 enveloper pipes via directional drilling
• Completed all cut-ins, valves, thrust blocks, and grouting
• Provided full ADAC-compliant survey and as-constructed deliverables