1300 083 042
Pallara Pumping Station & Rising Main
About the project
The Pallara development transforms acreage properties into a residential development. Pensar was engaged by Turrisi/Ausbuild to construct a pump station and trunk sewer mains.
Location
Pallara, Queensland
Client & Duration
Turrisi/Ausbuild
January 2018 - November 2018
Project Scope
- A 2400dia QUU spec sewerpump station with emergency storage facility
- More than 1500m of gravity fed and rising main sewer pipe work (including open excavation and trenchless)
- Bridge crossing of gravity main 100m DN 355 over Blunder Creek
- Mechanical installation of pipework in pump well including flowmeters and pumps
- Specialist sewer infrastructure, including grit collector manhole and odour control units
Challenges
- An 11m deep open cut excavation adjacent to open stormwater drain
- Construction of multiple structures at different depths required very detailed planning and excavation drawings
- The site traversed several private properties, so site access and security issues had to be negotiated
- Connection to existing sewer network under live flow conditions
- Temporary shutdown of water mains was required
- Completing over 300m in a single shot for HDD installation for a gravity main on minimum grade
Achievements
- Completed installation and connection with no contamination of stormwater drain
- Design and construction of innovative manhole deck system expedited work and reduced time spent in hazardous work zones
- Successfully completed live sewer connection with no contamination, no sewer loss and no safety breaches
- Established good communications with property owners resulting in no site access issues
- Completed project with developer’s required timeframe, so tankering on the development was not required
- Project completed with no defects, issues or rework required
