Contact us About us Media far fa-map-marker-alt Find a Branch far fa-phone-alt 13 15 52 far fa-user-alt Coates Connect far fa-shopping-cart Hire Now

Equipment for Hire

Access Earthmoving Lift & Shift Site Accommodation Air & Air Accessories Floor & Cleaning Lighting Tools & Equipment Compaction Generators & Power Distribution Materials Handling Traffic Management Concrete & Masonry Heating, Ventilation & Air Conditioning Pipeline Testing Trucks Vehicles & Trailers Confined Space Entry Ladders & Scaffolding Propping & Structural Support Water Management & Pumps Construction Lasers Landscaping Shoring Welding
Equipment for Hire
Access Earthmoving Lift & Shift Site Accommodation Air & Air Accessories Floor & Cleaning Lighting Tools & Equipment Compaction Generators & Power Distribution Materials Handling Traffic Management Concrete & Masonry Heating, Ventilation & Air Conditioning Pipeline Testing Trucks Vehicles & Trailers Confined Space Entry Ladders & Scaffolding Propping & Structural Support Water Management & Pumps Construction Lasers Landscaping Shoring Welding View all

Engineering Solutions

Design & Installation Water Management Structural Support Traffic Management
Engineering Solutions
Design & Installation Water Management Structural Support Traffic Management View all Engineering Solutions

Industrial Solutions

Site Management Equipment & Services Technology & Innovation Industry Sectors
Industrial Solutions
Site Management Equipment & Services Technology & Innovation Industry Sectors View all Industrial Solutions

Power & HVAC

Power Heating Ventilation Air Conditioning Compressed Air Service and Support
Power & HVAC
Power Heating Ventilation Air Conditioning Compressed Air Service and Support View all Power & HVAC Solutions
fas fa-bars Access Air & Air Accessories Compaction Concrete & Masonry Confined Space Entry Construction Lasers Earthmoving Floor & Cleaning Generators & Power Distribution Heating, Ventilation & Air Conditioning Ladders & Scaffolding Landscaping Lift & Shift Lighting Materials Handling Pipeline Testing Propping & Structural Support Shoring Site Accommodation Tools & Equipment Traffic Management Trucks Vehicles & Trailers Water Management & Pumps Welding View all Design & Installation Structural Support Traffic Management Water Management View all Engineering Solutions Equipment & Services Industry Sectors Site Management Technology & Innovation View all Industrial Solutions Compressed Air Heating Ventilation Air Conditioning Power Service and Support View all Power & HVAC Solutions far fa-shopping-cart Hire Now far fa-user My Coates Hire far fa-map-marker-alt Find a branch far fa-phone 13 15 52 Contact us About us Media

Wolli Creek pump station

The pumping station site sat at 9 metres below ground level, in poor soils. When excavations started Sydney Water hit the water table at around 3 metres in depth, meaning increased risk of subsidence in the pit walls and inundation at the base of the excavation.

Sydney Water contracted Coates Hire Engineering and Technical Services, to design, build, test and install a shoring system that would hold the sheet pile walls of the pit, while also dewatering the excavation site so the works could be carried out.

Temporary Works Engineer at Coates Hire Engineering and Technical Services Team, Darren Browne, says the pumping station at Wolli Creek was a complicated site which needed to be secured before workers could safely operate.

“Because the Mega Brace system pushes back on the walls, with adjustable hydraulic rams, we have a certain amount of flexibility to reconfigure the shoring and adjust to the changing conditions, unlike traditional steel bracing”
Darren Browne Temporary Works Engineer Coates Hire

The groundwater was controlled with a large spear-point system, installed to achieve sufficient suction lift at the required flow rates.

Sydney Water Construction Co-ordinator Colin Burrell says due to the soil quality and high water table at the site, the excavation required a fit-for-purpose shoring and dewatering design to ensure that the work could be carried out safely and economically.

“We had groundwater sitting at 3 metres below the surface, which the wall had to retain. The dewatering system needed to keep the pit dry at all times,” he says.

He says the project was completed without customer complaint or disruption to wastewater services. “The Coates Hire team was very professional and they were able to adapt their designs and their approach according to the new conditions. They allowed us to push forward on the project knowing that the shoring and dewatering issues were being dealt with.”

SHARE THIS ARTICLE

{{ socialIcon(api.type) }} {{ socialIcon(api.type) }} {{ socialIcon(api.type) }}
Find out how we can help with your project fas fa-phone-alt CALL US 13 15 52 Submit Enquiry

By submitting this enquiry you agree to Coates's Communications Terms & Conditions

Give us a call
fas fa-phone-alt 13 15 52 fas fa-check 24/7 Online Services fas fa-check Safety Standard Guarantee fas fa-check Same day delivery available
far fa-times-circle Your enquiry has been submitted

Thank you for your enquiry. One of our team members will get back to you as soon as possible.