Tarmac provides Precast Solution for Merseyside Pumping Station
A custom-designed precast shaft lining, manufactured and supplied by Tarmac Precast concrete, is being used in the construction of a new underground water and wastewater storage tank for the New Brighton Pumping Station in Merseyside.
The work is part of a £16.6 million investment plan to improve the sewer network on the Wirral, including improvements to the Pumping Station storm water overflow. The works will help to prevent water and sewage from discharging into the Mersey Estuary during heavy storms.
Around 20 of Tarmac’s precast concrete rings, each consisting of 22 segments, will make up the smoothbore tank lining. More than fifty lorry-loads of the segments will be delivered over of nineteen weeks to the specialist subcontractor, AE Yates. The tank lining weighs approximately 16 thousand tonnes, and was manufactured as part of a major contract between Tarmac Precast, the UK’s leading manufacturer of precast concrete, and United Utilities. Measuring nineteen metres deep and twenty metres in diameter, the tank will store approximately 5,000m3 of surface water and waste products during periods of high rainfall, which can then pumped back to the water treatment works.
Stuart Catterall, site manager at AE Yates said: “Tarmac’s precast segments are high quality and ideal for the construction of a wastewater storage tank. By incorporating pre-fitted gaskets into the precast segments, the installation process has been made far less labour-intensive.”
Commenting on the contract, Clive Pountney, account manager at Tarmac Precast added: “Working closely with AE Yates, our specialist team was able to co-ordinate deliveries of precast rings to help the complex installation process run smoothly. Delivering the precast rings over a long period clearly demonstrates our flexibility as well as our expertise in producing and delivering bespoke precast concrete solutions for the water industry.”
Underpinning frames supplied by Tarmac Precast will also be used to allow the segments to be manoeuvred into place and each precast ring to be built underneath the previous one. Using a precast smoothbore lining – just one of a range of segmental lining products supplied by Tarmac Precast - will help to reduce installation costs, accelerate build times and help to cut maintenance schedules.
Work on the Wirral sewerage network was completed in December 2007.
January 2008
