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Northumbrian starts £2.2M reservoir upgrade

NCE stock water

A major concrete water tank is to be resized as part of the £2.2M project to upgrade the reservoir at Fenham, Newcastle.

The Northumbrian Water project will last for a year, improving the supply to more than 60,000 properties. It will be carried out by the firm’s delivery partner Mott MacDonald Bentley.

The main works involve a 13.5 megalitre concrete tank, said project manager Richard Johnston. The tank is around 50 years old and a combination of age and wear and tear means it needs to be rebuilt.

The footprint of the reservoir is restricted as it is on a residential site, so the size of the tank will be reduced to 9.35 megalitres in order to make it work. Access will also need to be constructed.

Precision hydrodemolition will be used to slice the tank’s roof slab. Old walls will be taken down and when that is complete, new walls will be constructed, which will be stitched into the roof slab and base slab.

“At the moment the tank is a rectangular shape, but when the work is complete it will be more like an L shape, we’re effectively cutting off the corner. The use of hydrodemolition will allow us to be more precise,” said Johnston.

On completion, the tank will be waterproofed. It sits at the top of a reservoir, with another tank to the east. The work will also give the opportunity to carry out network improvements, such as installing flow meters.

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