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Donegan Civil Engineering

Foul Water Detention Tank – Bedford Street, Darlington

A 25.00m internal diameter detention tank providing 2,500m³ of additional foul water storage on a Northumbrian Water flood relief scheme

By: Valentine Donegan

Published: August 6, 2026

Foul Water Detention Tank - Bedford Street, Darlington

Client: Seymour Civil Engineering / Northumbrian Water

Project Description / Main Operations

This detention tank was constructed for Seymour Civil Engineering on a flood relief scheme for Northumbrian Water. V J Donegan & Co Ltd were appointed to construct a 25.00m internal diameter shaft which would provide an additional 2,500m³ – 2.5 million litres – of foul water storage capacity.

Scope and method:

Underpinning of the 25.00m internal diameter segmental shaft to a depth of approx. 7m in soft clays.
On reaching formation level, and with all rings built, grouted and caulked, placement of a mass concrete blinding.
Installation of steel reinforcement for the structural concrete base slab, with starter bars protruding for the 4 no. concrete support columns carrying the precast concrete cover slab.

For More Information, contact us at http://www.donegan.co.uk

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