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Donegan Civil Engineering

Caisson Shaft and Sewer Replacement – Upperpassmonds Road, Rochdale

A 10.30m internal diameter caisson shaft sunk through wet sandy clays, with augerbore, timber heading and on-line sewer replacement

By: Valentine Donegan

Published: August 6, 2026

Caisson Shaft and Sewer Replacement - Upperpassmonds Road, Rochdale

Client: Balfour Beatty / United Utilities

Project Description / Main Operations

This project was carried out on behalf of Balfour Beatty, for United Utilities. It involved the caisson sinking of a 10.30m internal diameter segmental shaft approx. 15m deep through wet sandy clays.

Scope and method:

Caisson sinking of a 10.30m internal diameter segmental shaft approx. 15m deep through wet sandy clays.
A 762mm diameter steel pipe installed by augerbore approx. 30m in length, connecting the shaft to the existing sewer network.
A timber heading approx. 20m in length to install a section of the rising main, with the remaining 30m completed in open-cut.
170m of 600mm diameter concrete pipes installed along the adjacent road as on-line replacement of the existing combined sewer, including construction of 8 new manhole chambers.
Reinstatement of the compound area and its conversion back into a car park, including reconstruction of a stone wall, kerbing and macadam surfacing.

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

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