Case Study

Westminster Road, Macclesfield

3.6M 13M Shaft

V J Donegan & Co Ltd were contracted to build an access chamber onto an existing brick culvert to provide an outfall for surface water from a new large housing development for Bellway Homes. With limited tender information on the ground conditions and location of the existing culvert which was some 13m deep.

Details

Client: Quinn Civils for Bellway Homes
Value: £135,000

Services Provided

Segmental Shaft Sinking

General Civil Engineering

Scope of Works

Turnkey package, including ground investigation works
Survey works of the 600 dia deep culvert to establish an accurate line and level
Liaison with United Utilities to gain statutory permission for the works
With all investigations and approvals to be completed within a tight 6-week programme to allow the main works to be undertaken during the school holidays
Construction of a 3.6m dia caisson shaft to a depth of approx. 13m onto the centre of the 600mm pipework
Stabilising of the 600mm brickwork culvert in order to complete benching works
Installation of a 10m height 250mm ductile iron backdrop pipe to take the flows from the new surface water sewers into the outfall culvert
Cover slab installation, carriageway reinstatement and surfacing
Installation of a GRP access ladder complete with intermediate landing platforms