NG Tunnelling recently completed a foul sewer connection in Bedford for a new client — a project that combined shaft sinking, timber heading and night-shift working to deliver a clean result with minimal disruption.

Project Scope

The site presented an immediate challenge in the form of a sloping bank, requiring a carefully planned 3-metre deep shaft excavation before tunnelling could begin. From the base of the shaft, the team drove a 15-metre timber heading to reach the main sewer line — avoiding the need to break the road surface and eliminating the cost and delays associated with road closures and surface reinstatement.

A new 1050mm internal diameter manhole was installed onsite, with all manhole benching carried out on night shifts to minimise the impact on the local road network during peak hours.

Project Summary

• 3m deep shaft excavation on a sloping bank
• 15m timber heading
• Night-shift manhole benching to reduce disruption
• New 1050mm ID manhole installed onsite

Well done to the onsite team and everyone involved in delivering another successful connection.

About NG Tunnelling

NG Tunnelling is a family-run drainage contractor based in Mitcham, London, with over 40 years' experience in sewer connections, sewer diversions, deep drainage, tunnelling, shaft sinking, open-cut excavation and interceptor trap removal across London and the South East. All works are approved and signed off by Thames Water.

To discuss a project or request a free site visit and quotation, call 020 8648 6644 or visit ngtunnelling.co.uk.