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A13 National Grid Gas Diversion

Joseph Gallagher were contracted by Fastflow to undertake diversion works on a high-pressure gas main for National Grid.

An Overview

Joseph Gallagher were contracted by Fastflow to undertake diversion works on a high-pressure gas main for National Grid. Microtunnelling was the perfect solution for this project, given the non-disruptive nature and limited site footprint available.

Two microtunnel drives were required underneath the main carriages;

  • one 63.4m at the A13 section
  • one 44.1m drive under Stanford Road

Our works consisted of:

  • 6m x 5m x 5.3m sheet piled thrust pit.
  • 6m x 5.4m x 7.5m sheet piled thrust pit.
  • 14.2m x 4.2m x 6.8m sheet piled reception
    pit

This project was entirely managed with internal resources, including 40t and 50t cranes provided by NRC Plant and man-riding cages and the ISEKI Microtunnelling machines, provided by Specialist Plant Limited, all part of the Joseph Gallagher Group of companies.
This project was entirely managed with internal
resources, including 40t and 50t cranes provided
by NRC Plant and man-riding cages and the ISEKI
Microtunnelling machines, provided by Specialist
Plant Limited, all part of the Joseph Gallagher
Group of companies.