March Construction has successfully completed tunnelling under a live rail corridor to replace a section of wastewater main under Hayton road.
This was reportedly the first installation of the perfect lined jacking pipe in New Zealand
The new pipeline had a diameter of 1000 m, replacing the original pipe originally constructed in the 1950s and nearing the end of its life.
“Tunnelling under a live rail corridor doesn’t leave much room for error,” a spokesperson for March Construction said.
“Utilising the expertise of the Soletanche Bachy tunnelling subsidiaries BESSAC and Rob Carr Pty Ltd the project team on Hayton road have successfully installed their 37 m crossing with only 1 mm of the 3 mm settlement tolerance experienced by the KiwiRail assets.
“Well done to all the team involved in this complex piece of geotechnical engineering.”
The March Construction team were able to overcome some challenging ground conditions through complex geotechnical engineering.
For more information visit the March Construction website.