Case Study: Rail Electrification of the Chase Line between Rugeley and Walsall
- Posted at February 25, 2019
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ABC Electrical Ltd identified MGF’s Vertishore as their preferred solution for Network Rail’s track electrification.
As part of the extensive line electrification works between Rugeley and Walsall, an Under Track Crossing (UTX) was constructed at Bescot to accommodate a duct route for cables between cess catchpits at either side of the two lines of track.
After initially presenting to ABC Electrification’s senior Engineering team in Rugby and providing an overview of potential options, GRiPSHORE Vertishore range was identified as the perfect solution for the trench works and a scheme worked up on this basis.
Following an extensive review of the ground investigation report, it was identified that there was made ground and ballast over sandy siltstone with no potential water table issues. The MGF design team, based at the Engineering Centre in the North West, agreed that the ground would be suitable for the use of a Vertishore solution. A design was prepared and agreed based on the soil arching theory, utilising a non-continuous solution of Vertishore with backing boards, sited at 1.5m centres along the trench.
MGF provided a safe means of access for the works to proceed under the track. Despite the remote site location, the team were able to transport the lightweight shoring kit to the site 1500m from the access point via rail mounted bogies. The speed of the installation was critical so a lightweight, easily installed solution was key and GRiPSHORE was ideal for the job. Guidance for the operatives was also provided on-site by Mark Norton, Rail Sector Manager.
For the 1550mm wide trench, MGF supplied 1.6m Vertishore coupled with backing boards and 3500mm square Manhole Boxes for the catchpits. The kit was provided alongside a full package of design information including engineered drawings, design risk assessments and Network Rail F002 and F003 documents.
ABC Electrification’s Contractor Responsible Engineer (Track), Justin Lewis, commented;
“The kit [GRiPSHORE] is simple to set up and use, requiring a short training session which MGF provided as part of the whole package. Network Rail’s onsite engineer was equally impressed with the system, given its speed and ease of use. I’d recommend Vertishore for future trench support requirements and MGF for their willingness to assist us in ensuring our works were completed safely and on time. The team were particularly impressed that the units use water as hydraulic fluid, removing the need for specialist environmental controls”