UK

Hubbards Embankment, Suffolk

overcoming instability was essential for the success of this project

ByrneLooby designed the cess support measures to stabilise this Network Rail embankment on the Ipswich to Lowescroft line.

At Hubbards Embankment, the area of cess running alongside the track was showing evidence of instability due to over-steepening. With the ballast within the Cess beginning to gradually ravel down the embankment slope, it was critical to ensure its continued viability and safety to protect both the cess and main line.  

The main challenge was to provide a solution which was both economic and robust. Our design used a kingpost wall formed using 100mm diameter Grundomat piles and Armco barrier incorporating soil nails to guarantee robustness.

Through our value engineering approach, we identified opportunities to reduce the required material quantities below those identified in Network Rails standard for a similar solution for the benefit of our client. We navigated Network Rails Approvals Process issuing our design complete with all Form B documentation.

Scope of Project

  • Design of a cess support measures to stabilise an area of embankment in Suffolk
  • The cess support measures comprised of a kingpost wall formed using 100mm diameter Grundomat piles with an Armco barrier incorporating soil nails to ensure robustness.
  • Produced a value engineered solution which reduced material quantities below that of a similar standard Network Rail solution
  • Completed all Network Rail Form B requirements

Project Photos