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Lightweight solution proves its worth at Murrayfield

Construction of the new tram stop at Edinburgh’s Murrayfield Stadium is now nearing completion with laying of the tracks underway thanks to innovative embankment construction techniques.

Main contractor Graham had to overcome contaminated land issues, poor ground conditions and limited space between existing infrastructure in order for the work to reach this milestone.

According to consultant for the scheme Parsons Brinckerhoff, conventional embankment construction techniques to overcome the poor ground for the 7m high structure would have threatened the stability of an adjacent rail line and nearby buildings. The issues were overcome through a combination of ground improvement by Keller and use of Leca LWA lightweight fill combined with a Tensar Geogrid wall system for the embankment construction.

“One of our main issues was to get such a large earthworks structure founded within the underlying soft ground conditions without significant ground improvement being undertaken,” said PB geotechnical engineer Tristan Morgan. “The light weight attributes of the

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