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Cambridge tunnel plan feasible according to Lord Mair

Cambridge’s geology could enable the city to deliver its proposed tunnelled public transport system with minimal settlement risks, according to University of Cambridge professor of geotechnical engineering Lord Robert Mair.

Speaking at the Cambridge Network’s Future of Transport conference last week, Mair, who is also currently president of the Institution of Civil Engineers, outlined the design, cost and engineering challenges of such a project.

He said that the Gault Clay that underlies the city presented ideal tunnelling conditions and use of 4m diameter tunnels at 15m depth below ground level would minimise the risk of settlement issues.

Mair said that Cambridge’s proposed tunnelled public transport system could be delivered for between £400M and £800M, depending on how elaborateness of the network and the number of stations.

 

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