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HS2 starts first M-shaped cut and cover tunnels

[ad_1] HS2 engineers have adopted a twin arch ‘M’ shape structure design, which is more efficient than the standard box structure, reducing the amount of concrete used. Segments are being manufactured offsite in a factory in Derbyshire for the 2.5km Chipping Warden green tunnel in Northamptonshire. This lighter-weight modular approach […]

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