Is it necessary to have the same specification in twin tunnel - terms of shape and dimensions?

Jaafar Mohammed @Jaafar_Mohammed3

08 August 2015 1 3K Report

for construction and safetying of tunnel

Madhavi Latha Gali

Need not be. Classic example is I70 twin tunnels with different shapes and dimensions

http://bulletin.pbworld.com/volumes/2014_01/twin_tunnels.aspx

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