Question: For B.G. single track railway, the height of the tunnel above top of rails should be

Options

A : 5.5 m to 5.8 m

B : 5.8 m to 6.2 m

C : 6.7 m to 7.3 m

D : 7.3 m to 7.5 m

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Tunnelling - Part 1 more questions

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