Civil Engineering - Tunnelling - Discussion

Discussion :: Tunnelling - Section 1 (Q.No.31)

31. 

In the wooded bulk-head, used for mucking in steep grade tunnels,

[A]. one opening is provided
[B]. two openings are provided
[C]. three openings are provided
[D]. no opening is provided.

Answer: Option B

Explanation:

No answer description available for this question.

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