Civil Engineering - Tunnelling - Discussion

Discussion :: Tunnelling - Section 1 (Q.No.3)

3. 

In case of drift method of tunnelling, the drift may be excavated at

[A]. the centre
[B]. the bottom
[C]. the top
[D]. the side
[E]. All of the above.

Answer: Option E

Explanation:

No answer description available for this question.

Parth Trivedi said: (Jun 14, 2018)  
Drift method is concerned with expansion of hole by blasting, so hole may be at top, bottom, centre or at sides of it.

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