Discussion :: Tunnelling - Section 1 (Q.No.40)
The length of the needle beam used in needle beam method of tunnelling is usually
Answer: Option D
No answer description available for this question.
|Hbk said: (Apr 20, 2021)|
|It is the standard length of the needle beam.
i.e) 5-6 m.
Post your comments here:
Email : (optional)
» Your comments will be displayed only after manual approval.