Tunnel Engineering

The length of the needle beam used in needle beam method of tunnelling is usually_____.

  • A. 2 m to 4 m
  • B. 2.5 m to 6 m
  • C. 4 m to 7 m
  • D. 5 m to 6 m
Answer: Option D.

No answer description available for this question.

Leave a Reply

Your email address will not be published.

Back to top button
error: Alert: Content is protected !!