Tunnel Engineering

In case of drift method of tunnelling, the drift may be excavated at_____.

  • A. The centre
  • B. The top or bottom
  • C. The side
  • D. All of the above
Answer: Option D.
Explanation: 

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Your email address will not be published.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 !!