Tunnel Engineering

If ‘N’ is the number of shafts used, then the total number of faces available for attacking the excavation and construction in tunnels are_____.

  • A. 2N
  • B. N + 2
  • C. 2N + 1
  • D. 2N + 2
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Your email address will not be published.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 !!