Tunnel Engineering

Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?

  • A. It is suitable for construction in unstable rocks
  • B. In this method, it is easy to install timber support
  • C. Tunneling can be continuous and the work can be expedited
  • D. In case of excessive water, it is easy to take correct steps
Answer: Option C.
Explanation: 

IS 14665 gives details about elevators. It specifies the number, capacityof elevator and number of floors to be served.

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