Tunnel Engineering

Pick up the correct statement from the following:

  • A. The topographical maps of the Survey of India are useful in the mountainous region for tunnelling
  • B. The height point on the ridge is fixed with the help of reciprocal ranging
  • C. The accuracy of 1 in 10,000 is required for planimetric control
  • D. All the above
Answer: Option D.

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

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