Tunnel Engineering

Which one of the following linings is suitable for shield driven tunnels particularly in the sub-aqueous regions?

  • A. Brick lining
  • B. Stone lining
  • C. Timber line
  • D. Cast iron lining
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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