Tunnel Engineering

A good blast with a good yield is obtained if the cut hole is_____.

  • A. Normal to face
  • B. Inclined at 45° to the face
  • C. Inclined at 15° to the face
  • D. Inclined at 30° to the face
Answer: Option B.

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

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