Tunnel Engineering

In compressed air tunnelling, the volume of free air provided is_____.

  • A. 6 m³ per second per m² of face area
  • B. 6 m³ per minute per m² of face area
  • C. 20 m³ per minute per m² of face area
  • D. 6 m³ per hour per m² of face area
Answer: Option B.
Explanation: 

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

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