Water Supply Engineering

The yield of a rapid gravity filter as compared to that of slow sand filter, is_____.

  • A. 10 times
  • B. 15 times
  • C. 20 times
  • D. 30 times
Answer: Option D.
Explanation: 

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

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