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Q: The total water requirement of a city is generally assessed on the basis of
  • A. Maximum hourly demand
  • B. Maximum hourly demand + fire demand
  • C. Average daily demand + fire demand
  • D. Greater of (a) and (b)
Correct Answer: Option D - Distribution mains are designed for maximum hourly demand on maximum day or fire demand whichever is greater. • Pumps are designed for maximum demand taking in consideration additional storage in case of failure. • Filter and other supply instruments are designed for maximum daily demand.
D. Distribution mains are designed for maximum hourly demand on maximum day or fire demand whichever is greater. • Pumps are designed for maximum demand taking in consideration additional storage in case of failure. • Filter and other supply instruments are designed for maximum daily demand.

Explanations:

Distribution mains are designed for maximum hourly demand on maximum day or fire demand whichever is greater. • Pumps are designed for maximum demand taking in consideration additional storage in case of failure. • Filter and other supply instruments are designed for maximum daily demand.