Civil Engineering - Water Supply Engineering - Discussion
Discussion Forum : Water Supply Engineering - Section 1 (Q.No. 13)
13.
Distribution mains of any water supply, is normally designed for its average daily requirement
Discussion:
23 comments Page 3 of 3.
Sheikh Ovais Ahmed said:
3 years ago
225% is correct.
Water mains are Designed for a maximum of ( Max hourly demand or Coincident draft).
Maximum hourly demand = 270% of av hourly demand (i.e. 2.7 * Qav).
Coincident Draft includes Maximum daily demand which is 180% of Average daily demand (i.e. 1.8 * Qav).
Thus we take an average of these two (270+180)/2 = 225%.
I hope this is clarified.
Water mains are Designed for a maximum of ( Max hourly demand or Coincident draft).
Maximum hourly demand = 270% of av hourly demand (i.e. 2.7 * Qav).
Coincident Draft includes Maximum daily demand which is 180% of Average daily demand (i.e. 1.8 * Qav).
Thus we take an average of these two (270+180)/2 = 225%.
I hope this is clarified.
(1)
Sheikh Ovais Ahmed said:
3 years ago
225% is correct.
Water mains are Designed for a maximum of ( Max hourly demand or Coincident draft).
Maximum hourly demand = 270% of av hourly demand (i.e. 2.7 * Qav).
Coincident Draft includes Maximum daily demand which is 180% of Average daily demand (i.e. 1.8 * Qav).
Thus we take an average of these two (270+180)/2 = 225%.
I hope this is clarified.
Water mains are Designed for a maximum of ( Max hourly demand or Coincident draft).
Maximum hourly demand = 270% of av hourly demand (i.e. 2.7 * Qav).
Coincident Draft includes Maximum daily demand which is 180% of Average daily demand (i.e. 1.8 * Qav).
Thus we take an average of these two (270+180)/2 = 225%.
I hope this is clarified.
(18)
Moyir said:
3 years ago
For daily it's 180%, for hourly it's 150%, for monthly it's 140%.
(1)
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