The actual discharge from nozzles will vary from 90% to 95% of the theoretical discharge. For hydraulic sluicing the following pressures at base of nozzles are recommended:
Light fine material and loose sandy soil:
Stiff loam overburden:
Hard clay:
The following amounts of water are recommended to move 1 cubic foot:
Heavy sand:
Average quarry overburden:
(3.D.1) $$ Q = 19.636*C*{d_1}^2*\sqrt {h} $$
Where:
For sprinkling golf courses it is reasonably safe to figure 10 gallons per minute for each Green with 35 PSIA at hose valve outlet and 25 gallons per minute for each Fairway with 35 PSIA at hose valve outlet. The standard conditions are 100 feet of ¾ inch hose for greens sprinklers and 100 feet of 1 inch hose for fairway sprinklers. Use gate valves with a hose nipple at all outlets instead of the customary hose faucets on account of the friction loss in the hose faucets.
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Fundamentals of Variable Speed Pumping: 1-Part On-Demand Webinar
This webinar is an introduction to variable speed pumping and how to use it for more efficient and better controlled pumping. It explains how flow and pressure are controlled with variable speed pumping and when to use each. Also covered are the devices used to achieve variable speed pumping, including variable frequency drives. The attendee will also learn the benefits provided by variable speed pumping, in relation to cost, operation, and energy savings.
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Last updated on February 7th, 2020