# Long hydraulic formulas

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 Author: Ccadena ID: 275650 Filename: Long hydraulic formulas Updated: 2014-05-30 00:15:53 Tags: Longs formula Folders: Description: Long hydraulic formulas Show Answers:

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1. -2 1/2" friction loss
- 2 1/2" friction loss less than 100gpm
• - 2q2+q
• - 2q2+1/2q
2. Open butt
3. Smooth bore
4. Sprinkler
• GPM= 1/2P+15
• psi= 2(GPM-15)
5. Velocity of flow
When pressure is known=

when head is known=
6. To change (fps) to inches per minute
Multiply by 12
7. To change (fps) to feet per minute
Multiply by 60
8. nozzle reaction
9. Momentary nozzle reaction
10. equivalent nozzle diameter

or just add up gpms
11. pressure when head is known
Pressure=   .434(H)
12. Head when pressure is known
head=   2.304(P)
13. Drafting:
-max lift
-drop in atmosphere psi will lift
• Max- 33.9'
• 1 psi drop pressure will lift 2.3"
14. Volume of:
-square/rectangle
-cylinder cubic ft
-cylinder in gallons
• Sq/rec= LxWxH
• cylinder cubic ft=
• cylinder in gallons=

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