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Table 3.1 Water Handling Unit Estimations |
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Description
ID = Inner Diameter |
Rounded Values
Used in
U.S. Measure
Field Estimations
GOOD TO MEMORIZE
ID = Inner Diameter
Volume (Capacity)
| U.S. Measure
Volume (Capacity)
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| One hose length |
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| 1-1/2-in ID x 100 ft |
9 gal |
9.2 gal |
| 1-in ID x 100 ft |
4 gal |
4.1 gal |
| 3/4-in ID x 50 ft |
1 gal |
1.2 gal |
| 5/8-in ID x 50 ft |
1 gal |
0.8 gal |
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Weight |
Weight |
| 1 gal of water at 20°C |
8 lb |
8.3 lb |
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Pressure |
Pressure |
| 1 ft of water head (1 in2 column of water) |
0.5 psi |
0.434 psi |
| Atmospheric pressure |
15 psi @ sea level |
14.7 psi @ sea level |
| 1,000 ft increase in elevation |
0.5 psi decrease in atmospheric pressure |
0.5 psi decrease in atmospheric pressure |
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Draft (lift) |
Draft (lift) |
| 1 in of mercury |
1 ft |
1.134 ft |
| 1,000 ft increase in elevation |
1 ft loss |
1 ft loss |
| Maximum theoretical lift |
34 ft |
33.9 ft |
| Maximum attainable lift with new pump |
29 ft * |
29.4 ft |
| Maximum practical attainable lift |
22 ft |
22.4 ft |
* Pump lift varies with pump efficiency, which decreases proportionately to the hours of use.
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