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1-29 - BIE 5110/6110 Sprinkle Trickle Irrigation Fall...

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BIE 5110/6110 Sprinkle & Trickle Irrigation Fall Semester, 2004 Assignment #7 (200 pts) Operating Point for Fixed Sprinkler System Due: 29 Oct 04 Given: A fixed sprinkler system (all sprinklers operate simultaneously) in an orchard. Buried IPS-PVC 1-½” lateral pipes (see Table 8.3 of the textbook). Rainbird ® under-tree M20VH impact sprinklers with 5/64-inch SBN-1 nozzle (see www.rainbird.com for technical specifications). Lateral spacing: S l = 40.00 ft. Sprinkler spacing: S e = 40.00 ft. The field is trapezoidal in shape, as shown below: 800 ft 1,100 ft pump mainline 560 ft 0.10% uphill 0.18% downhill In the above figure, only some of the laterals and sprinklers are shown, but remember that the field area is covered with sprinklers in a fixed, permanent system. There are 27 laterals along the mainline. 1
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