Irrigation第 2 / 100 题
Precipitation rate for a sprinkler zone is calculated using which formula?
a.PR = GPM x 60 x area
b.PR = area / (96.3 x GPM)
c.PR = (96.3 x GPM) / area
d.PR = PSI x GPM / 96.3
解析
Precipitation rate in inches per hour equals 96.3 times the total GPM applied divided by the area in square feet covered by the heads. The constant 96.3 converts gallons per minute over square feet into inches per hour. This tells the designer how fast water is being applied so it can be matched to soil intake.
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