IrrigationQuestion 2 of 100
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
Explanation
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.
Practice all 100 questions free — no signup required.
Related questions on this topic
- A rotor sprinkler head throwing water 30 feet is BEST described as which type of irrigation component?
- A zone has four heads each using 3 GPM covering a total area of 400 square feet. What is the approximate precipitation rate?
- Under California's Model Water Efficient Landscape Ordinance (MWELO), overhead spray irrigation is generally prohibited in landscape areas narrower than what width?
- A reduced pressure principle (RP) backflow assembly is primarily used to protect a potable water supply against what?
- A pressure vacuum breaker (PVB) must be installed at what minimum height relative to the highest downstream sprinkler head or outlet?
- An atmospheric vacuum breaker (AVB) has which key installation limitation?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-27 Landscaping Trade Exam · How we review