$0.40 cents per square foot of ground watered. TIP #2: If the elevation difference in a zone is 5 feet, the pressure at the lowest head is 2.17 PSI higher than at the highest head. Allen says the cost to install sprinklers on half-acre lawns runs $3,500 to $5,500, and one-acre properties cost $6,000 to $8,000. How long do you need to leave the sprinkler in one spot? Correct obstructions in sprinkler heads that prevent sprinklers from distributing water evenly. Raingun are only suitable for small and medium area. ... 260 gallons per cycle x 2 times a day=520 gallons for both cycles for 1 day 520 x 8 total zones = 4,160 gallons for 8 total zones 2 times a day Turned each of the solenoids and zone 1, zone 2, and zone 3 all turned on. Do this 2 times a week. TIP #1: Proper irrigation design requires that the operating pressure within a zone never vary more than 15 percent. What you do is divide your lawn up in 4-8 sections. For homeowners looking to install a sprinkler system on a quarter of an acre lot, the average price is between $1,900–$3,800.To install sprinklers on half-acre yards costs $3,400 to $5,400, and one-acre yards cost $6,000 to $8,000.This reflects an installation cost of approx. Sprinkler System Cost. Now, you need to know the required flow rate of each sprinkler to operate as well. For example, at 35 pounds per square inch (PSI) the 5000 Series Rotor using the 3.0 nozzle will use 3.11 gallons per minute (GPM). Just wondering if it could be double wired or how the 3 other zones operate? The resulting number will equal how many zones you need. Both Key and Allen say the typical yard they deal with is about a quarter-acre in size and the sprinkler systems cost about $2,500 to $3,500 to install. Went to control box and found only 3 solenoids and I have 6 zones. Zone Calculator is a tool designed to help the installer determine how many heads to install with each zone. Available GPM This is the available Gallons Per Minute that you are using for irrigation for this particular zone. Lot Size: Starting Price: 1 - 2393 sq ft : Partial Small City Lot (Under .15 Acre) $3395: 2393 - 3500 sq ft : Small City Lot Water each section for 20-30 minutes so 1/2 inch of water is applied to each section. In order to determine how many heads you can use per zone, you need to know your water pressure and flow rate. You have to decide permanent or temporary system erection according to the crop pattern and your convenience. If, for example, each sprinkler head will require a flow rate of 1.31 GPM and you have 20 of them, then you will need 26.2 GPM total. With that said, if you have a sprinkler that uses 2.3 gallons per minute, you can put 4 of them on a zone, seeing that 10.7 / 2.3 = 4.6. RainGun Sprinkler Irrigation System - By Area (1 to 5 Acres) If the land area falls between 1 to 5 Acre you are recommended to go for small Raingun system. 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