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What heads for 10 acres of lawn?

Discussion in 'Irrigation' started by greenmonster304, Aug 23, 2014.

  1. greenmonster304

    greenmonster304 LawnSite Gold Member
    Messages: 3,664

    What would you use to irrigate a 10 acre rectangle? Water source is 80 gpm well? Any thoughts?
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  2. BrendonTW

    BrendonTW LawnSite Senior Member
    Male, from Oklahoma City
    Messages: 723

    The well is registered at 80gpm that is just what you measured?

    If the well can sustain 80gpm you can go with larger heads which means less zones but more expensive heads.

    Or you can go with standard 5500's or whatever you use and just have a bunch of heads per zone. Regardless of what you do, if you want to make use of 80gpm on a large property you will probably end up installing 2" line to make up for friction loss and to get the flow you need. Maybe 1.5" depending on the longest run.
     
  3. BrendonTW

    BrendonTW LawnSite Senior Member
    Male, from Oklahoma City
    Messages: 723

    You are going to want to make sure that your well is actually able to sustain 80gpm. If you haven't checked with your water resources board for the capacity that the well is registered to supply, I would do so. If your state doesn't require it or it is not registered then I would probably not count on 80gpm.

    Lot's of well heads I run across will put out that capacity but for no more than 30 minutes to a few hours before the draw down is too significant to continue the flow.
     
  4. greenmonster304

    greenmonster304 LawnSite Gold Member
    Messages: 3,664

    This is based on the drillers specs. Well is not in yet. I have no doubt the well will make 80 gpm, I work on ag systems with wells that make 400 gpm. We have a very large aquifer here.
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  5. BrendonTW

    BrendonTW LawnSite Senior Member
    Male, from Oklahoma City
    Messages: 723

    What kind of pressure will you have?
     
  6. BrendonTW

    BrendonTW LawnSite Senior Member
    Male, from Oklahoma City
    Messages: 723

  7. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Messages: 50,517

    It's an interesting numbers problem. Residential heads might be a baseline. 40 foot spacing with large nozzles. From there, you lower the head count using athletic field heads, but the head costs go way up.

    Of course maintenance is easier with baseline residential heads.

    If the ground was really soft and sandy, I'd worry about the stability of high-pressure high-flow sprinkler heads.
     
  8. Without A Drought

    Without A Drought LawnSite Bronze Member
    Messages: 1,086

    I-40's or rain bird comparable, falcons?
     
  9. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Messages: 50,517

    I remember the last PGP #11 I had running 60+ psi was almost impossible to steady without rocks on top of rocks.
     
  10. gradioc

    gradioc LawnSite Member
    Messages: 61

    We do a lot of athletic fields and have been using the K-Rain ProSport for several years now.
     

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