Square Footage into number of zones

Discussion in 'Irrigation' started by hmalexan, Apr 10, 2007.

  1. hmalexan

    hmalexan LawnSite Member
    Posts: 26

    Is there a formula that can be used inorder to figure out how many zones there will be if you have the total square footage of the property being irrigated? Thanks for the help!
  2. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,986

    I remember some kind of formula years ago....wrong! Know your psi/gpm,
    turf & plantings..don't "blanket", sun/shade?, most zones go (in our market)
    7 to 12 gpm @ 50psi operating. Don't forget center heads as plants mature,
    add mainline extensions to areas where you think future zones, add mucho
    spare wire. Do provide "boiler plate" presentation folder & sell service!
  3. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,722

    No such formula can ever exist, since available flow and conditions of climate and soil are not known.
  4. bicmudpuppy

    bicmudpuppy LawnSite Silver Member
    Posts: 2,781

    And on another thread, we have Hank appologizing for being "new".:hammerhead:
  5. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    I guess one could figure it out if you used the smallest spray pop-up available... say a 5' radius. However you'd be installing a gazillion of them for an average system. :)

    What everyone is trying to tell you is that each system is so different based on so many factors that you have to make the sprinklers fit the area to be covered and what plant material and micro-environments you encounter on the site.
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,986

  7. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    But, if the plantings were turf... :laugh:
  8. Remote Pigtails

    Remote Pigtails LawnSite Senior Member
    Posts: 581

  9. HBFOXJr

    HBFOXJr LawnSite Bronze Member
    Posts: 1,712

    The only formula for calculating prices in any service or construction type industry is one that accounts for all costs of doing business, including profit. Basically materials, plus labor, plus labor burden, plus subs, plus equipment, plus over head and finally add a percentage to your costs for profit.

    Once you learn, and it is taught is classes by a number of people, it is easy and makes sense. Your profit can be built and predicted reliably.
  10. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,986

    Well, I have not cracked open a cold Lawn Genie today, but I will now:
    The sprinkler biz is NOT what all the other subs do..it's personality, it's
    trust; I've watched my clients kids grow up...I've had keys & garage door
    combos...showing up to check operation & dropping everything when they
    have a "water feature" is this biz..It's not as anal as you describle.I think I'm
    in the wrong post, but the word is still how to have fun w/sprinklers!

Share This Page