Sprinkler Irrigation Quote needed

Discussion in 'Irrigation' started by Comet, Jun 4, 2001.

  1. greens1

    greens1 LawnSite Senior Member
    Messages: 352

    Avery is 100% correct. The irrigation contractor should not bid on the job untill you know:

    (1) meter size

    (2) size of the line into the house and past the meter, this is usually the limiting factor.

    (3) length of the run, pressure loss through friction

    (4) static, and if possible dynamic, pressure

    The only way to bid a job without the above is, if you are on city water, bid on the minimum reqirements for main, meter and pressure reqired to meet code.

    Example: For the purpose of this example the main line into the house is the limiting factor and the head total = 40gpm with 2gpm heads, we will assume 0 pressure loss from friction.

    1) 3/4" main. Since the velocity cannot exceed 5 fps you could only put 4 heads/ zone, or 8gpm/zone, this would mean you need 5 zones.

    2) 1 1/4" main. you would need only 2 zones.
  2. EarthWorks

    EarthWorks LawnSite Member
    Messages: 135

    It is very difficult to estimate a sprinkler without some kind of layout of the area. Too many variables. In my area $125 a head would fall in the ball park. Still would depend on soil conditions, utilities, Boring. You also had some specs for a drip system. Was there one to be installed? Also 17' distance? I am assuming you are talking about pop up sprays not rotors.
  3. Comet

    Comet LawnSite Member
    Messages: 165

    NO!! the contactor wasnt being smart,, he just doesn't do commercial installations what so ever.
    Yes he needs to know water pressure etc.. like you indicated...because thats what determines all your above

    But you mean tell me there is no one bidding on new commercial jobs out there untill the project is completed and established???,,,thats impossible...!!!!!

    These landscape installation jobs start with having to submitt a bid to the GC which includes the irrigation work.
    You cant leave it blank or open, nor wait to the project is up and ready, you have to submitt a proposal meaning one has to come up with somekind of a close figure
    Im the one who bidded on the entire project (which included irrigation) and was going to sub contract it out
    I needed a freekin number to work with which I never got
    Im the one who was taking the risk
  4. Avery

    Avery LawnSite Bronze Member
    Messages: 1,389

    Exactly! That is why,in my opinion, the contractor was playing it smart.
    If that contractor does not do commercial work why did you contact him for a quote? Not that it would matter much who you called. No contractor is going to pull a number out of the hat. He needs to know every detail about the system.
  5. Comet

    Comet LawnSite Member
    Messages: 165

    OK, Thank you all,
    Bid was submitted 6/7/01 10 A.M.
  6. parkwest

    parkwest LawnSite Senior Member
    Messages: 678

    Just curious, but isn't there any minimum requirements and testing prior to becoming an irrigation contractor in New York State?
  7. greens1

    greens1 LawnSite Senior Member
    Messages: 352

    I have submitted proposals for irrigation on new construction, prior to there being a building there. I test pressure at the nearest hydrant and get the other info from the general contractor. The GC must pull the permits, buy the meter and meet code so he should have all the info your IC needs.

    Jim L
  8. Comet

    Comet LawnSite Member
    Messages: 165

  9. curlawngreen

    curlawngreen Banned
    Messages: 309

    What did you bid?
  10. Comet

    Comet LawnSite Member
    Messages: 165

    I allotted $8,500.00 within my bid for the irrigation installation.
    Total bid was $ 61,102.00
    Yes they where pop up sprinkler heads for the lawn areas and drip system emitters for trees, shrubs and plants. (18 trees, 325 plants, 8,000 sf sod)
    I see the difficulty here now trying to explain a job layout such as this on a message board.
    sorry about that.

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