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expanding existing system

Discussion in 'Irrigation' started by Island Lawn, Nov 10, 2001.

  1. Island Lawn

    Island Lawn LawnSite Senior Member
    Posts: 632

    I have a regular landscape maint customer that wants me to increase the square footage her system currently irrigates.


    After some initial research, it dosent seem to be overwhelming.
    However, I'm only in the begining stages of my "Feasibility Study", and thought I'd run it by the pros...

    It's a skinny rectangle 80' x 8' and I'm hoping that I can just extend the closest existing zone to cover this area.
    (How can I know for sure?)

    BTW, the skinny rectangle is across a 25' wide paved street.
    I will have to go under.
    (Hammer drill? Water jet? Any suggestions?)


    I greatly appreciate any and all help.

    Let me know if I need to give more info....
     
  2. Need more info,

    How many heads are running on the "closest" zone?
    what are they, what type and what arc?
    What is your water source size?
    How much bigger are you making it?
    How big is timer and how far from control valves if you have to add one?
    The more info the better.

    Directional boring is the way to get under the hardscape. Depends on your area and soil type though?
     
  3. Island Lawn

    Island Lawn LawnSite Senior Member
    Posts: 632

    Thanks for the help, Tony!

    I'll be at the property early next week and will take a list of your questions with me!

    If there is any thing more I can find out for you, just let me know.

    ~Thanks again!
     
  4. HBFOXJr

    HBFOXJr LawnSite Bronze Member
    Posts: 1,706

    This is no job for a neophyte.
     
  5. Lanelle

    Lanelle LawnSite Bronze Member
    Posts: 1,361

    I agree with Harold.
     
  6. Island Lawn

    Island Lawn LawnSite Senior Member
    Posts: 632

    WHY?

    What's so overwhelming?

    I need to know, so I can understand...
     
  7. If you have a sprinkler pro you can trust....otherwise I think I can help you here. I will need more info before I can make the above predictions of you being a neophyte. Do those two know you?

    Get me that info, in fact you might email me to tell me you posted it because I get busy and forget to come here during the week sometimes, I am usually out repairing LCO's sprinkler fixes!!lol
     
  8. Island Lawn

    Island Lawn LawnSite Senior Member
    Posts: 632

    Here you go Tony...

    Six
    Rain Bird Roters
    3500 Series
    3 are 90 degree arcs
    1 is 180
    1 is 135
    1 is 360
    Here is a link to the manual (You'll need "Acrobat"):
    http://www.rainbird.com/rbturf/products/rotors/download/3500_Manual.pdf
    I'll be working off from 1" PVC
    640 sq ft (80' x 8' rectangle). Existing zone is less than 700 sq ft from my drawing (explained later)
    Timer is Rain Bird ESP-6
    Here's the link to it's manual:
    http://www.rainbird.com/rbturf/products/controlr/espmanual/ESP.pdf
    Control valves are approx 95 ft away. I'm estimating this distance from an old measured drawing I made and am only fairly confident about it. However, I can take my measuring wheel back out there, if need be.
    We are on sand, sand, and more sand.

    Thanks for all your help!
     
  9. smithsonmi

    smithsonmi LawnSite Member
    Posts: 75

    A couple of points:

    You would irrigate the 8x80 area with sprays but you mentioned the closest zone is rotors...you don't want to mix the two on the same zone, much different run times.

    You need to find a zone that is already using sprays and has sufficient capacity left to handle the 8x80 area. (which sounds like close to one zone by itself to be honest). You need to find the water supply capacity in gallons/minute, design the 8x80 area and compute its required GPM and then either add a new zone or find another spray zone that has sufficient 'leftover' GPM to cover the new heads.

    Not rocket science, but not 'just add heads' either.
     
  10. Island Lawn

    Island Lawn LawnSite Senior Member
    Posts: 632

    Smithsonmi,
    Thank you for the info...and the homework!
    Ugh... I was in denial. I'll be needing a new zone.
    I'll post that info ASAP.

    Thanks again!
     

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