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Local codes

Discussion in 'Irrigation' started by Allen's LS, Dec 17, 2005.

  1. Allen's LS

    Allen's LS LawnSite Member
    Posts: 0


    I am asking this to you mainly because you are a local guy. I don't install irrigation systems but would like to learn. But I do repair a lot of them on many of my accounts. Anyway, one of our condo associations had some work done where they had to dig up 30' of a straight run. But now they want to know what code is for depth when they (I) put it back in the ground. Do you know what it is, or where I can find local codes for Irrigation?
    Any help would be appreciated.

  2. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,665

    I don't see anything much in the way of codes for the actual irrigation part of the job. This follows by having proper backflow prevention in place (toxic-rated backflow protection in these parts) - Once the water supply is protected from the system, then what the hey, go nuts. (to paraphrase one local plumbing inspector)
  3. Broker

    Broker LawnSite Senior Member
    Posts: 382

    Wet Boots is right. Codes for irrigation are backflow regs.
  4. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,799

    There is no depth code in WA for irrigation water. Backflow codes vary from county to county.

    My general rule of thumb is 10' for 1.25 inch and smaller and 12' for 1.5 inch and larger.

    Apparently there is some sort of code for the low voltage wiring, because we have had our wiring flagged by an inspector that was there to inspect a power ditch once. Never did find out what he wanted.
  5. JeffY

    JeffY LawnSite Senior Member
    Posts: 324

    Wow Jon...you go pretty deep. I'm sure 10 feet is overkill. J/K

    I know you meant inches.
  6. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,799

    No, I really do go down 10', I use this trencher:


  7. AssuredServicesCo

    AssuredServicesCo LawnSite Member
    Posts: 113

    Do you have to use a ladder when doing repairs?
  8. Allen's LS

    Allen's LS LawnSite Member
    Posts: 0

    Where is the best place to look for the backflow preventer codes?
  9. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    He usually takes an elevator. Course, if it's rained then he may have to transfer to a ferry. :p
  10. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    Best place is to contact your local city for their backflow or cross-connection ordinances. I'll bet though that they'll be based on the National Plumbing Code, Uniform Plumbing Code, Model Plumbing Code, National Standard Plumbing Code, etc.

    You can also do a web search and come up with plenty of cities in WA that have their cross-connection specs online. Use "backflow prevention" or "crossconnection" as your search criteria and it'll open up a LOT of sites.

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