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Serious root intrusion

Discussion in 'Irrigation' started by greenmonster304, Nov 6, 2013.

  1. greenmonster304

    greenmonster304 LawnSite Gold Member
    Messages: 3,681

    We work at a this HOA that has a system that irrigates the sides of the road. Over the past six months the pressure on 4 of the zones has gone from acceptable to piss poor. We dug out one pipe today that was almost completely choked off.

    I am at a loss on what to propose because of how fast this is happening and these Linden trees line the whole road so this is going to keep happening. The roots on these trees are super dense and go from the edge of the road to the privet hedge so there is no easy way around them. Any ideas?



  2. SoCalLandscapeMgmt

    SoCalLandscapeMgmt LawnSite Silver Member
    Messages: 2,144

    Replace the entire run in SCH 40 PVC?
  3. DanaMac

    DanaMac LawnSite Fanatic
    Messages: 13,221

    Sch 40 will hold up longer, but it will still get pinched and broken. I've replaced plenty of sch 40 due to tree roots.

    Best answer to give the HOA, is to increase their budget for repairs.
  4. SoCalLandscapeMgmt

    SoCalLandscapeMgmt LawnSite Silver Member
    Messages: 2,144

    Yep. It might hold up twice as long. The other option (if even possible due to valve placement) would be to sleeve the entire run of poly in SCH 40 PVC that is at least 1.5 to 2 times the diameter of the poly.

    Increased repair budget is probably the most cost effective route. We maintain an 89 acre industrial park that has a 3" main line. Some genius decided to install the main line in the parkway where then then planted Camphor trees on a 20' spacing. The trees are now at the size and age where they are breaking the main frequently (at least one to two breaks a month). There are probably a good 200 trees all with the 3" main within 4' of them. There is really noting to do other than make the repairs when it happens.
  5. greenmonster304

    greenmonster304 LawnSite Gold Member
    Messages: 3,681

    I was just amazed how quickly the roots can crush the pipes. 6 months ago some of these zones were working fine.
    Posted via Mobile Device
  6. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Messages: 50,592

    Zones can work fine with a pipe more than 80 percent closed. We're just seeing the final act.
  7. greendoctor

    greendoctor LawnSite Fanatic
    Messages: 10,003

    Line trench with Typar Biobarrier and backfill trench with sand. Yet another reason there is no poly in the tropics. Even then, valves and pipe not protected from tree roots lasts a decade or less.
  8. ArTurf

    ArTurf LawnSite Platinum Member
    Male, from Ark
    Messages: 4,410

    The trees aren't that big so it wouldn't be a huge cost to cut them down and make the area grass only. The advantages would be less maintenance on grounds care and irrigation. Well maintained turf would lood better than the bare ground under the trees also.
  9. greenmonster304

    greenmonster304 LawnSite Gold Member
    Messages: 3,681

    I really don't think that is something they will entertain.
    Posted via Mobile Device
  10. 1idejim

    1idejim LawnSite Fanatic
    Messages: 11,318

    I got a chuckle out of it. 😜
    Posted via Mobile Device

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