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what depth to install under asphalt?

Discussion in 'Irrigation' started by dvlscape, Jun 11, 2008.

  1. dvlscape

    dvlscape LawnSite Member
    Messages: 45

    We will be installing a small 2 zone irrigation system for the entrance beds of a corporate center.

    We have to saw cut about 150' of asphalt and drill through 2 curbs to bring water to the system we will be installing. Is there an ideal depth? I'm thinking around 12-16". We are located in southeast PA if that matters and the line will have a shut off and a blow out.
  2. DanaMac

    DanaMac LawnSite Fanatic
    Messages: 13,219

    12"-16" is fine, but install a sleeve and run the pipe in that.
  3. Dennis Spencer

    Dennis Spencer LawnSite Member
    Messages: 108

    Have someone come in and bore it and they will pull a sleeve back through.
  4. irritation

    irritation LawnSite Gold Member
    Messages: 3,592

    I agree, no sense in cutting asphalt.
  5. instyle

    instyle LawnSite Senior Member
    from Canada
    Messages: 380

    Yep, bore it. Way faster!
  6. WalkGood

    WalkGood LawnSite Bronze Member
    Messages: 1,910

    How do you bore 150 FEET (one hundred fifty feet) under asphalt?

    Dig a hole every 15 - 20 feet and shoot under? That won't look very nice.
  7. lowvolumejeff

    lowvolumejeff LawnSite Member
    Messages: 72

    Just had a 2" and a 1" sleeve (pulled together, side by side) done . They did 180 feet under asphalt, trees and thru rock terrain for about $10 a foot. Their bore tip is directionally monitored and guided, so they could stay at any depth you determine. Heck, they even dug valve box holes to the sleeve depth where ever I indicated - included in the price. The conduit is Teflon lined, which make pulling wire or pushing PVC way easier. I contract with a local cable puller used by the utility companies and cable providers.
  8. dvlscape

    dvlscape LawnSite Member
    Messages: 45

    I was not aware that a lenth of 150' could be bored, without digging access holes at intervals, I will look into this locally.
  9. lowvolumejeff

    lowvolumejeff LawnSite Member
    Messages: 72

    Just checked with the company I used. They have three different sized machines, and depending on soil conditions and ease of acess, they can go up to 1000 feet. Price with a 2 inch teflon coated sleeve is $13 a foot.
  10. WalkGood

    WalkGood LawnSite Bronze Member
    Messages: 1,910

    Sub it out to this company. Sit back and take pictures before during and after. Take some video too. We all like to see pics and video.

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