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Boring Help

Discussion in 'Irrigation' started by atha152, Mar 14, 2008.

  1. atha152

    atha152 LawnSite Member
    from texas
    Posts: 1

    I have bored a 3" hole under about 25' of driveway with a boring machine that uses water and rotation. I was able to shoot the rod into the right spot, but now cannot get the 1" pipe to go through the hole. We tried not to use to much water in fear of collapse. Any hints would be greatly appreciated.
  2. NC_Irrigator

    NC_Irrigator LawnSite Bronze Member
    from NC
    Posts: 1,415

    ReBore It in the same hole one more time.

    Take a rubber mallet and beat some sch40 through the hole, try 2" if you have a 3" hole
  3. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,385

    when you have the rod thru , stick the pipe on the end of the rod and turn the rod right into the pipe untill its tight. Then just drive the machine back out of the bore.
  4. Bigred350

    Bigred350 LawnSite Senior Member
    Posts: 779

    When going that far we use a piercing tool. I looks like a missil and runs off air. I cant remember the right name for it. Works great everytime.
  5. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,799

    They are called missiles, or moles. They work great until they hit a big rock, or you pitch it wrong, and it comes popping out of the asphalt in the middle of the street :)

  6. Rhino59

    Rhino59 LawnSite Member
    Posts: 10

    What kind of soil are you in? If you're in clay - better use a little more water and add some detergent to it to slicken up the clay.....try some Cascade crystal detergent. If you're in sand? That's a different story.
  7. naughty62

    naughty62 LawnSite Senior Member
    from iowa
    Posts: 368

    If its a rental or borrowed boring machine they should have acessaries such as back reamers, swivels ,slugs,pullers,bentinite products to keep the sandy holes open ,pulling lube.
  8. TennTexan

    TennTexan LawnSite Member
    Posts: 38

    I've used the mole with a lot of success, but Dirty Water is right, they can veer off course. I have put a speed bump in a parking lot before.

    The worst was when the thing veered down instead of up, while doing a bore shot at the Horseshoe Casino in Tunica, Mississippi. We dug up their prized shrub/flower bed right at their front door with a backhoe and never retrieved it. They're supposed to be able to back up but this one wouldn't. It's still down there somewhere. My boss was not happy that day....

  9. Rotor_Tool

    Rotor_Tool LawnSite Senior Member
    Posts: 349

    Get a back reamer to replace your boring bit once you have made it under the drive. You can attach a clevice pin to the back reamer, then hook a king grip to it, then pull the pipe back under the driveway as you back the boring rod out with the back reamer.
  10. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,974

    Geez, will we ever get contractors to give us sleeves?:dizzy:

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