Can you backfill a bore hole under a driveway?

Discussion in 'Irrigation' started by clyde, Oct 25, 2012.

  1. clyde

    clyde LawnSite Senior Member
    Posts: 335

    We have to put a 4" Schd 40 pipe under a driveway. Is there anyway to get some dirt back in there?
     
  2. alldayrj

    alldayrj LawnSite Gold Member
    Posts: 3,761

    you can use a grout or slurry pump or one of those pumps the oil tank abandonment companys use. I think its like a weak concrete mix
     
  3. blakescape

    blakescape LawnSite Member
    Posts: 108

    The red letter sch 40 pvc pipe is a lot stronger than the foam core (black letter) sch 40. Home depot only sells the cheap foam core pipe so you would have to buy it from commercial plumbing supply co like thomas somerville.

    Are you putting this pipe in to run irrigation pipe or conduit to the other side of the driveway? And are you boring with a 4" torpedo mole? If so, there shouldn't be any void space on the outside of the pipe when installes and there shouldn't be a need to fill the inside of the pipe.
     
    Last edited: Oct 26, 2012
  4. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,131

    How much area around the pipe?
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  5. clyde

    clyde LawnSite Senior Member
    Posts: 335

    French drain from under house
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  6. greenmonster304

    greenmonster304 LawnSite Gold Member
    Posts: 3,049

    Like Jim said if you missile, directional bore, or jack it under the drive there should be very little or no space to fill.
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  7. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,131

    I would like to see a link to back your statement up. PVC pipe has an ASTM stamp on it which states what its rated at regardless of the color ink used. Correct me if i am wrong, it wouldn't be a first.
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  8. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,003

    I would think the foam-core stuff is DWV pipe. No big pressure worries there.
     
  9. greenmonster304

    greenmonster304 LawnSite Gold Member
    Posts: 3,049

    I believe they call it "cellular core" and it is only for dwv
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  10. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,131

    I agree boots. I don't even think that HD stocks PVC over 2 in. and i think the referance was about a styrene product rather than PVC.
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