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  1. #1
    Join Date
    Jun 2005
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    Canberra
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    Default Natural gas main - how deep?

    Imagine my surprise yesterday when I started removing a concrete path that runs across the front of our house, and I discovered a bright yellow plastic pipe running *right* underneath the path.

    I can only assume this is the natural gas main, as it runs in a direct line between the gas meter and the street, and there is nothing else it could be.

    So the question is, how deep should this pipe be?

    When I say it was running underneath the path, I mean I lifted a section of path, and there it was. No digging required. The concrete must have been laid right on the pipe.

    I now have a problem. I plan on replacing the concrete path with a crushed gravel path. Obviously this pipe is now in my way. Is it the supply companies responsibility to lay this in a sensible manner, or is it mine?

    Sam

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  3. #2
    Join Date
    Feb 2006
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    united pest managers or Australia
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    Default

    there maybe a sticker in your meterbox, telling you who did the work.
    Or ring your gas company.
    Check with them before doing anything

  4. #3
    Join Date
    Jun 2007
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    Adelaide
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    Default how deep

    My plumber told me the min depth is 500mm

    Cheers
    Juan


    "If the enemy is in range, so are you."

  5. #4
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    Jan 2007
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    Default

    At least 450mm cover ( includes thickness of concrete.)
    If you dont play it, it's not an instrument!

  6. #5
    Join Date
    Apr 2006
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    Melbourne Victoria
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    Default

    I'd say teh original builder / plumbers are responsilbe. Supply companies are only to the boundary


    My last house was on a slope down from the road and it had a brick path 700 mm wide running across teh front, then a 1 mm high retaining wall. had the power cable under just under the brick path running across the front of the house, and a metre from where it was supposed to be. It may have been teh minimum 450-500 when it started.

    THe water main was lying on the sand under the bricks.

    At the end of the house there was a dirt mound higher than the path. When i was relaying the path I started to dig up this mound to the same level as the path. On the way down i passed a yellow pipe, grazing it with the crowbar, and continued down a further 300 mm to the path level.

  7. #6
    Join Date
    Nov 2005
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    Kilsyth
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    Default

    gas supply from the meter to the house here is almost 100mm below ground level, nice gal pipe (errr, when it was new it was a nice gal pipe, it has a decent rust surface now), damn glad I found it before the back hoe levels the front yard tomorrow.

    The house was built in the early 1960s', so I am guessing it was quite normal to have gas & water pipes only inches below ground level

  8. #7
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    Jun 2005
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    Default

    Hmm, well mine was right underneath quite a thin slab. I reckon the slab was about 80-100mm thick. Thin enough that one swift smack with the sledgehammer turned it into a set of mini-slabs.

    Guess i'll have to phone a gassie and get a quote for getting it deeper under terra-firma.

  9. #8
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    Aug 2007
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    sydney
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    Default

    Hi sammy, i dont know about canberra but sydney that pipe (gold line) is installed by contractors employed by the gas company(AGL,Agility) in a similar fassion to your testra service cable.
    My advice is call them up and tell them to send a contractor out and dig it down deeper (inside your boundry is 300mm deep outside your boundry is 450mm deep thats in Syd.)
    But as with telstra they are a law unto them selves.
    ** If by chance you cut through that pipe it can be quite easily sealed off by folding the pipe over same as you would do with a garden hose and this will create a gas tight seal.

  10. #9
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    If It's the gas supply main Before the meter the Gas company have to do it. And they better do it for free.
    If you dont play it, it's not an instrument!

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