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  1. #1
    Join Date
    Dec 2005
    Location
    Perth, WA
    Posts
    36

    Default Finding buried utilities

    Hey crew

    Im digging up the back yard in an attempt to a) find sewer and b) lay power cable to my new workshop.

    Said shop has a washroom / toilet so I need to find the sewer. I have council plans and the 1100 dial before you dig plans but I havent been able to find a thing following them. To make things interesting the neighbours have all found that the sewer runs differently to the plans anyway (for their houses.)

    So what I need to know is are there electronic line finders or radio detectors or something that I can use to listen in (say, if the toilet is flushed) and find the bastard? And if so, where can I hire one in Perth?

    Thanks for your help
    J!

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  3. #2
    Join Date
    Aug 2005
    Location
    South Australia
    Age
    77
    Posts
    279

    Default

    Try a water diviner. No, I'm not joking.

  4. #3
    Join Date
    Dec 2005
    Location
    Perth, WA
    Posts
    36

    Default

    You're joking right?

    Where do I find one of them? I have looked at the yellow pages and only found bore drillers etc.

    Cheers.

  5. #4
    Join Date
    Nov 2003
    Location
    Donnybrook ... sorta
    Age
    59
    Posts
    621

    Default

    Crom

    Best way I know to "sense" this type of pipe is a devive called a ground-penetrating radar (GPR) as you can tell they work on radar and bounce back a signal that shows a change in conductivity and/or density ... pipe being empty or full of water should be relatively easy.

    Problem is the only units that I know of in Perth is the ones operated by pipe and underground services locating businesses ie prob expensive (but I don't know so I'm guessing here). There might be one availablr to hire but being about $10k to buy I don't think they'd be cheap.

    So yes the technology is out there, yes it is in Perth but sorry can't help further than that ... can assist you looking them up if you need.
    Ramps

    When one has finished building one's house, one suddenly realizes that in the process one has learned something that one really needed to know in the worst way--before one began.

  6. #5
    Join Date
    Sep 2002
    Location
    Minbun, FNQ, Australia
    Age
    66
    Posts
    12,881

    Default

    Do a google on Underground Service Locators.

    Do a Yellowpages search on Underground Service Locators

    Check here...
    http://www.radiodetection.com.au/und...ndServices.htm
    http://www.geodetic.com.au/category970_1.htm
    http://www.usa.com.au/usa/Utility_Locations.asp
    Cliff.
    If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.

  7. #6
    Join Date
    Jun 2005
    Location
    Sydney
    Posts
    3,096

    Default

    start digging, stop when you find it. Its fun. It really is!
    Cheers,
    Clinton

    "Use your third eye" - Watson

    http://www.flickr.com/photos/clinton_findlay/

  8. #7
    Join Date
    Aug 2003
    Location
    Pambula
    Age
    58
    Posts
    12,779

    Default

    Had to do this once. I dug up the line where it left the house and got a rough idea which way it headed. I knew there was a vertical pipe into the main, so I drilled a hole in the pipe and shoved a bit of stiff wire in there until it stopped. I wrapped a bit of tape around the wire and pulled it out, then used it to gauge where the bend was. Then I started digging a trench perpendicular to the direction the line was running and kept going down until I found it.
    "I don't practice what I preach because I'm not the kind of person I'm preaching to."

  9. #8
    Join Date
    Dec 2004
    Location
    Toowoomba Q 4350
    Posts
    9,217

    Default

    Hi Crom,

    If the map or plan can't be trusted, then it may be worth paying some $$ getting them found once and for all. I can appreciate it may depend on exactly how much $$ would be .

    cheers
    Wendy

  10. #9
    Join Date
    Sep 2002
    Location
    Minbun, FNQ, Australia
    Age
    66
    Posts
    12,881

    Default

    Quote Originally Posted by silentC
    .....shoved a bit of stiff wire in there until it stopped. I wrapped a bit of tape around the wire and pulled it out, ......
    Erk.... what did you do with the wire after that?
    Cliff.
    If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.

  11. #10
    Join Date
    Aug 2003
    Location
    Pambula
    Age
    58
    Posts
    12,779

    Default

    My next door neighbour wanted something to tie up his fence with. I said "I've got just the thing"

    True story
    "I don't practice what I preach because I'm not the kind of person I'm preaching to."

  12. #11
    Join Date
    Nov 2001
    Location
    Wallan, VIC, Australia
    Age
    59
    Posts
    377

    Default

    Sewers tend to be laid in quite deep trenches - much deeper than you'd use for the power.

    One upside, I assume living in Perth you'd have reasonably easy digging in the sand?
    Ray

  13. #12
    Join Date
    May 2003
    Location
    Kuranda, paradise, North Qld
    Age
    62
    Posts
    5,639

    Default

    Crom,
    one sure fire way of locating any services is to get in a excavator or backhoe and start digging!:eek: I once watched a backhoe dig up the water, phone and power in the first two scoops. Seriously though, I have seen diviners find stuff, an old builder I worked for years ago found a buried water mains in a few minutes. Apparently diviners won't/can't take money for their "gift" lest they lose it, or so I've been told. That maybe why you won't find them in the yellow pages.

    Mick
    "If you need a machine today and don't buy it,

    tomorrow you will have paid for it and not have it."

    - Henry Ford 1938

  14. #13
    Join Date
    Aug 2003
    Location
    Pambula
    Age
    58
    Posts
    12,779

    Default

    Wouldn't the sewer need to be full of water for a diviner to find it? If it is, you'll probably need to dig it up anyway, because it's blocked
    "I don't practice what I preach because I'm not the kind of person I'm preaching to."

  15. #14
    Join Date
    Feb 2006
    Location
    Brunswick West
    Posts
    175

    Default

    Try www.dialbeforeyoudig.com.au

    Do it on the web and the utililities will start sending out info that day.....

    Cobber

  16. #15
    Join Date
    Dec 2005
    Location
    NE Melbourne
    Posts
    261

    Default

    When replacing the storm water pipes a few years back, before digging up the old ones the plumber located all the old ones (to give me a quote).

    Anyways he used a thing quite like a metal detector. Had a flexible hose type arrangement with a metal ball on the end. Shoved it down the pipe at the house and wandered over the back yard with this metal detector looking thingy and staked out the location of the pipes every metre or so.

    Don't know if it was just a metal detector or not - found the pipes though.

    Cheers,
    <>
    Hi, my name is Glenn and I'm a tool-o-holic, it's been 32 minutes since I last bought a tool......

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