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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20468  
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From memory there is specialist detectors for water mains but I don't have a clue about them or prices (no doubt expensive) but maybe an idea for you all the same so worth mentioning.
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19th Jul 2012 9:06pm |
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| XS Pete Member Since: 13 Jan 2011 Location: Suffolk Posts: 632  
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600mm is a long way down for a generic metal detector. The wife bought me a pretty comprehensive one from Maplin as a present a couple of years back and on full sensitivity that will only reach about 200mm. I think you might be looking at specialist kit to reliably detect that deep.
Pete |
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19th Jul 2012 10:02pm |
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| walfy Member Since: 29 Aug 2007 Location: Frome Posts: 2661 
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^^^^
I agree, to be detecting down to 600mm with a metal detector you will need something special. How big are the T pieces? Unless they are huge you will have to turn the sensitivity up to allow the detector to see them, but the flip side is that it will then see every other piece of metal between you and the T piece. Are there no specialists in your are with ground radar??? Might be an easier solution 110 D250 SE HT 110 USW SOLD RRE HSE Dynamic Gone, wife killed it VOLVO XC60 R Dynamic with some toys Polaris RZR 900XP SOLD |
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20th Jul 2012 4:37am |
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| chiefstoker Member Since: 11 Oct 2010 Location: Weston-super-Mud Posts: 897 
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This maybe what you need, not sure if you can find something similar where you are
http://www.brandontoolhire.co.uk/en/site-w...ctors.html 2005 TD5 90 Hard Top Beer 'n Sex 'n Chips 'n Gravy  |
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20th Jul 2012 5:56am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17458 
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I have used the kit in the last post before now (to locate a buried galvanised pipe run approx 2' underground) and it worked very well.
From the OP, I get the impression that the task is not to locate the water main, but to find out where on the main the T-pieces are. The equipment above will undoubtedly let you plot the route of the main, but you may have to dig it up to find the T-pieces. If the main is MDPE with metal tees you might be in with a chance (but metal tees on an MDPE main??). If the main is metal then I think you'll have to start digging for the tees. |
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20th Jul 2012 8:16am |
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| WarPig Member Since: 04 Dec 2009 Location: Sheffield Posts: 1748 
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Why rely upon proven technology, this fool doesnt...
Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated  |
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20th Jul 2012 3:40pm |
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| Cannonball Member Since: 19 Jun 2009 Location: Co Laois Posts: 150  
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Saw that for myself around 20 years ago WP. Was totally sceptical until pub across the road was getting a well bored. Bloke just like that came along and pointed to where he said there was water. Started drilling and cut right through a 75mm MDPE main!!
Thanks to all for valued contributions, will investigate further options. Main is MDPE pipe with around half a dozen brass 'T' compression fittings from memory, I suspect one or more may have corroded slightly causing some leakage. |
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20th Jul 2012 5:16pm |
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