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Finding/Locating sewer line under basement floor

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Ron

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Jan 11, 2012, 1:04:38 PM1/11/12
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I own a property that has a cast iron sewer line that runs under the
basement floor, and I want to be able to mark out and locate where it runs
under the basement floor. I know that I could hire a company to come out
and do that, but I am wondering if there are any fairly cheap, creative, and
interesting/fun ways for me to try to locate the line myself.

For example, is there some kind of small signal generator that I could
attach to a sewer line snake and detect the signal from above with some type
of detector? -- maybe something that Radio Shack or some electronics store
might sell?

Or, are there relatively inexpensive underground pipe-locating devices that
I could rent somewhere and do the job?

Would a metal detector be able to detect a cast iron pipe under a concrete
floor (assuming that the pipe is not down very far below the floor?


Stormin Mormon

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Jan 11, 2012, 1:18:41 PM1/11/12
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You could buy about 50 pounds of radioactive waste from Japan (on ebay) and
put that in the drain. Use a geiger counter to follow the signal. That's
creative, fun, and memorable.

Toner tracer set like the phone guys use. On sale, at HF.
http://www.harborfreight.com/cable-tracker-94181.html

Have your mother in law yell into the toilet, and pretend to trace the line.
Keep saying "A little louder, dear"

DAGS: http://tinyurl.com/83atd7u

I'll think on this for a while, and some other zany ideas will come to mind.

Christopher A. Young
Learn more about Jesus
www.lds.org
.

"Ron" <R...@kjhgfghj.jkh> wrote in message news:jekivn$2o3$1...@dont-email.me...

Joe

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Jan 11, 2012, 1:54:48 PM1/11/12
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First try tracing it with a simple magnetic compass. If that is not as
effective as you need, rent a regular plumbers device. You could also
borrow (or buy) a metal detector which will do the job.

Joe

Limp Arbor

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Jan 11, 2012, 2:19:53 PM1/11/12
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On Jan 11, 1:18 pm, "Stormin Mormon"
<cayoung61***spambl...@hotmail.com> wrote:
> You could buy about 50 pounds of radioactive waste from Japan (on ebay) and
> put that in the drain. Use a geiger counter to follow the signal. That's
> creative, fun, and memorable.
>
> Toner tracer set like the phone guys use. On sale, at HF.
>    http://www.harborfreight.com/cable-tracker-94181.html
>
> Have your mother in law yell into the toilet, and pretend to trace the line.
> Keep saying "A little louder, dear"
>
> DAGS:http://tinyurl.com/83atd7u
>
> I'll think on this for a while, and some other zany ideas will come to mind.
>
> Christopher A. Young
> Learn more about Jesus
>  www.lds.org
> .
>
> "Ron" <R...@kjhgfghj.jkh> wrote in messagenews:jekivn$2o3$1...@dont-email.me...
>
> I own a property that has a cast iron sewer line that runs under the
> basement floor, and I want to be able to mark out and locate where it runs
> under the basement floor.  I know that I could hire a company to come out
> and do that, but I am wondering if there are any fairly cheap, creative, and
> interesting/fun ways for me to try to locate the line myself.
>
> For example, is there some kind of small signal generator that I could
> attach to a sewer line snake and detect the signal from above with some type
> of detector? -- maybe something that Radio Shack or some electronics store
> might sell?
>
> Or, are there relatively inexpensive underground pipe-locating devices that
> I could rent somewhere and do the job?
>
> Would a metal detector be able to detect a cast iron pipe under a concrete
> floor (assuming that the pipe is not down very far below the floor?

Simple:

"Many dowsers today use a pair of simple L-shaped metal rods. One rod
is held in each hand, with the short arm of the L held upright, and
the long arm pointing forward. When something is found, the rods cross
over one another making an "X" over the found object. If the object is
long and straight, such as a water pipe, the rods will point in
opposite directions, showing its orientation."

from:
http://en.wikipedia.org/wiki/Dowsing

Pete C.

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Jan 11, 2012, 2:29:32 PM1/11/12
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Underground pipe/conduit/wire tracers can be rented from places like
United Rentals. They couple a signal from a transmitter onto the exposed
part of the line in question, normally with an inductive clamp
connection, and a separate handheld metal detector style receiver is
used to sweep the ground to locate the line. You sweep back and forth
over the line to find the peak signal which should be directly above the
line. If there is rebar / mesh in the slab if could make it more
difficult to pinpoint the line under it.

Steve Barker

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Jan 11, 2012, 6:17:41 PM1/11/12
to
metal detector also find that rebar in the floor.

--
Steve Barker
remove the "not" from my address to email

Ted

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Jan 11, 2012, 4:32:58 PM1/11/12
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On 1/11/2012 2:19 PM, Limp Arbor wrote:

> Simple:
>
> "Many dowsers today use a pair of simple L-shaped metal rods. One rod
> is held in each hand, with the short arm of the L held upright, and
> the long arm pointing forward. When something is found, the rods cross
> over one another making an "X" over the found object. If the object is
> long and straight, such as a water pipe, the rods will point in
> opposite directions, showing its orientation."
>
> from:
> http://en.wikipedia.org/wiki/Dowsing

LOL! Dowsers are as full of shit as a Christmas goose.

If you know someone that can successfully dowse, tell them they can make
a quick million at:

http://www.randi.org/library/dowsing/

HeyBub

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Jan 11, 2012, 5:22:05 PM1/11/12
to
Limp Arbor wrote:
> Simple:
>
> "Many dowsers today use a pair of simple L-shaped metal rods. One rod
> is held in each hand, with the short arm of the L held upright, and
> the long arm pointing forward. When something is found, the rods cross
> over one another making an "X" over the found object. If the object is
> long and straight, such as a water pipe, the rods will point in
> opposite directions, showing its orientation."
>
> from:

I heard where one dowser tried to investigate a crop circle and his head
exploded.


The Daring Dufas

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Jan 11, 2012, 6:41:01 PM1/11/12
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Sniper with a .50 caliber Barrett M107 at least a mile away.

TDD

Red Green

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Jan 11, 2012, 6:54:35 PM1/11/12
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"Stormin Mormon" <cayoung61***spam...@hotmail.com> wrote in
news:4skPq.55127$hS3....@news.usenetserver.com:
How about flush a fish down the toilet and use a fish finder?

Ron

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Jan 11, 2012, 6:57:55 PM1/11/12
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Joe wrote:
> On Jan 11, 12:04 pm, "Ron" <R...@kjhgfghj.jkh> wrote:
>> I own a property that has a cast iron sewer line that runs under the
>> basement floor, and I want to be able to mark out and locate where
>> it runs under the basement floor. I know that I could hire a company
>> to come out and do that, but I am wondering if there are any fairly
>> cheap, creative, and interesting/fun ways for me to try to locate
>> the line myself.
>>
>> For example, is there some kind of small signal generator that I
>> could attach to a sewer line snake and detect the signal from above
>> with some type of detector? -- maybe something that Radio Shack or
>> some electronics store might sell?
>>
>> Or, are there relatively inexpensive underground pipe-locating
>> devices that I could rent somewhere and do the job?
>>
>> Would a metal detector be able to detect a cast iron pipe under a
>> concrete floor (assuming that the pipe is not down very far below
>> the floor?
>
> First try tracing it with a simple magnetic compass.

Thanks, but I am not sure how a "magnetic compass" would work.

> If that is not as
> effective as you need, rent a regular plumbers device.

I am also not sure where I would rent whatever a regular plumbers device is.

>You could also
> borrow (or buy) a metal detector which will do the job.

That may work. I wonder if anyone here has ever tried that since I have no
experience with using any metal detectors. Maybe I'll try searching to see
if the are metal detector websites and/or forums where I can get more info
on how well a metal detector may work for this.


bob haller

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Jan 11, 2012, 7:41:49 PM1/11/12
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On Jan 11, 1:04 pm, "Ron" <R...@kjhgfghj.jkh> wrote:
> I own a property that has a cast iron sewer line that runs under the
> basement floor, and I want to be able to mark out and locate where it runs
> under the basement floor.  I know that I

the underground line is likely terracota pipe. it may not be metal
once it goes underground

hr(bob) hofmann@att.net

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Jan 11, 2012, 7:51:26 PM1/11/12
to
You might try an electronic stud finder at the sensitive setting, it
depends on how deep the pipe is buried under the concrete. Worth
trying.

The Daring Dufas

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Jan 11, 2012, 9:11:54 PM1/11/12
to
A small RF transmitter attached to a fish tape could work. I've used
small pocket AM/FM radios set on AM to find live wires in walls before.
A small AM transmitter that put out a warbling signal could be used.
Might be a fun little project? ^_^

TDD

HeyBub

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Jan 12, 2012, 6:36:53 AM1/12/12
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Oooh! Didn't think of that! It has much to commend it.


Robert Macy

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Jan 12, 2012, 9:21:13 AM1/12/12
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Don't know about 'dowser', but my father used to use those L shaped
thingies to find buried wires/cables/pipes BEFORE he would start any
construction. He could never count on the company's/county's records.
During mid school age after finding them hanging in our garage and
receiving a demonstration of how to use them from my father, I used
the L thingies to map everything I could find in our back yard. I
found all the pipes, even the underground stream that fed our well.
Just a child's project resulting in a map drawn to scale, Father very
impressed.

Explanation for why the L thingies work? Don't know, don't care. They
work. The wires definitely 'feel' like they're tugging at each other
when they cross. Possibly, and I am coming to more believe this, a
human being has more capabilities than thought, and distracting the
mind with weird items 'releases' those abilities, removes
distractions, disbelief, if you will. Always keep in mind that
science DESCRIBES our observations. Science does not DEFINE our
observations.

Robert Macy

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Jan 12, 2012, 10:02:44 AM1/12/12
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Metal Detector? White out of Washington

Stay away from 'toys'

The Daring Dufas

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Jan 12, 2012, 10:07:37 AM1/12/12
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Sorry, I was fantasizing again. ^_^

TDD

Baron

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Jan 12, 2012, 12:35:36 PM1/12/12
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>
> "Ron" <R...@kjhgfghj.jkh> wrote in message
> news:jekivn$2o3$1...@dont-email.me...
> I own a property that has a cast iron sewer line that runs under the
> basement floor, and I want to be able to mark out and locate where it runs
> under the basement floor. I know that I could hire a company to come out
> and do that, but I am wondering if there are any fairly cheap, creative,
> and
> interesting/fun ways for me to try to locate the line myself.
>
> For example, is there some kind of small signal generator that I could
> attach to a sewer line snake and detect the signal from above with some
> type
> of detector? -- maybe something that Radio Shack or some electronics store
> might sell?
>
> Or, are there relatively inexpensive underground pipe-locating devices
> that
> I could rent somewhere and do the job?
>
> Would a metal detector be able to detect a cast iron pipe under a concrete
> floor (assuming that the pipe is not down very far below the floor?
>
>

I had a problem with my sewer line where the line had to be located
under a concrete garage floor. A plumber used a piece of wood placed
between his ear and floor to help amplify the sound. He then had his
partner tap in various places on the floor and also run some water down a
drain. Apparently, between those two tests, he was able to locate the pipe
confidently but not perfectly. He also ran a snake down a clearout and
measured how much was being fed as well as detecting any noise. I suspect
you can use a stethoscope instead of a piece of wood.

Good Luck.


Ron

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Jan 12, 2012, 4:56:19 PM1/12/12
to
I'll have to try the stethoscope idea. I can't picture it actually working
too well, but I happen to have a stethoscope, so I'll try it and post back
how well it worked out.


Message has been deleted

Ron

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Jan 13, 2012, 1:29:43 PM1/13/12
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j...@myplace.com wrote:
> On Wed, 11 Jan 2012 15:17:41 -0800, Steve Barker
> <ichase...@notgmail.com> wrote:
>
>>>
>>> First try tracing it with a simple magnetic compass. If that is not
>>> as effective as you need, rent a regular plumbers device. You could
>>> also borrow (or buy) a metal detector which will do the job.
>>>
>>> Joe
>>
>> metal detector also find that rebar in the floor.
>
> Basement floors dont usually have rebar. A "quality" metal detector
> would probably find a cast iron pipe, but I highly doubt it's cast
> iron under the floor. Normally the cast iron stack enters the floor,
> but under that are clay tile pipes or in newer buildings, plastic
> pipe.
>
> Normally there is a cleanout where the sewer line leaves the building.
> Then there is a main stack in the building, and possibly one or more
> other entry points for drains. Another thing is a basement floor
> drain. The pipes are normally a straight line from the main stack to
> the cleanout at the exit from the building, or from the floor drain to
> that cleanout. Unless the builder was drunk, or the home has has
> major renovations. the run of the pipes should be pretty obvious.

Thanks. I haven't had a chance yet to go to the property and follow up on
some of the other suggestions. As far as figuring out where the underground
sewer "should" be, or probably is, that is a little more complicated in this
property. In most cases, I would be able to do what you said -- look for a
curb vent, look for where the stack is, look fo a cleanout on the outside of
the house, etc. However, this is a huge twin home (semi-detached, meaning
two houses attched side-by-side) that was moved to that location a long time
ago. The front yard is a hill and there is no cleanout there. Near the
sidewalk and curb I have not been able to find any curb vent anywhere --
there may be one, but I haven't been able to find it yet, and I have been
looking -- so I can't guess from there where the sewer line goes into the
house. The only stack in the house for the one bathroom that exists is in
one back corner of the house, near the party wall between the two houses.
Then the sewer line runs at about a 45 degree angle to a floor drain. The
question then becomes, "where does the sewer line go from there" -- either
straight out through the front of the house toward the street, or continue
at an angle and out through the side of the house and then to the street, or
something like that.

Other old houses in the area of similar age have cast iron sewr lines going
out to the street. Whether this one has that or has terra cotta I don't
know.


Message has been deleted

gregz

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Jan 14, 2012, 8:59:26 PM1/14/12
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A metal snake should show up with a metal detector, use steel not
stainless. I tried to see if my pipe bends anywhere by using a camera.
After a lot of fooling around, I gave up looking at the whole pipe. I had
problems with my feed method and camera position. Saw hairs, webs, a worm,
and a creapy crawler. I was also looking for roots, but didn't see any as
far as I got.


Greg

gregz

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Jan 15, 2012, 3:44:48 PM1/15/12
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I just gave myself an idea. Got to borrow the metal detector!!

Greg

fzkas...@gmail.com

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Jul 14, 2013, 8:30:05 PM7/14/13
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harryagain

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Jul 15, 2013, 3:16:52 PM7/15/13
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<fzkas...@gmail.com> wrote in message
news:a2591a7e-cd48-471c...@googlegroups.com...
> On Wednesday, January 11, 2012 1:04:38 PM UTC-5, Ron wrote:
>> I own a property that has a cast iron sewer line that runs under the
>>
>> basement floor, and I want to be able to mark out and locate where it
>> runs
>>
>> under the basement floor. I know that I could hire a company to come out
>>
>> and do that, but I am wondering if there are any fairly cheap, creative,
>> and
>>
>> interesting/fun ways for me to try to locate the line myself.
>>
>>
>>
>> For example, is there some kind of small signal generator that I could
>>
>> attach to a sewer line snake and detect the signal from above with some
>> type
>>
>> of detector? >>

Yes there are. Go down to your local tool hire shop.


mike

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Jul 15, 2013, 3:39:04 PM7/15/13
to
If it's not too deep, a metal detector.

The pipe locator guys inject a signal on the pipe
and detect it from above.

I built a crude one.
used a function generator at 6.5kHz to inject a signal between
the pipe and ground. That just happened to be the peak sensitivity
of the receiver.

Sensed it with a coil wound on a vertical ferrite stick.
Plugged that into the microphone input of a computer.
Used a sound card scope to detect it.
I used a pda and a spectrum analysis program, but any
old computer should work.


houseof...@gmail.com

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Jun 12, 2015, 9:41:39 AM6/12/15
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Dowsing works, don't knock it because you suck at it.

Ed Pawlowski

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Jun 12, 2015, 10:06:36 AM6/12/15
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On 6/12/2015 9:41 AM, houseof...@gmail.com wrote:
> Dowsing works, don't knock it because you suck at it.
>

There are a couple of pipe consultants if you live near New York. They
can find a pipe, open it, and even crawl through it to be sure no clogs.

Uncle Monster

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Jun 12, 2015, 11:00:45 AM6/12/15
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On Friday, June 12, 2015 at 8:41:39 AM UTC-5, houseof...@gmail.com wrote:
> Dowsing works, don't knock it because you suck at it.

I'm sure the OP may have found the pipe in the 3 years since he made the post. ^_^

[8~{} Uncle Time Traveling Monster

Oren

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Jun 12, 2015, 11:05:30 AM6/12/15
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On Fri, 12 Jun 2015 10:16:46 -0400, Ed Pawlowski <e...@snet.net> wrote:

>There are a couple of pipe consultants if you live near New York. They
>can find a pipe, open it, and even crawl through it to be sure no clogs.

LOL

Willy

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Jun 12, 2015, 11:47:40 AM6/12/15
to
On 06/12/2015 09:41 AM, houseof...@gmail.com wrote:
> Dowsing works, don't knock it because you suck at it.
>

Prove it or fut the shuck up!

http://web.randi.org/the-million-dollar-challenge.html

Phil Kangas

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Jun 12, 2015, 1:52:06 PM6/12/15
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"Willy" <wi...@none.not> wrote in message
news:3--dnQ4PhZ-EYufI...@giganews.com...
I believe it works by detecting the magnetic field
of the thing you're looking for. There is a phone
line from my house to the shop and dowsing will
find it easily. There is also an electrical line
from
the shop to the sauna and that is also easy to
detect. Dowsing for a water source is
unpredictable
in my opinion. Those that claim success I think
are paying educated attention to the geology of
the area in question.
The reason I believe it to be a magnetic thing is
because I use a 1/16 steel TIG rod. Alum brass
or SSTL doesn't have the same action.



Robert Green

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Jun 13, 2015, 8:36:24 PM6/13/15
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"Phil Kangas" <pka...@upalphacomm.net> wrote in message

<stuff snipped>

> I believe it works by detecting the magnetic field
> of the thing you're looking for. There is a phone
> line from my house to the shop and dowsing will
> find it easily. There is also an electrical line
> from
> the shop to the sauna and that is also easy to
> detect.

Could it be that they are easy to detect because you already know that they
are there? Every test of "cold dowsing" where the dowser has no idea of
what they are looking for ends pretty poorly.

Dowsing is considered to be a pseudoscience.

A 1948 study tested 58 dowsers' ability to detect water. None of them was
more reliable than chance. A 1979 review examined many controlled studies of
dowsing for water, and found that none of them showed better than chance
results. A 2006 study of grave dowsing in Iowa reviewed 14 published studies
and determined that none of them correctly predicted the location of human
burials, and simple scientific experiments demonstrated that the fundamental
principles commonly used to explain grave dowsing were incorrect.

A randomized double-blind trial in 2012 was carried out to determine whether
homeopaths were able to distinguish between Bryonia and placebo by use of a
dowsing method. The results were negative.

James Randi offered a US$10,000 prize to any successful dowser. The
three-day test of some 30 dowsers involved plastic pipes through which water
flow could be controlled and directed. The pipes were buried 50 centimeters
(19.7 in) under a level field, the position of each marked on the surface
with a colored strip. The dowsers had to tell whether water was running
through each pipe. All the dowsers signed a statement agreeing this was a
fair test of their abilities and that they expected a 100 percent success
rate. However, the results were no better than chance, thus no one was
awarded the prize.

A 1986 article in Nature included dowsing in a list of "effects which until
recently were claimed to be paranormal but which can now be explained from
within orthodox science."Specifically, dowsing could be explained in terms
of sensory cues, expectancy effects and probability. Skeptics and some
supporters believe that dowsing apparatus has no power of its own but merely
amplifies slight movements of the hands caused by a phenomenon known as the
ideomotor effect: people's subconscious minds may influence their bodies
without their consciously deciding to take action. This would make the
dowsing rods a conduit for the diviner's subconscious knowledge or
perception; but also susceptible to confirmation bias.

(This last paragraph explains what I said about knowing where the object was
already. It's easy to find a wire or pipe that you have a fairly good
reason to believe is already there - like a connection to an outbuilding.)

Source

https://en.wikipedia.org/wiki/Dowsing

--
Bobby G.


Tekkie®

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Jun 16, 2015, 4:50:32 PM6/16/15
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Ed Pawlowski posted for all of us...
If it's green it may not be a pickle...

--
Tekkie *Please post a follow-up*
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