'oil company device'
I live in Italy in an old apartment building (once a barn) built about 400
Nobody knows the exact route of the sewer pipe. We only know the location
of the last drain well.
Due to a court litigation, we need to ascertain the route of the sewer pipe.
The only way known here is to begin digging from the drain well and follow
the sewer pipe up to the main sewer pipe (the one owned by the city) buried
somewhere under the street level.
This would be very expensive, as it means breaking the floors of the shops
located at ground level and stopping their activity for several days.
I guess that someone must have built a simple device fitted with a
gyroscope and an inclinometer that can be inserted in the drain well and
follow the sewer pipe.
The device will transmitting back infos by wire and a PC will be able to
draw the route of the device, i.e. of the pipe.
A jet of compressed air could be the chosen locomotion system.
I heard that oil companies use this mousetrap, so someone out there must
build and sell it.
Any hint ?
What about the device used for determining where breaks are in underground telephone cables?
I believe they induce a standing wave on the cable, and then use a search coil (or antenna) to determine where the feild is, and where it is not.
I have seen these devices work through 2 feet of soil, to an accuracy of 4 inches.
If there is a conductor (introduced, or pipewall, or standing water) that you can induce the wave into, then 'map' using a sensitive search device, you should be OK.
Hope this helps,
Duilio Foschi wrote:
Here in the US they drill horizontally to install new pipe for cables. They can
steer the drill while doing this. Somehow they must be tracking where the end of
the drill is. I wonder if anyone on the PIC list knows how this is done. I have
wanted to know this for quite some time and now seems like a good time to ask.
where can I find more re those devices ?
>What about the device used for determining where breaks are in underground
thank you for all the datailed infos.
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