Drain stub location

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JazzJohn

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We have a building that we think has a buried drain stub that was meant for a future shower. It has been concreted and epoxy-floored over. In the same area are a stack, toilet and sink drain. All pvc.
What's the best way to find the end of the pipe (if it exists) without breaking up the floor first? We have a rough idea where it should be because there are overhead supply lines for the faucet. Can a camera snake be routed from the stack to take a turn into an arbitrary connected pipe?
 

Chucky_ott

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That's my thinking. Or at least the large void from the pipe would affect the concrete temperature. Not sure I'd buy a thermal camera just to find out if it works.

Alternatively, a snake and metal detector. Not sure I'd buy a metal detector to see if that works.

Not sure what the pros use for their locates.

At least the thermal camera has other uses around the house.
 

Reach4

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Thinking about that thermal idea. One thought might be that under a heated floor in winter, the area with no plastic pipe would run cooler. That air might be an insulator enough to make a difference.

Another thought I had is to block the path (with a Cherne test ball) below where the other drainage joins the toilet drainage. Circulate hot water between the closet flange and the lavatory drain. The shower would be a dead end, so the bulk of the pipe would not heat up, but maybe turbulence would heat the first few inches of the path from the shower. Likely that is a 45, so project a line...

See if any of your friends have a FLIR camera attachment for the mobile.

Just speculating. I have no relevant experience.
 
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