Radiant Slab Tubing....Best way to Locate

[bigmig]

I was wondering if anyone has experience with a project where you had to locate the existing hydronic tubing in a
radiant slab. How did you do it?

I have to put some supports below said slab, and it would be ideal if we could do this with a micropile that can penetrate
between the tubes without ruining them.

Thanks in advance.

 

[XR250]

Turn on the flooring and use a thermal camera

 

[milkshakelake]

GPR scanner

 

[HouseBoy]

If you don't have a thermal camera, I have been told that, with the heat on, wet the slab and the tube locations will dry fastest (revealing their location.

 

[EdStainless]

Are the tubes metal or plastic?
I have seen Cu ones located by putting an AC signal on them then tracing with a handheld probe.

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P.E. Metallurgy, consulting work welcomed

 

[JLSE]

Maybe a snake with a magnetic head.... like the guys use to map out leach lines.