Where Are the Metal Pipes in the Concrete

Site as-builts.

Contact your facility engineer.

Find a company that does underground facilities locating. If you can give them an idea of the possible utilities that may be in the floor and you can give them access to where they go from above grade into the ground / floor, they can often inject a radio signal onto the (metallic) pipe and then track it. In fact, the signal often will inductively couple to other pipes, sometimes all of them, as well as to rebar in the concrete. These can be marked on the floor with paint or other marker so you know where not to drill.

I have done this myself, and as long as you don't want to discriminate among the various pipes, you should be good.

A similar approach can be taken for a floor that has buried tubing for radiant heating, but using infrared scanning. Get the room nice and cold (works well in the winter if you can turn off the heat for a while and open the windows/doors for a while), then turn the heat on high and quickly scan for where you see the layout of buried tubing. I have done this in a couple of facilities as well.

Happy hunting!

Once again, not rocket science:

BOUNTY HUNTER GO...$83.85Newegg.c...

Metal detector. You can look for spare change after you found those pipes.

Start looking in the local Yellow Pages for firms that can do it?

That sounds like expensive overkill to me.

Expensive yes, However with the liability and Hazards associated with trying to insert a 1" pipe into a concrete floor/Foundation with no idea where the gas, water, and electrical lines are, is frought with much potential for Epic Failure. (Murphy's Law and All). I know with your thouroughness, accuracy, and thoughtfullness in reviewing and advising on CR4 you noticed that the GPR was step 3. If O.P. does step 1 and 2 he will hopefully not need step 3. However I would have to have alot of confidence in the accuracy of the site as builts and the Site engineer. GPR would be a very reliable and effective way of not messing something up. I know from past experience that retrofitting in concrete floors and foundations is expensive in its very nature especially if done right! Of course if done wrong it can be even more expensive!

That being said i also will always try to find an alternate route like going overhead or around. O.P. did not indicate what the pipe was for or whether or not this is a ground floor or and above ground floor as in multi-story. The good Lord knows I have built a few troughs to hide a pipe or two in my day!

I also thought the idea of finding a body or buried treasure might make it more interesting. OP could find a Cache of Gold Booty or treasure chest of gems. That could pay for the whole thing. Or how about discovering Lucy's Husband or a Dinosaur skeleton. Hmmmm!

Thank you for the valued input. You could LynOOGLE and see about the cost to have GPR done in this application.

It'll be interesting how OP get's this done.

Hopefully they will let us know, maybe even post a picture.

Cheers.