Originally Posted by DWreck
I had a pex waterline above the concrete that I noticed when chipping up tile in kitchen. Home warranty was called and came out to bury it further. The guy went at my slab with a jackhammer like a bull. He hit and exposed the PT cable and began to chip around it. He went all the way to dirt and refilled the hole.
What I'm getting at is I saw how hard he hit the cable with a spade on a jackhammer and don't quite believe that a 1/2" drill bit could damage it if I go easy.
Still weary though.
I haven't checked the latest models, but some of the studfinder type tools may be able to detect cables, rebar, or conduit in concrete. Worth a look.