Rebar
Map bar location, spacing, and cover so cores miss the mat instead of cutting through it.
Ground penetrating radar
GPR shows what the slab is hiding.
Before anyone cores, saws, or breaks concrete, Tommy's GPR reads the steel, cables, and voids inside it. No guesswork. No x-ray shutdown.
A pulse goes in. A picture comes back.
Ground penetrating radar sends electromagnetic pulses into concrete. When those pulses hit something different — steel, plastic conduit, air — part of the energy reflects. The antenna listens, and the operator reads the return in real time.
That is why GPR works from one side of a slab. Unlike x-ray, there is no film on the ceiling below and no radioactive source. We can scan slab-on-grade, suspended decks, and tight rooms with a palm antenna, typically down to 24 inches.
What we locate
Post-tension cables
Find live tendons before a saw or bit can release them — the highest-stakes hit on a slab.
Conduits & wiring
Trace electrical and data pathways so a renovation does not take a circuit, or a building, offline.
Pipes
Locate water, sewer, and process lines in the slab before they become a flood.
Voids
Identify hollow spots and deterioration that can drop a slab or swallow a drill.
When you should scan
- Any core, saw cut, or anchor in a slab that might have post-tension
- Older buildings with missing or untrustworthy drawings
- Occupied floors where x-ray access below is impossible
- Renovations that must protect live electrical or plumbing
- Engineers who need thickness, cover, and bar spacing documented
- Industrial floors before equipment moves or trench drains
Have a hole to cut in Oklahoma?
Call Tommy's GPR. We scan across Oklahoma and can usually tell you how soon a tech can be on site.