For special concrete cutting situations, like hospitals we use our Hilti Concrete Scanner. This scanner uses Ground Penetrating Radar (GPR) to non destructively inspect concrete walls, slabs, and ground locations. Concrete scanning is one of the fastest growing segments in professional concrete cutting. Before any cutting is cut or cored, our scanner can find objects that could be a hazard if cut, thus reducing risk and unforeseen damage that lie in the concrete.
It can detect targets such as post tension cables, rebar, metallic and PVC pipe, conduit, and voids in up to 12″ of concrete. The concrete scanner can show objects in real time without relying on layout drawings that could be out of date. Although it’s not fool-proof, it provides an additional layer of protection.
Our technicians will scan areas in question in order to locate any and all visible targets and mark them on the surface of the wall or slab. Please consider that the purpose of GPR is to locate VISIBLE targets, it may not be possible to identify the target or determine its exact depth.
Clients Responsibilities for Concrete Slab and Wall locating
- Identify all areas to be imaged. Each area should be at least a 2’X2’ with 6” clearance on all sides.
- Locations to be imaged should be completely clear of all material, tools and equipment.
- Surfaces of the area to be imaged must be clear of all debris, (dirt, mud, drywall, wood, nails, et.).
- Surfaces of the area to be imaged should be dry (no standing water).
- Concrete to be imaged should be at least 1 month old, 6 to 12 months is ideal.
- Any plans, drawings, or other information pertaining to the areas to be imaged should be provided to our technicians before the imaging begins.
- There are limitations with a pan decking (corrugated decking slab) as we do not guarantee that nothing will be missed.
Please refer to the actual contract for all of the specifications related to concrete scanning.