GPR Customer Prerequisites

Completing the following tasks beforehand can help minimize the cost of your project by reducing billable time.

  • Inspect the ceilings for obstructions and lay out all the scan areas before the technician arrives
  • Remove any trash, heavy dirt and construction materials that are obstructing the scan areas
  • Consider alternative locations for penetrations in case the original scan areas don’t show a clear place to drill
  • If there are scanning areas on the ceiling, determine if customer-supplied scaffolding or aerial lift is required
  • Prior to the technician’s arrival, request a formal report and its specific requirements if necessary to ensure proper data collection
  • Confirm that penetrations in the slab will not exceed 12 inches. Otherwise, scanning both sides of the slab or X-ray may be required
  • Since water reflects radar signals and prevents marking the floor, make sure all scan areas are dry. Please note, newly-poured, “green” concrete can’t be scanned
  • High voltage conduits drawing currents are more easily detected than low voltage conduits. You should, therefore, turn on and activate all circuits if a conduit is located in the scan area
  • Ensure that roof penetrations are at least 3’x 3’ with no gravel and foam coverage
  • Understand both the capabilities and limitations of GPR technology

Other Questions We Ask

Below is a list of questions we will ask when scheduling. Knowing this information up front improves scanning efficiency and often results in cost savings.

  • What is the job name, job number, PO number, and billing and site contact?
  • Is the slab post-tension (pt), precast, conventional, pan deck, etc.?
  • What surface type are we scanning? Marble, plywood, raw concrete, tile, etc.?
  • How thick is this slab (in inches)?
  • Are there any known utilities in the concrete such as electric, fire alarm, walker ducts?
  • Is the work located on a roof or outdoors?
  • Does the job scope involve ceiling scans?
  • Is the scan area next to a duct shaft, drop pad/column, or stairway?
  • What is the age of the concrete?
  • Is a subcontract agreement necessary before work begins?
  • Is our insurance certificate acceptable to complete work for you and your client(s)?
  • Will any retention be held?
  • Will a lien release be required for payment?

Ready to get started?

Contact the Metro Concrete Scanning team today of highly skilled professionals to discuss your Ground Penetrating Radar (GPR) Scanning, Drill Spotting, Utility Locating and Concrete Imaging needs.

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