Underground Utility Locating Methods Used at a Substation in Detroit MI Prior to Excavating

When excavating or drilling it is essential to know what underground utilities could be passing through the proposed areas. Not knowing these utilities could be in the area can result in serious injury & also cost the contractor more money in repairs, damages and delays anything damaged. These facts are multiplied when working inside an electrical substation complex.

A general contractor had a project on the inside of an electrical substation complex near Detroit, MI where they were going to be drilling to place a 90 foot high post into the ground. There were no as-built drawings of any existing underground utilities showing the paths prior to the drilling taking place. Ground Penetrating Radar Systems from the Detroit/Ann Arbor MI region was contacted to investigate the area to search for underground utilities. GPRS utilized ground penetrating radar & radio detection to scan the area. They marked numerous separate utilities passing directly through the proposed drilling location. Everything was marked directly on the surface, all findings were then communicated to the onsite personnel & then a hand drawn sketch with measurements was provided. The information provided by GPRS allowed the contractor to plan accordingly so no injuries occurred during the process & no underground utilities were compromised.



For all your sub surface locating needs in the Southeast Michigan region, contact Regional Manager, Thaddeus Bullock at Thaddeus.bullock@gp-radar.com or 734.377.4551.

Post Tension Cable Locating in Chicago High Rise

GPRS was contacted by a construction company to locate post tension cables in a high rise building in downtown Chicago. The customer needed to cut into the concrete slab on the outside of the building. The technician on site, Brian Cox, used GPR to locate and mark out the locations of the cables and communicated the findings to the client; they were then able to saw cut without damaging the structure or causing any delays to their project.

Ground Penetrating Radar Systems, Inc. is the nation’s largest company that specializes in detection of underground utilities and scanning of concrete structures. Our clients recognize GPRS as the premier service provider of GPR because we arrive with the best technology, trained technicians and a commitment to safety.

For more information or to schedule your next project in Northeast Illinois, including the Chicago and Rockford areas, call Brian Cox at 312.882.0429 or 815.218.1122 or email brian.cox@gp-radar.com. For a complete listing of our nationwide locations, visit www.gp-radar.com.

Post Tension Cable Locating in Chicago High Rise

Accurate Ground Penetrating Radar Services in Oklahoma City, OK

During renovation of an existing structure in downtown Oklahoma City, a general contractor needed to anchor new stairs into the existing columns and beams. Per the structural engineer’s request, no rebar was allowed to be damaged during the drilling process. Ground Penetrating Radar Services was requested to accurately map the existing steel within the structure. The GPRS technician marked the reinforcing steel directly onto the surface using crayon. Ground Penetrating Radar is a non-hazardous form of concrete x-ray that shows the data in real time. Due to the results being instantaneous, they are easily communicated and interpreted.

For rebar locating in Oklahoma: Oklahoma City, Midwest City, Bethany, Moore, Guthrie, Norman, Stillwater, Enid, Yukon, Shawnee and Edmond area call 405.815.7415 or email wade.vickers@gp-radar.com

For rebar locating in Lawton, Ardmore, Elk City, Guthrie, Kingfisher, Altus, Weatherford, Duncan, Durant, Broken Bow, Guymon, Woodward, and Clinton call 580.335.4355 or email mike.kuebbeler@gp-radar.com

For rebar locating in Tulsa, Bixby, Broken Arrow, Catoosa, Owasso, Sand Springs, Muskogee, Okmulgee, Jenks call 918.779.8323 or email jay.tate@gp-radar.com.


For over a decade, GPRS has been the industry leader by keeping projects on time, reducing safety risks and putting our relationship with our clients before profit. Please contact your local GPRS technician for questions, a fast quote or to schedule your next project. Go to www.gp-radar.com for a complete listing.

GPR Used to Locate Conduit and Reinforcement in Boulder, CO

Ground Penetrating Radar Systems, Inc. of Denver, CO was contacted by a contractor to locate conduit and reinforcement in a concrete slab at University of Colorado Boulder. The contractor needed to core drill into a concrete slab in several areas to install new plumbing for renovations in a building. The customer needed to avoid striking any reinforcement and conduit in the slab which could possibly jeopardize the structural integrity of the concrete slab and cause costly repairs or even injury if a live conduit was struck. GPRS, Inc. arrived on site and provided digital concrete imaging (Ground Penetrating Radar) for the customer, keeping the project on schedule without repairs or injuries.

GPR Used to Locate Conduit and Reinforcement in Boulder, CO

GPR is a great alternative to X-ray; as it does not require evacuation of the building because it does not emit radiation and is completely safe to be around. All data findings are marked directly on the surface at the customer’s request for the easiest interpretation of the scanning provided. With GPR there is no wait for developing films as with traditional x-ray and only one side of the slab is needed for scanning so time and resources are much more ideal for tight schedules of projects.

GPRS specializes in ground penetrating radar service and is our primary focus; we have the latest technology and experienced and highly trained technicians. GPRS also has a nationwide network of technicians in every major city and in Canada. GPRS, Inc. can supply your project with the safest and most accurate ground penetrating radar service in the business. Your safety and job effiency is our main goal at Ground Penetrating Radar Systems, Inc.

If you are interested in learning more about our services, to request a quote or to schedule your next project please contact Ryan Shannon (Project Manager) at 303.913.8630 or ryan.shannon@gp-radar.com. For a complete listing of our nationwide locations, visit our website at www.gp-radar.com.

Ground Penetrating Radar Used to Locate Reinforcing Steel in Las Vegas, NV

Ground Penetrating Radar Systems, Inc. of Las Vegas was contacted by a large general contractor to locate the reinforcing steel in a concrete slab prior to core drilling. GPRS was able to locate and mark the reinforcing steel onto the surface of the concrete so that the core drilling could be performed without cutting through them. Unlike conventional X-Ray, GPR is not limited to a specific size of area at each location.

Ground Penetrating Radar is a great tool to scan areas for post tension cables, rebar, and conduits, including PVC pipes and can also be used to locate underground utilities prior to digging or excavating. Please contact Ground Penetrating Radar Systems to learn how we can assist with your project. To locate rebar, post tension cables, voids, conduits, pipes or utilities in concrete or underground please contact us today.

GPRS has offices throughout the state of Nevada and providing services in many cities including Las Vegas, North Las Vegas, Henderson, Laughlin, Pahrump, Primm, Ely, Jean, Boulder City, Beatty, Fallon, Fernley, Hawthorne, Elko, and Tonopah. Please contact Chase Johnson at 702-573-9228 or Chase.johnson@gp-radar.com to learn more about ground penetrating radar and how GPRS can assist in your projects.

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GPRS Locates Utilities for Hospital in Charleston, SC

GPRS Locates Utilities for Hospital in Charleston, SC

A general construction company was in the beginning stages of constructing a new parking garage for one of the main hospitals in downtown Charleston South Carolina. They contacted GPRS to help locate utilities prior to drilling for foundation installations. Grid scans with the 400 MHz ground penetrating radar antenna were performed to identify and mark out all potential utilities within the proposed areas. GPRS also utilizes a radio detection device which helps in locating live electrical power and communication lines. Ground penetrating radar is an accurate and effective way to help locate underground utility lines or any other material that may be underground.

Jeremy Martin is the project manager for GPRS operations throughout the state of South Carolina. For more information, to receive a quote, or to schedule your next project please contact Jeremy at 843.312.6662 or by email at jeremy.martin@gp-radar.com. For a complete listing of our nationwide service, visit our website at www.gp-radar.com.

GPRS, Inc. Helps General Contractor in Orlando, FL Identify Safe Place to Saw Cut Slab

GPRS Identify Safe Place to Saw Cut Slab

This past month, a GPRS technician was called upon in Orlando, FL to quickly meet the needs of a large General Contractor. The company was working at an Orlando Hospital and needed to relocate an air conditioning unit on the second floor. The technician arrived on site and was able to accurately mark out the slab using their concrete scanning antenna to identify post-tension, rebar, and beams in the slab (seen above). This was helpful to the general contractor so they knew exactly where they were able to cut without the risk of injuring anyone while on site. The white lines represent rebar, while the orange lines represent post-tension cables.

If you or your company have any similar concrete scanning needs, please contact your local Central Florida technician, Derrick Thomas at 407-637-1832 or visit www.gp-radar.com for any other questions you may have.

GPRS Locates Post Tension in Slab on Grade

GPRS Locates Post Tension in Slab on Grade Post Tension in Slab on GradeA contractor needing to work underneath a slab on grade contacted Ground Penetrating Radar Systems of Washington D.C./Virginia to investigate. GPRS scanning aids contractors in reducing the likelihood of subsurface obstruction strikes during drilling, cutting, trenching, anchoring and other construction/demolition processes. GPRS, used GSSI Sir-3000 technology, to locate anomalies typical of Post-Tension cables in the slab. This information confirmed the contractor’s suspicion of the Post-Tension slab on grade. The on-site scanning and marking process was completed within a few short hours and the contractor was able to begin the project in a timely fashion and with valuable information of what to expect. This was all done in a safe, time efficient, non-destructive way. The radar emits radiation less than 1% of that found to be emitted by standard cell phones which eliminates the threat of hazardous radiation to operators or persons above or below the work zone.

GPRS is proud to provide quick response time and easy, convenient scheduling. If you need Post-Tension mapping in the Washington D.C., Reston, Fairfax, Arlington, Alexandria or surrounding areas please contact Jeremy Campbell at 571-481-7166 or at Jeremy.Campbell@GP-Radar.com. For a complete listing of our nationwide locations, please visit www.gp-radar.com.