Ground Penetrating Radar Systems (GPRS) was requested to perform a Ground Penetrating Radar (GPR) service on site. The purpose of this project was to locate any existing utilities that may be present in the designated area. As a supplement to GPR, we also used radio detection (RD) to help identify live power, communication and other utilities that may have a power signal on them. Once the utilities in the path were identified they were marked directly on the surface so the customer could clearly see where the utilities were located. After all the utilities were located on this project, the customer brought in a drilling rig to take soil samples of the ground. Because GPRS was available onsite to help identify any anomalies that may be present, the customer was able to drill on the site without striking any existing utilities that may be present.

We used a GSSI (Geophysical Survey Systems, Inc.) 400 MHz antenna in combination with the RD equipment. This antenna in NC/SC ranges in depths of up to 6’. When scanning with a GPR utility antenna, we take many variables into consideration to make sure that we are collecting the best data possible when running our scans. For this specific application the customer was planning on drilling vertically into the ground around 25’-50’ depending on resistance.

The best equipment in the industry, in the hands of a highly trained GPRS technician gave the client confidence to drill or excavate without incident. GPRS also specializes in concrete scanning for post tension cables, scanning for conduits in a concrete slab prior to core drilling or just helping identify the structural properties that may be present in an existing concrete wall or slab.

For more information, to request a quote or to schedule GPRS for your next project, contact Curtis Hoag

Ground Penetrating Radar Systems (GPRS) was contacted by a superintendent who needed GPR services immediately.  Project Manager Josiah Donaldson brought another technician and they were able to get to the site that evening.  The two of them were able to scan 53 – 2’x2’areas while core drillers stood by waiting to drill. GPRS uses the best equipment in the industry and all of our technicians are highly trained and experienced.  No job is too big or too small and we can accommodate your needs, even with a short notice.

A large scale construction company was constructing a multi-story post tension high rise. After much of the concrete work had been finished their client decided to make several changes to the scope of work which required the company to make several penetrations through the concrete slab on the 16^th floor. Per project requirements and in an effort to ensure job site safety and structural integrity, the contractor desired to have the areas scanned and located for embedded objects before proceeding with core drilling.  Contacting Ground Penetrating Radar Systems (GPRS) to inspect and scan the elevated concrete slab beforehand has become standard protocol for this type of work. GPRS was able to quickly coordinate, schedule and have a project manager onsite within 48 hours.

GPRS utilized their GSSI 1600MHz antenna and StructureScan Mini to analyze the concrete and locate the post tension cables prior to core drilling. The 16 holes they needed to drill were scanned within a few hours and markings were written on the surface of the concrete. The technician documented the findings so that the client had a permanent record for future reference. Several contractors on site heard that GPRS was scanning at this location and they quickly sought out Nate Schmoe from GPRS to book GPR services for their project. After the scanning was completed on the current project, GPRS was able to coordinate with the other contractors and get them on the schedule.

Whether core drilling, saw cutting or trenching through concrete, GPRS uses the most current radar technologies to ensure the most accurate results.  It is GPRS’ goal to provide the highest level of locating service for the purpose of locating embedded objects in concrete and/or locating underground utilities.

Ground Penetrating Radar Systems-Oklahoma works extensively with windfarm construction contractors and other companies. Prior to the installation/construction of wind turbines and electrical collection lines, Jay Tate, Mike Kuebbeler, Andy Dermer and Josh Henes were contacted to locate underground utilities within the proposed turbine sites and electrical collection line paths in Tuttle, Oklahoma. Multiple underground utilities were located using Ground Penetrating Radar and the Radio Detection Device. Since GPR shows data in real time, the results were communicated to the customer with the location and depths shown using pin flags & wooden stakes. With GPS mapping capabilities, GPRS was able to provide a detailed map to the client of all the findings conducted during the GPR survey. Using GPRS reduces risk and cost, promotes a safe work environment, and provides non-destructive testing by locating materials such as concrete, plastic, metal, steel, rock, soil, ice, and pavement.

GPRS is a nationwide company with technicians in every major city in the US and in Canada.  GPRS-Oklahoma Team has more than 15 years of field experience to assist your company on your next project, to prevent the potential of a dangerous or costly utility strike.

Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted by a general contractor in downtown Milwaukee to scan for post tension cables in a 10” thick slab. GPRS was informed the contractor used another company at the site and a bundle of cables were hit during the coring process causing thousands of dollars in damages, delaying the project and putting workers at risk. GPRS was able to get to the site and identify the critical targets for the contractor and over 30 core locations were cored without hitting any post tension cables or rebar. The contractor then requested GPRS to provide a 30 minute lunch presentation to the workers on site to discuss safety and how we can assist them whenever digging, coring, cutting, or excavating occurs.

Ground penetrating radar is a great tool to scan areas for utilities, UST’s, voids, and other unknown obstacles on your site. GPR is also great for mapping post tension cables, rebar, and conduits, including PVC pipes. GPRS has an arsenal of tools that can be used for your specific project and now includes sewer camera inspection.

Ground Penetrating Radar Systems, Inc. was contacted by a large electrical contractor in Seattle to locate and map out rebar, post tension cables, and conduit prior to core drilling. We were asked to scan over 300 locations on this specific project. Ground Penetrating Radar Systems, Inc. used a 2000 MHz GPR (Ground Penetrating Radar) antenna as well as a 1600 MHz antenna to perform the survey. The findings were marked directly on the surface with black marker as seen in the picture above.  As you can see in this picture we were able to mark the top and bottom rebar as well as a conduit that is running through the middle of the proposed area. On this project we worked with the customer to find areas in which they could core without hitting any reinforcement or conduit. This meant that for one core we may have needed to scan two or three different areas. GPRS provided the contractor with the confidence and knowledge to continue with their equipment design.

GPRS uses the latest ground penetrating technology to provide critical information on utilities, materials, and other potential obstructions within existing structures or underground. Utilizing GPR reduces risk and cost, promotes a safe work environment, and provides non-destructive testing by locating materials such as concrete, plastic, metal, steel, rock, soil, ice, and pavement. Our client base includes hospitals, universities,

engineers, homeowners, contractors, environmentalists, and excavators. We also use GPR to locate rebar, post tension cables, conduits, voids, underground utilities, and UST’s. GPRS has been in business for over 15 years. We continue to set the industry on performing GPR surveys.