Time Flies while Scanning


GPRS was contacted by an environmental firm to search for utilities and other unknowns at an airport hangar in Milwaukee, WI. The purpose of this search was to clear locations where they were going to drill for soil sampling.

“Time is a primary currency traded on any given construction project. At Ground Penetrating Radar Systems, our everyday efficiency in operations allows us to respond to the immediate needs of our customers, often within 24 hours or less.” (gprsinc.com)

coverimage_Feb20182Scan before you plan! This ensures worker safety and saves valuable time by targeting specific areas of concern. GPRS can also provide GPS reports overlaid on Google Earth or overlay information on pre-existing CAD files for future building plans. This is all done in a safe, time-efficient, non-destructive manner.

GPRS assists by giving a real-time depth view of subsurface hazards such as reinforcing, utilities, conduit, underground storage tanks, voids, etc. This reduces the likelihood of subsurface obstruction strikes during core drilling, saw cutting, trenching, soil boring, directional drilling, anchoring, and other sub-surface applications.

Ground Penetrating Radar Systems uses the GSSI (Geophysical Survey Systems, Inc.) Sir-4000 technology in locating. GPRS also uses the RD-8100 Locator to locate live power and radio frequency (RF) signals underground. We can also detect utilities in or under concrete via induction or conduction with an exposed or known surface utility line.

GPRS does Utility Mark Out at the Jersey Shore

At an apartment complex located on the Jersey Shore, a contractor contacted GPRS to locate and mark on the surface all possible utilities on the property. The purpose of the utility markout was to identify all possible gas lines, water lines, communication lines and live electric. The contractor wanted to avoid all of these obstacles in order to ensure the safety for his crew when excavating. GPRS able to identify all subsurface utilities within the property and mark them accurately using ground penetrating radar, which is a safe and effective method for locating subsurface utilities.

For more information or a quote about a job in Philadelphia, New Jersey, and Delaware, contact Paul.Kulesza@gprsinc.com, or call (609)-350-9651, and visit our website at www.gprsinc.com

GPRS does Utility Locate at the Jersey Shore

Locating Underground Utilities

Ground Penetrating Radar Systems (GPRS) Inc. was contacted to locate underground utilities by an electric company that was planning to install additional site lighting at a residential facility.

For this job, the GPRS technician was tasked with scanning two 20’x10’ areas and two trench lines, 30’ and 200’ long, in order to locate any utility lines that were running through the work areas.

The contractor had been proactive and marked the scan areas prior to GPRS arrival and used the PA One Call service to locate the power and communications lines that were within the dig areas. With the “One Call” markings in place, the project manager had planned to start digging their 3 feet deep hole between the sidewalk and the cable line.  As is the case with many underground utility jobs, no one wants to believe that there will be anything that runs through their work area.  The GPRS technician began their work by first confirming the location and depths of the lines previously marked, supplying extra detail to the excavation crew.  Next, the technician confirmed the location of other lines that were in the area.  At this job location, it was noted that site lighting and water lines also could have passed through the area.  By using the ground penetrating radar and radio detection direct connect method, the technician was able to locate the site lighting wires and the water line, which both passed through the work area.  Due to this information, the dig location was relocated and the safe excavation of the area was completed.

For this job, GPRS was able to provide thorough and precise work that was effectively communicated to the contractor.   The high quality of work provided by GPRS ensured that the project was completed safely, and in a timely and cost-effective manner.

In construction, professionalism is everything, and completing your projects without incidents can make or break your bottom line. When you are excavating, it is important to have the utilities privately and publicly located. Utilizing GPRS for your project will help reduce injury, reduce lost productivity, and maintain incident-free professionalism that your clients demand.

GPRS uses the latest and greatest technology to locate power lines, fiber lines, water lines, UST’s, storm drains, and sewer drains under the surface. Utilizing GPRS on your project can help mitigate costly repairs, prevent severe injuries, and also maintain the integrity of your project.

Ground Penetrating Radar Systems of Pittsburgh is available to service the private utility locating and concrete scanning needs of Western Pennsylvania.

Locating Underground Utilities
(Field markings, indicating site lighting, electrical line, cable line and water line.)

GPRS Scans and Locates Electrical Bank

GPRS, Inc based in Tampa/St. Petersburg was called recently to a critical job site at a hospital.  The hospital was renovating an area that was ground level and needed to trench in new electrical lines for floor boxes.  Prior to saw-cutting the bottom floor trenches, someone suggested to have GPRS scan for anything in the cutting area.  The contractor decided to call GPRS to scan the area as a precaution.  Following the investigation, a large electrical bank was found to run directly under the saw-cut area and immediately beneath the concrete in some areas. The potential for cutting through this area without scanning could have been disastrous, risking injury to the saw-cut team as well as cutting power to parts of the facility.  GPRS was able to accurately and safely mark the location of the electrical bank using multiple pieces of equipment.  The original location was made with the EM pipe locator and the locations and depths were confirmed with the 1600 MHz ground penetrating radar antenna.

The image below shows the location of the proposed saw-cut area (red snapped line with clear coat) and the location of the electrical bank underneath with the depths indicated (red spray marking paint). As you can see on the far end, the concrete was 4-5 inches thick and the electrical bank was 5-8 inches in depth from the surface.  Once the cut was redesigned, the client verified GPRS’ findings on site and was able to work around the electrical bank to get the floor boxes where they were needed. If you would like similar work done in a facility, hospital or other building where there are concerns as to what lies below the surface, view our “Contact Us” page at www.gprsinc.com.

GPRS Scans and Locates Electrical Bank

Locating Conduits and Reinforcement on an Elevated Slab

Locating Conduits and Reinforcement on an Elevated SlabGround Penetrating Radar Systems of Kansas City was hired to analyze concrete on an elevated slab in downtown Kansas City. A historic building was being renovated and needed several cores to be drilled while avoiding conduits and any reinforcement to preserve the structural integrity of the building. The technician was able to determine the spacing and depth of the reinforcement for the client while also locating a conduit running through the slab.

GPR is essential for every company to use before drilling into concrete. Scanning the slab using GPRS services prevents costly repairs and dangerous accidents while giving clients solutions to their subsurface problems. Ground Penetrating Radar Systems of Kansas City can assist you on any projects in Kansas and Missouri. For more information about how we help you on your project, please contact Will Sizemore at will.sizemore@gprsinc.com or at (913) 335-4301.

Onsite at the Joint Airforce Base

Onsite at the Joint Airforce BaseGPRS was requested onsite at the Joint Airforce Base in North Charleston to perform a Ground Penetrating Radar (GPR) survey. The purpose of this survey was to help identify the location of any utilities or anomalies onsite in order to drill to install beams for awnings covering the fueling station on base. There were large junction boxes on both sides of the filling station with numerous conduits running in and out and the customer wanted to make sure they were not going to damage any of the existing utilities. GPRS was able to identify the location of the existing utilities and mark any other anomalies that may have been in the way prior to drilling. All the utilities that were located with GPR were able to be identified with the depth of the anomalies for the customer prior to boring. This was a huge asset and was able to save the customer valuable time and help prevent any possible damage to unknown utilities.

We used a GSSI (Geophysical Survey Systems, Inc) Ground Penetrating Radar Unit with one specific antenna. This device transmits an electromagnetic pulse through the ground and displays the reflection on a screen for interpretation. The 350 MHz antenna was used on this specific project to scan concrete surfaces as well as grass for utilities. This antenna allows for GPR signal penetration of 4’-6’ in depth. We also used radio detection on this project as a supplement to the GPR. This device detects live power and RF signals underground, allowing us to locate electrical or telephone lines even if they are below the minimum size requirements to be detected by GPR.  It also allows us to detect utilities via induction or conduction with an exposed or known surface of the conductive utility.

With the use of this equipment and the experience of GPRS, we were able to help the customer avoid any conflict before drilling to install beams for awnings. GPR was able to help the customer identify areas with potential hazards and save them from any more potential danger of cutting through any conduits that may have live power on them or damaging any other utilities. There are many applications where ground penetrating radar may be applicable.

As a new member of the GPRS family, allowing the ease of mind to our customers and giving them a guideline on what can be done to ensure safety and cost efficiency on their projects is an ever-rewarding experience. Whether it is scanning for utilities to avoid during soil borings, identifying rebar or post tension cables prior to drilling/cutting into a slab or anything in between we at GPRS have all your “Subsurface Scanning Solutions”.

ANDREW MARQUESIf you feel you may have a project that you could use our services on or may be able to benefit from GPR, you can reach out to me directly with my contact information below or visit our website at WWW.GPRSINC.COM

(803) 873-1653

Utility Locate in Dallas

Utility Locate in DallasGround Penetrating Radar Systems was contacted by a general contractor in Dallas, Texas to locate any underground utility lines that would obstruct a trench path to put in a new conduit that would be running through a very active job site.  The client was extremely concerned with hitting heavy electrical due to the active hospital surrounding the job site that could be shut down if a significant line was struck.  The electricians met Ground Penetrating Radar Systems on site and walked through the project details while marking out locations that needed to be cleared of any and all utilities.  GPRS was able to come out and successfully locate exactly where all of the utility lines were located, making this a quick and easy trench line to locate. This also helped the customer to progress their job site at a quicker rate because they felt confident enough to use heavy machinery to dig a faster and more efficient trench after GPRS’ locate.

Utility Locate in Dallas2Ground Penetrating Radar Systems used a 400 MHz antenna for this application and a Radio Detection (RD) device to detect electrical current deep in the soil.  All findings were marked with marking paint directly on the surface for easy interpretation by the customer.  GPRS’ 400 MHz antenna was ideal because of its accurate and deep penetration and the open clear area the technician had to work.  GPR was ideal for this application due to the active work site in the surrounding areas.  GPR emits no radiation and is safe for others to work in the area near the scan location.

For a similar scan on your job site please contact Adam Kubicki at 801-599-2115 or at adam.kubicki@gp-radar.com.  Sonar has also been performed to locate reinforcement such as post tension cables, rebar, wire mesh, pan decking high and low points, conduits and many other obstructions in concrete.  X-ray can be utilized in Arlington, Fort Worth, Corsicana, Carrollton, McKinney, Frisco and the remainder of the entire United States.  For a safer and more efficient dig on your next job site, or for a low risk cut/core drill on your next project, please call us and we can start your job.

Utility Locate After 811 Markout

GPRS Inc. of Southern California was called out to provide a utility location survey in a busy parking lot near downtown San Diego. The general contractor of the project set up 811, and had them mark out utilities (based on plans) one day prior. The main reason that the general contractor decided to hire a third party utility locating service was to add depths to all lines marked, as well as to act as a verification of the 811 markout to avoid any potential unforeseen abandoned or mismarked lines. GPRS was able to find multiple additional utilities onsite, including irrigation, as well as electrical and communication lines that were not shown on the map that the utility companies used to mark their utilities. Depths were also added to each utility previously located with 81l. The photo below shows a small portion of the survey, and shows gas lines, irrigation lines, main electrical and communication lines, as well as a sewer line.

Utility Locate After 811 Markout

The contractor that hired GPRS was planning to erect a new housing project, and it was critical to have depths and lines verified for their planning purposes. Private utility locating services with ground penetrating radar, coupled with 811 one call, as well as consulting existing utility drawings, insures that utilities are accurately found, along with depths, and can eliminate all unknown unseen anomalies on your project.

Utility Locate After 811 Markout 2

The utility map above is an example of a utility drawing that was provided to the customer after all utilities were marked onsite. GPRS can provide deliverables, which range from simple overlays (like the one shown above), to scaled AutoCAD drawings. All mapping options are tailored directly to the preference and need of the customer.

If you are in need of a free quote for any of our underground utility locating services (private or public), such as utility locating, underground storage tank locating, soil boring clearance, trench scanning, or EMI mapping in the San Diego Area, including North County, El Cajon, La Mesa, Chula Vista, Downtown San Diego, La Jolla, Encinitas, or San Clemente, please contact:James Petersen at (858) 395-1085 or at James.Petersen@gprsinc.com