GPRS South Florida – Locating Electrical Line at Brickell City Centre

Fusco photo

Not long ago, the GPRS team operating out of South Florida was contacted by a company who installs the equipment that is needed in order to wash windows on high rise buildings. This type of equipment is responsible for supporting up to two individuals, with their window cleaning equipment, as they clean the tallest of buildings. This project entailed the installation of very large anchor bolts around the roof of the Brickell City Centre, a high-end shopping mall that recently opened in downtown Miami. The problem they were faced with was the location of an electrical line previously installed around the perimeter of the roof (located fifty-two stories above the ground). Accidentally drilling into that line could have been extremely dangerous, and most likely fatal. They asked GPRS to come out onsite and locate the electrical line in question.

Scanning along the edge of a building over five hundred feet tall is not something that we get asked to do every day, but it is definitely something we are capable of. Safety is priority number one before we walk on to any job site, and even more so with a project such as this. There was no wall or railing around the perimeter of the roof, which meant that anyone on this section of the roof had to be wearing a personal fall arrest system and be tied off to an anchor point at all times. Our project manager (pictured below), did just that. As you can see from the picture below, he was walking along the very edge of the building and stayed tied off at all times. Using the Radiodetection 8100 (not pictured) he scanned the entire edge of the building searching for live power. He was able to identify the line in question which was located directly where the company planned on drilling for their anchor points. With the information our project manager was able to provide, this particular client was able to re-design how they would be anchoring to the building.

The project was completed safely, without incident and in a timely manner. This is just one example of how GPRS can be extremely helpful in not-so-average situations. If you have an upcoming project that you would like us to assist on, please don’t hesitate to contact us. You can visit the “contact us” page at or simply click here.

GPRS South Florida – Rebar Mapping at Hard Rock Stadium

Recently, the GPRS office, located in Miami Florida, was contacted by an electrical contractor that was completing a project at the Hard Rock Stadium located in Miami Gardens, Florida. This is also the home of the Miami Dolphins. This stadium recently underwent a five hundred-million-dollar renovation and work is continuing to be completed throughout the off-season at this facility. The GPRS team in South Florida has completed projects on this job site on several different occasions. This particular contractor was installing Wi-Fi hotspots throughout the stadium to help improve cell phone reception for its attendees. They contacted GPRS in order to locate any and all steel reinforcement in the areas that they planned on core drilling for their electrical conduits. It was very important to locate the steel within the slab in order to avoid compromising any of the structural integrity of the existing slab.

GPRS South Florida – Rebar Mapping at Hard Rock Stadium

For this particular project, the project manager pictured below is using GSSI’s (Geophysical Survey Systems, Inc.) SIR-3000, with their 1600 MHz antenna. With this equipment, he was able to identify the top and bottom layers of rebar located throughout the slab. A total of fifteen different areas were scanned, and steel was identified in each of these locations. With this information, the contractor was able to drill directly through the slab without damaging any of the reinforcement within the slab. In this particular case, no conduits were found to be within the areas scanned but this is oftentimes not the case. Our project managers are equipped with the knowledge and experience to identify any form of reinforcement within various concrete slabs, whether that be pan deck, rebar, post-tension cables or wire mesh. The use of our service can be applicable to many different types of projects.

Upon project completion, the company that contacted us for this project was extremely pleased with the result. Through effective communication and GPR knowledge, this project was completed without any issues. If you have an upcoming project that you would like us to assist on, please don’t hesitate to contact us. You can visit the “contact us” page at or simply click here.

Private Utility Locate at Power Plant – Crystal River, FL


Ground Penetrating Radar Systems, Inc. (GPRS) was contacted by a construction company in order to locate utilities at a power plant in Crystal River, FL. The construction company needed utilities located, marked out on the surface with paint, flags, and a depth. After marking out all utilities, the contractor needed all findings put into a cad map file for the company to have on file. The contractor contacted GPRS of Tampa to perform the GPR and GPS mapping needed for this project. The contractor needed this project completed in order to be able to expand their operations area.

A GPRS technician was contacted in order to perform the survey at this location. Using our 400MHz antenna and RD7000 radar equipment, we scanned each area of concern. We were able to map out all needed buried utilities. All located utilities were marked with paint, flags and a depth to the top of the anomaly directly on the surface. After all areas of concern were located and marked out, the findings were clearly relayed to the onsite contact. The contractor was pleased with our results and felt relieved to know where the utilities were located, and at what depth each utility was prior to excavating.

Upon arriving onsite, the technician met with the contractor and went over the areas of concern that needed utilities located. Each area was scanned in a north/south, east/west pattern with the RD7000 for any power or communications. The GPR 400MHz antenna was used to scan each area in a north/south, east/west pattern to locate the exact location and depth of the utility. All located utilities were marked out with paint, flags and a depth. Each utility was color coded accordingly. Red-power, Orange-communications, Blue-water, Yellow-gas, Green-storm/sewer, White-unknown utility. We used our Trimble Global Positioning System, (GPS) technology to locate the coordinates of each located utility. We then took this information and put it on a cad map file for the contractor.

Locating Existing Utilities in Advance of Directional Bore

Locating Existing Utilities in Advance of Directional Bore (Florida)We at Ground Penetrating Radar Systems, Inc. were recently called out to a sprawling jobsite in central Florida to locate existing utilities in advance of directional bore.  Four separate borings were planned by our customer to run several electrical conduit lines throughout the property.  Unlike laying new utilities in a trench, a directional bore drills through the ground with no visual confirmation of existing utilities that are being passed over or under by the bore.  That is where GPRS comes in.  Using both our 400MHz radar antenna and our RD8100 Radio detection wand, we scanned the entire area along the proposed route of the directional bores.  These tools allow our technicians to determine both the location and the depth of any utilities the bore path might cross.  Accurate depth detection is crucial for directional boring jobs, because it allows our customers to determine the depth of the bore at every point along their proposed path, allowing them to avoid hitting existing utilities.

On this particular job, the depth of existing utilities rose and fell constantly due to the uneven and constantly changing terrain.  The versatility of the cart used to house our 400MHz antenna was well suited for this task.  We were able to orient the radar over existing lines as mounds of dirt rose and fell along the scope of the scan.  Being able to pinpoint these depths gave our customer the information needed to plan their directional borings.  The path including the sloping terrain mentioned above, as well as multiple street crossings, including an intersection.  Street lighting, water lines, sanitary lines, communication lines, and gas lines were all found and marked per the customer’s request.  Utilities that were expected, as well as some that were completely unanticipated were located and mapped.  The sheer number of existing utilities under the property were a testament to the value of quality GPR work in such situations.

Hitting existing utilities can be dangerous and costly, and we at GPRS pride ourselves in providing the best information possible to our customers prior to digging, trenching, boring, coring, or any other needs that require subsurface locating.

Locating Water Leaks at an Orlando Theme Park

Orlando has many theme parks. One of those theme parks had a large water pipe running near a pool area that had a leak. They were able to locate the leak and repair it. However, due to the water leakage, they were worried there could possibly be a large void underneath the pool area which can be problematic for the structural integrity of the pool. The renovation team hired to correct the issue knew that GPRS would be able to assist in detecting the possible voided area underneath the pool.

To correct the issue, the repair team would need to drill and then inject material in several locations to fill the void under the pool. The team was also aware of the possibility that there could be utilities running directly underneath the pool deck. Water and electrical lines could very well be right underneath the pool making the team hesitant to simply drill through the deck to inject the corrective material. GPRS was able to scan the concrete pool deck and give the team knowledge of where the void was and how wide it was in all directions. After locating the void area, the scan technician then proceeded to mark out all of the structural steel and possible utilities. To preserve the aesthetics of the pool, lumber crayons were used which would wash away days after the scanning was completed. A report was provided to the company including data shots and photos outlining the details of the findings. Several days after the void was located, the company mapped out their injection points and was able to correct the issue without additional damage to the pool or utilities.

The picture below is Nate Schmoe, of GPRS, Inc. scanning the pool deck slab surface.

If you would like to receive a proposal for similar work please visit the “Contact-Us” page at

Orlando FL

GPRS Project-Melbourne FL

Post tension cables, electrical conduits, rebar and other structural steel, water pipes and various other objects are often found in concrete slabs. Construction companies, plumbing contractors, electrical contractors and renovation specialists are always in need of either core drilling through a slab or trenching through a slab on grade. Whatever the case may be, Ground Penetrating Radar Systems has an expert level of understanding when it comes to the need to “x-ray” or radar before you go penetrating a concrete slab.

In Melbourne, FL there are constantly needs arising when it comes to this. A local plumbing contractor was tasked with relocating some existing plumbing lines. Having used GPRS a time or two before, they felt confident the professionals there would be able to give them the attention needed to get through the slab without cutting anything critical and that they could locate the plumbing lines to be moved.

GPRS showed up on site and used the 1600 MHz and 400 MHz antennas to scan the floor. The professional on site scanned the entire area in a grid pattern to assure that there was no mistaking the location of the plumbing. Contractors only like to cut through a slab once if they can help it.  After mapping out the areas, the GPRS professional used markers to indicate where the plumbing was located. These findings were then relayed to the site contact to ensure all information was accurately communicated. The client was able to penetrate, cut and trench in the areas scanned without hitting or cutting any electrical conduits or critical structural steel. The client expressed gratitude on the quick turn-around time and skill the technician brought to the project. Clients who use GPRS know they are getting the highest level of service when using our product.

You will see a picture below depicting Nate Schmoe, of GPRS, Inc. scanning the slab on grade surface.

If you would like to receive a proposal for similar work please visit the “Contact-Us” page at

GPRS Project-Melbourne FL

Aiding Construction at the Orlando International Airport

In the construction industry there are waves of development, especially in Orlando, FL. The Orlando International Airport is currently constructing a new south terminal. This requires a lot of planning with companies, contractors, engineers and so on. One of the head companies that is spearheading this project coordinates all of the contractors to keep things running smooth.

The project manager of this company recognized the needs of several of the contractors for ground penetrating radar or GPR work for some of the projects going on in the new terminal. One contractor needed to have pillars scanned to avoid hitting rebar when setting anchors for support beams. Another contractor needed to core drill holes for plumbing. The last one needed to install a metal structure and needed to drill into the foundation and did not want to hit rebar. The project manager recognized all of the needs for x-ray and called their GPR professionals at Ground Penetrating Radar Systems.

Once on site, the GPRS professional used their 1600MHz antenna, specifically designed to provide high resolution concrete images of the precise location of any rebar, post tension cables and electrical conduits.  Ground penetrating radar is an effective and efficient tool for accomplishing these goals. The use of a palm was also utilized. A palm antenna is an attachment the professionals use to reach overhead, scan walls or reach into tight areas. After the day was spent, the GPRS professional had the areas mapped out on the surface of the concrete. In some areas, permanent markers were used to avoid having the markings wash away in the rain. The other sensitive areas were marked with lumber crayons. Once the marking was complete, the ground penetrating radar specialist took time to explain the results so the contact would know exactly where to drill.  This ensured that the building did not face any structural damage and, more importantly, that the contractor was safe during the cutting process.  All parties were pleased with the results and the holes were drilled without incident.

You will see a picture below depicting Nate Schmoe, of GPRS, Inc. scanning the concrete surface.
If you would like to receive a proposal for similar work, please visit the “Contact-Us” page at

International Drive

Orlando has its fair share of resorts, hotels and theme parks. A new hotel is being constructed on International Drive. After finishing the exterior construction and beginning all of the interior work, the contractors were faced with having to add some additional lines into the facility that were not initially planned for. This involved them core drilling through CMU block walls. The engineers were concerned they would cut through too much structural steel in the process. So in order to avoid hitting anything when drilling, they got in contact with Ground Penetrating Radar Systems.

When scanning overhead or on walls, it can be cumbersome and slow to try and use the standard issue 1600MHz antenna. In order to be able to move more quickly and be able to scan in some tighter areas, the GPRS professional assigned to the job used a “palm” antenna which is specifically designed for this. This antenna can scan closer to walls and is ideal when scanning beams and columns.

After arriving on-site, the GPRS professional was able to scan all necessary areas and mark out the rebar layout on the surface of the walls. This enables the contractor to assess the best locations for their core drills to avoid contact with structural steel and keep the engineers happy. Upon completion of the job, the findings were explained to the site contact, at which point, the contractors requested a report to show the engineers and have proof of the locations for their records. The contractor was able to drill all necessary holes without affecting the structural steel in the walls.

You will see a picture below depicting Nate Schmoe, of GPRS, Inc. scanning the CMU block wall surface.

If you would like to receive a proposal for similar work, please visit the “Contact-Us” page at
International Drive

GPRS Called to an “Explosive” Jobsite in Northern Florida

Jobsite in Northern FloridaWe at GPRS were recently called to a job site north Florida near a state university.  The customer was breaking ground on a city block in order to build a large student housing complex.  While moving dirt to level out the impending foundation, the project manager noticed something sticking out of a pile of recently turned earth.  The cylindrical shape, rounded nose, and four symmetrical tail fins left little doubt that they had unearthed a bomb.  The job site was immediately shut down.  The project manager called the local fire department which in turned notified the bomb squad.  With a little research, he was able to confirm that he had found a WWII era aerial bomb on his hand, and a few questions about his new job site.  That evening the bomb squad strapped some C4 to the bomb and executed a controlled detonation after lowering the bomb into a hole dug out on site for that very purpose.

His next call was to Ground Penetrating Radar Systems.

Arriving the next morning, we were informed that the job site had no military history.  It was a coal depot with a train track running through it in the 40’s and 50’s.  Never-the-less, our job was to locate any additional “ordinances” that might still be buried on the grounds.  Due to the relatively small size of the target anomalies, we would have to run our 400MHz antenna over the entire multi-acre site on a very small grid.  The pattern would only allow for about 12 inches between scans if we were to have a reasonable chance of locating an item the size of that which we were looking for.  After beginning the grid in the area of the site that produced the bomb, several small items in the first 3 to 5 feet of earth were found.  These were carefully dug up by hand to identify.  Pipes, crates, bottles, and other assorted debris were found, but to the relief of our customer, we were unable to locate any additional bombs.  It turned out that the worrisome item they found was buried, decades ago, in what was essentially a pile of junk…not a stash of explosives.

Although the early indications were positive for our customer, we spent the entire day scanning the lot on the afore-mentioned tight grid.  Nothing alarming was found and the job site was back in operation the next day.  In addition to locating utilities, jobs like this one demonstrate the versatility that our technology, and highly trained technicians, are able to employ to further serve our customers.

Please contact Tony Valenti at (407)246-9900 or for any scanning needs that you may have.