Past Project Archive
Featured Concrete Scanning Story
Structural Reinforcement Located by GPRS, LLC
A general contractor was core drilling (6) holes with various diameters in York, PA. Prior to drilling, the structural engineer required minimal reinforcement compromised during the process (particularly the vertical bar). The concrete wall was approximately 10 inches thick with two layers of reinforcement. The contractor reached out to Ground Penetrating Radar Systems, LLC to scan the (6) hole locations.
Featured Utility Locating Story
Private Utility Lines Located at Site Tower
A client was replacing the grounding grid within a site tower. This job site took place north of Harrisburg in Northumberland, PA. Prior to excavation, it was crucial that all utilities were located to reduce any risk at the tower. The client reached out to Ground Penetrating Radar Systems, who specializes in underground utility locating. Sam Hart, who covers the Central Pennsylvania area for GPRS, was the technician on site who was able assist the client with this project.
Ground Penetrating Radar was recently contracted to locate utilities at a US Steel site for installation of new fire water lines throughout the plant. The project was a multistage contract with approximately 5,000 feet of fire water line installed.
GPRS was given the task of locating all underground utilities and other items along the trenching path. With all of the vital lines for the production and safety of the plant underground,...more
In March of 2020, Sam Hart of Ground Penetrating Radar System (GPRS) was contacted by a mechanical contractor to help with an on-going project at a health care facility in a Harrisburg, PA. The slab was approx. 4-5 inches thick with metal decking supporting the slab. The contractor was looking to see if the steel beams had sheer studs holding the decking and slab in place. The two beams were approximately 25’ long. GPRS went down to the...more
Ground Penetrating Radar Systems, Inc. (GPRS) was recently hired by a local contractor to utility scan various locations within Bruce Mansfield power plant for new utility pole installations. Each pole was to be set in place to run overhead electric lines for the plant. The scope of work was to scan 10’ x 10’ areas around each potential boring location. The client had already marked each location and the client performed a site walk down...more
Ground Penetrating Radar Systems was recently contracted to complete a full site investigation prior to excavation at a residence complex in Pittsburgh, PA.
GPRS was tasked by the contractor with locating any underground utility on site such as electric, communication, gas, storm, sanitary and water. We provide our locating services for both public and private properties. We provided the location of each utility with as much accuracy...more
A large engineering firm recently contacted the GPRS SE Pennsylvania office. Their goal was to locate all locatable utilities within a region of West Chester ahead of a planned installation of new duct banks. Additionally, the client requested that all data be collected with a Geode GPS probe and turned into a non-survey grade CAD report. The width of the scope was on average about 60 feet. An overall length of road of approximately 0.75...more
Our client had called Ground Penetrating Radar System to scan a concrete wall for reinforcing prior to core drilling in Philadelphia, PA. The client was extending a section of the roof and needed to core drill for utility access. The goal for GPRS was to locate and provide site markings of the rebar within the wall. The client had contacted the project manager for the Eastern Pennsylvania, Delaware, and Southern New Jersey area, Grant...more
GPRS was called by a general contractor to scan a slab on grade pad in a utility room for saw cutting and trenching for a new drain. When we arrived on site, the plumber was eager to start saw cutting and was certain that there would be nothing in the slab that would be hit.
During the initial site walk we noticed quite a few conduits running from wall mounted breaker boxes into the slab. There were some in the room where the saw...more
Ground Penetrating Radar Systems (GPRS) was contacted by Clayco, Inc (a Construction Engineering Company) regarding the 4th phase of the East Hall’s demo and renovation project in State College, Pennsylvania. This phase entailed renovating Sproul Hall (10 floors) and Geary Hall (7 floors) at Penn State University. The renovation would include running new electrical conduit and plumbing from the basement up...more
Ground Penetrating Radar Systems (GPRS) was recently called out to a project by an environmental company to locate underground utilities for a project on a 60+ acre lot inside of an active coal mine. The scope of the project was to locate any and all underground utilities for almost 50 soil boring sample locations to be drilled down 25+ feet. By using GPR and Radio Detection, GPRS was able to safely clear each specific location of any...more
Ground Penetrating Radar Systems was recently called out to a project by a general contractor in Finley, Pa. The scope of work was to locate any underground utilities over a 6 mile stretch in the mountains of Finley, PA. The contractor needed to excavate 6 miles of land and dig a trench of equal length for a gas pipeline being installed. By using GPR, Radio Detection, and the duct hunter we were able to locate multiple lines such as gas,...more
Ground Penetrating Radar Systems (GPRS) was requested on site by a general contractor to perform a Ground Penetrating Radar (GPR) survey in downtown Pittsburgh. GPRS was called out to determine the locations of structural beams underneath the sidewalk. Prior to GPRS’s arrival on site the contractor was removing portions of the concrete slab when structural beams were struck during saw cutting. With a comprehensive GPR scanning of the area,...more
Ground Penetrating Radar Systems was recently called out to a project by a general contractor to locate rebar in a column and elevated slab for core drilling. This project is located in the city of Pittsburgh, PA. By using GPR location, spacing and depth of reinforcement was found and recorded on site for contractor. Painters tape was used for a clean look on a finished surface so it could be removed cleanly after work is complete. GPR is an...more
Ground Penetrating Radar Systems was recently called out to a project by a general contractor to locate grounding and conduits in a substation facility. The scope of work was to locate any grounding or conduits within a 400’ path that needs to be trenched for the installation of new conduits. By using GPR and Radio Detection GPRS successfully located and marked with paint all grounding and conduits within or crossing the trench path. GPR...more
Ground Penetrating Radar Systems was recently called out to a project by a general contractor to locate utilities for a project at UPMC ballpark. The scope of the project was to locate any underground utilities for a new playing field to be installed after a bulldozer takes out the existing surface of the entire baseball field. By using GPR and Radio Detection, many utilities were located. Electric, communication, data, and drainage systems...more
A general contractor called Ground Penetrating Radar Systems Central Pennsylvania Office to locate conduits prior to saw cutting. Upon arrival at the site, we were instructed that the contractor would be doing approximately 1000’ square feet of saw cutting on this project and wanted to avoid any conduits embedded in the slab. With the use of the latest in Ground Penetrating Radar Technology and Radio Detection, GPRS is able to locate both...more
Ground Penetrating Radar Systems, LLC. was contacted by an engineering firm located in Western Pennsylvania to locate underground utilities for an expansion project at a high school in the Pittsburgh area.
Ground Penetrating Radar (GPR) along with radio detection and direct connect methods were used to locate known and unknown utilities across the proposed construction area. The location of powerlines was determined by radio detection...more
GPRS Pennsylvania was called when a tractor trailer fell through part of the asphalt on a heavily traveled road at an Engineering Firm in Norristown, PA. No one was injured, but the firm wanted to ensure the safety of all their employees when traveling to and from work. They needed to ensure there were no more voids in the asphalt on their campus. GPRS was able to come out and scan their 3 mile campus for any other possible voids in the...more
A local mom-and-pop restaurant called up GPRS to inquire about a possible underground storage tank on its property before putting it on the market. They needed to clear the land of any possible tanks so the bank could clear any environmental road blocks that could stand in the way for the buyers of the property. In this matter, truth is the only ally. To not accurately depict all of the property's contents could end in a...more
A structural engineer was looking to install a large piece of equipment on an existing slab. Unfortunately, this building was roughly 100 years old and there were no records to indicate the slab thickness or amount or reinforcement in the slab. They were also concerned with any shallow utilities that may be beneath the slab. This project was located in York, PA. The contractor reached out to Ground Penetrating Radar Systems, LLC to scan the...more
A university in Philadelphia was making some updates to one of their buildings, and among these renovations is an entirely new elevated floor. Structural engineers decided that they could not have the integrity of the building compromised when anchoring the brackets to the walls and pillars; so the contractor decided to call GPRS to locate the rebar prior to drilling. Daniel Slachta of Southern New Jersey and the Tri State area responded...more
Before saw cutting into an elevated slab in Wilmington, Delaware, the contractor wanted to identify the location of rebar to ensure the reinforcing was adequate. The contractor did want to saw cut through any rebar because it could have compromised the integrity of the structural support of the slab. Therefore, GPRS was called to identify and mark the locations of the rebar. GPRS was able to map out rebar location and efficiently and...more
A general contractor needed to locate utilities prior to excavating. The contractor was looking to add an extension to existing building. The client knew there were utilities in the area, so they wanted to know exact location and depth prior to digging. The contractor reached out to Sam Hart, who is a technician for Ground Penetrating Radar Systems (GPRS). Ground Penetrating Radar Systems is experienced in locating private...more
A general contractor was core drilling (6) holes with various diameters in York, PA. Prior to drilling, the structural engineer required minimal reinforcement compromised during the process (particularly the vertical bar). The concrete wall was approximately 10 inches thick with two layers of reinforcement. The contractor reached out to Ground Penetrating Radar Systems, LLC to scan the (6) hole locations. To the client’s surprise, GPRS was...more
A client reached out to Ground Penetrating Radar Systems for assistance in locating a buried foundation wall at a historical site. The site was located in Central Pennsylvania and dated back to the 1700’s. According to the client, the town was founded in the mid 1700’s, while the oldest building was dated in the late 1700’s. This raised suspicion with the client, because if the founding date of approximately 1750 was correct, then the founder...more
A client was replacing the grounding grid within a site tower. This job site took place north of Harrisburg in Northumberland, PA. Prior to excavation, it was crucial that all utilities were located to reduce any risk at the tower. The client reached out to Ground Penetrating Radar Systems, who specializes in underground utility locating. Sam Hart, who covers the Central Pennsylvania area for GPRS, was the technician on site who was...more
GPRS was subpoenaed to the Harrisburg Juvenile Courthouse renovation project to investigate post-tension cables allegedly in the slab before coring. Post-tension cables are serious business when cutting the concrete, creating thousands of dollars of repair costs if struck, let alone the risk of major employee safety repercussions. When we arrived, ten coring locations needed evidence to free or indict the ostensible cables. After...more
A general contractor was looking to sawcut multiple areas of a mechanical room prior to demolition. The contractor knew there were conduits beneath the slab, but they didn’t know where and how deep. The contractor reached out to GPRS to scan all areas prior to saw cutting. In this picture, there are multiple conduits in the slab ranging from 4-6 inches, as well as larger conduits below the slab at 7-9 inches deep. The slab was determined to...more
A client was looking to install a large tent for a major event coming up within the next week. This job took place in the Lancaster-Lebanon area. A client was looking to have all private utilities located within the area to avoid any utility strikes during the installation process. This property was used multiple times a week for events, so the work had to be completed on Sunday. The client reached out to Ground Penetrating Radar...more
Recently, Ground Penetrating Radar Systems was called to investigate the sub grade beneath a dorm hall on the Penn State University at Erie campus for voids. Within the last year the customer made some extensive repairs in various locations to the foundation due to voids existing beneath the buildings slab. They called GPRS to come in and verify if any voids were still present. We were able to extensively scan the areas of concern and...more
At a residential property located in Scranton, Pennsylvania, a Realtor and their client contacted GPRS to conduct a ground penetrating radar scan of a property to locate a possible underground storage tank (UST). The realtor’s client was told the UST had been removed, but they wanted to have area scanned to be sure of this. GPRS was able to perform the scans in a timely manner, and locate a UST (which was marked on the surface in colored...more
When a contractor wanted to investigate if any buried USTs or other objects were present at the site, they called GPRS, LLC. We used a GPR 400 MHz antenna to scan the area. The customer was during the survey notified of our newly acquired GSSI Profiler EMP-400, and agreed to use it on the next project with the same objective to aid the GPR survey.more
An environmental firm was looking to drill 5 soil borings to check the soil for any contamination. An underground storage tank had been suspected to be on the property, which could lead to potential contamination. The environmental firm wanted to locate the storage tank and drill around the potentially contaminated area. Also, they needed to verify there weren’t any utilities where they were drilling. They called Ground Penetrating Radar...more
Before placing heavy equipment a contractor wanted to investigate reinforcement type and if any buried conduits and utilities were present beneath or within the concrete slab at the site, they called GPRS, LLC. We used the GPR 1600MHz antenna to scan the area. GPRS was able to locate and determine the reinforcement type, and also the conduits and utilities depth and location, and mark them on the surface.
For GPR projects or...more
A General Contractor called Ground Penetrating Radar Systems to locate a 480 Volt electrical line before saw cutting in Lancaster, PA. The General Contractor was replacing the entire concrete slab, which was approximately a 200’ x 100’ area. They hired Ground Penetrating Radar Systems, who specializes in locating anything subsurface. Sam Hart was the technician hired to complete this task. He was able to scan the concrete to verify...more
When a contractor wanted to investigate if any Underground Storage Tanks (USTs) were present at the site that had documentation of all USTs being removed, they called GPRS, LLC. We used the newly acquired GSSI Profiler EMP-400 and a GPR 400 MHz antenna to scan the area. The Profiler EMP-400 is powerful electromagnetic induction tool. It is a frequency domain profiling system. The profilers wide range of frequency selections allow it to be...more
At an experimental station located in Wilmington, Delaware, a contractor contacted GPRS to locate and mark out all of the conduits that were located within an elevated slab. During the scan, GPRS was able to detect a beam located below the elevated slab that was directly in line with the contractors coring locations, and the steel beams were marked in blue painter's tape and the contractor relocated their cores based upon the findings....more
A contractor contacted GPRS to conduct several ground penetrating radar scans of a warehouse floor to ensure the concrete depth was sufficient in areas where heavy loads of copper piping were located. As the scans were performed, the depth of the concrete was written on the surface in marking paint so the client could review all of the findings. GPRS was able to perform the scans in a timely manner and found multiple locates were the concrete...more
Before core drilling into an elevated slab in Philadelphia, Pennsylvania, a contractor wanted to identify the location of rebar. The contractor did not want to core through any reinforcing because it could have compromised the integrity of the structural support of the slab. Therefore, GPRS was called to identify and mark the locations of the rebar. GPRS was able to map out rebar location efficiently and accurately using ground penetrating...more
A client was excavating two separate trenches at a substation in Middletown, PA. The proposed trenches were approximately 300 linear feet by 4 foot wide. Prior to excavating, it was crucial that all utilities were located in the area. The client’s main concern was the amount of electrical conduits and duct banks located within the substation. The client reached out to Ground Penetrating Radar Systems, who specializes in underground utility...more
A general contractor needed to core drill 365 holes for a large renovation project in State College, PA. The engineers enforced the importance of avoiding any rebar when penetrating the concrete slab due to the structural integrity of the building. The General Contractor called Ground Penetrating Radar Systems (GPRS), who he has worked with multiple times beforehand to help with their project.
A general contractor needed to locate utilities prior to excavating. Although the contractor was fairly certain there were no major utilities in the area, it was better to double check to make sure. The contractor was preparing to excavate approximately 100 linear feet within an electrical substation in Three Springs, PA near Shade Gap. The client reached out to Ground Penetrating Radar Systems, who specializes in underground utility...more
The pictures you see to the right are from a local attraction in Orlando, FL. The demolition contractor was removing a curb when they unknowingly broke a main feed line for the sprinkler system. This would normally not have been something difficult to remedy. However, they did not know where the shut-off valve was for the system. With this problem hundreds of gallons of water were wasted and the ground will have to be repaired prior to work...more