Past Project Archive
GPRS was contacted by a large facility in Green Bay, WI to locate all private utilities and map them using GPS units. They were also looking for autoCAD work and a full GPR investigation in order to find any abandoned lines. In the 100+ years that this facility has been functional, there were quite a bit of surprises.
GPRS was able to locate and map the private utilities of the 80+ acres that the facility spanned in 10 days. How might you ask? Sheer man power, long hours, dedication, and a lot of perseverance. GPRS was able to send guys from Chicago, Minneapolis, Madison and...more
Ground Penetrating Radar Systems, Wisconsin, was contacted by a local power plant to locate known and unknown utilities in order to update their as built utility drawings. The customer recently encountered an unknown utility during an emergency fire main repair. The customer had concerns that there could be many undocumented utilities and reached out to GPRS, to conduct a thorough investigation of the site. GPRS arrived on site without delay using our SIM utility locating process as well as utilizing Ground Penetrating Radar technology for a more thorough sweep of the entire site, limiting...more
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)
Scan before you plan! This ensures worker safety and saves valuable time by targeting specific areas of...more
GPRS, Inc. was contacted by a general contractor to scan for utilities prior to excavation at a hospital site in Milwaukee, WI. The contractor needed to install a sewer line, but they wanted to have the area scanned before they got started with excavation. After arriving on site, GPRS scanned the area using both ground penetrating radar and Radio Detection equipment, and these results were marked onto the ground with spray paint and flags. Once the scan was finished, the contractor was then able to use this information to plan out the safe removal of the soil that was required to install...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted by a general contractor out of Neenah, WI. to locate conduits within, and below a concrete slab prior to saw cutting.
While scanning the area, GPRS was able to locate several conduits, and as the scan was completed, GPRS Project Manager, Chris Geary took pictures of the findings, and annotated the pictures for clarity. Once the scan was finished, these pictures were added to the job summary report that was completed WHILE ON SITE. The contractor then used the results of the scan to plan out how to cut or chip...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted by general contractor to conduct a GPR scan before they installed new plumbing lines at an office building in the Greater Milwaukee Area. GPRS was asked to scan areas for potential conduits in multiple areas. The contractor feared hitting the electrical lines that were connected to the cooler units for the fresh produce as well as 480v lines in the back of the store. Additionally, the contractor wanted to avoid saw cutting through known empty conduits. This was because the conduits were to be used again. GPRS...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted by plumbing contractor to scan areas prior to saw cutting. The area needed to be scanned because the plumber needed to access to several sewer lines that were deep in the ground. GPRS was asked to scan the project area for conduit. As the contractor feared cutting electric and fiber/communication lines.
During the scan, GPRS located multiple conduits, and of course, if these conduits would not have been located, an accidental hit would have caused thousands of dollars of damage Ground penetrating radar is a...more
When a general contractor in Milwaukee needed to identify the location of a known underground tunnel constructed in the 1880’s for use by nuns and clergy before performing storm sewer upgrades; they contacted GPRS to use Ground Penetrating Radar (GPR). Marcus Thie, Project Manager for the Wisconsin market was able to locate the underground tunnel, which connected several churches over multiple city blocks, with a GSSI 400 MHz antenna and RD8100 radio detection wand. GPRS was able to mark out the location, extents and approximate depths of the tunnel in various locations throughout the span...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted by a nationwide contractor to scan columns prior to anchoring and drilling into the structure. The project took place at a large basketball stadium project and complex. The purpose of the scanning was to identify critical targets such as rebar. The contractor needs to anchor and drill into the columns in order to build the structure to support the soon to be added skywalk connecting the parking structure to the basketball stadium. GPRS scanned from a boom lift to access the areas on the second level. GPRS used...more
GPRS, Inc. was contacted by a general contractor to locate many private utilities in area of an industrial plant where digging was to occur in the future. For this project, it was crucial that the depth of utilities were able to be identified. In this area the refinery needed to re pave asphalt and feared hitting many known utilities. Their typical utility locating service provider was unable to provide depths with their standard equipment. GPRS was tasked with the difficult and important job. In addition to successfully locating and providing depths to ALL utilities, GPRS was able to...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contracted by multiple general contractors to assist in locating post tension, rebar, and conduits in the concrete at the Corners of Brookfield construction project in Brookfield, WI. GPRS was asked to scan areas to identify the location of steel or conduit for prior to drilling for anchor points and core drill locations. The image below indicates an area very congested with rebar and post tension coming from all angles. GPRS mapped all reinforcing to allow for safe drilling for anchoring into the slab.
Ground Penetrating Radar Systems was called upon by an electrical contractor working in Milwaukee, WI to scan a slab on grade surface to map conduits prior to saw cutting a floor as part of a renovation project. One of GPRS Inc. project managers used GPR and Radio Detection to locate live power and other trenches with multiple conduits crossing the proposed concrete saw cuts and informed the client of their depth and locations. The contractor was able to avoid cutting through important utilities with the information provided to them by GPRS.
GPR is a great tool to locate conduits and...more
No need for destructive testing, call Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin! GPRS, Inc. can locate voids! GPRS, Inc. was contracted by a very well-known contractor in Green Bay, WI. to locate the extent and location of voids beneath the concrete inside a large manufacturing facility. The concern of voids began when a water main burst inside the facility and flooded a large area. The concrete near the damaged water main had shifted and caused structural and cosmetic damage to office areas in nearby. GPRS, Inc. was able to mobilize within 48 hours and locate the...more
GPRS, Inc. was contacted by an engineering firm to locate underground utilities on the site in order to plan an expansion of the summer camp near Green Bay, WI. The GPR/ RD investigation allowed GPRS, Inc. to locate electric, fiber, water, sanitary, and communications on the site. In addition to successfully locating and providing depths to ALL utilities, GPRS was able to provide the client with GPS mapping services of the utilities found. This assisted the engineering firm in the planning stages of the project for new services to be added to the site for the new addition. Thanks to GPR...more
GPRS was contacted by a large contracting company to locate underground voids at a site in Milwaukee, WI. The customer was planning on placing their crane in a designated area and needed to make sure the pads for the outriggers were going to be placed on solid ground. The technician on site, Chris Geary, used GPR to detect voids and informed the customer where it would be safe to place their crane.
Ground penetrating radar is also a great tool to scan areas of post tension cables, rebar, and conduits, including PVC pipes and can also be used to locate underground utilities prior to...more
GPRS was contacted by a construction company to scan concrete to help with the expansion of hospital. The customer needed any unknown anomalies to be located as preparation for the pluming company coring through the concrete. Not only were anomalies marked out, Shaun Ashley a highly trained technician in the Chicago market answered any questions the customer had before they began coring.
For additional information, to request a quote or to schedule GPRS on your next project in Northeast Illinois, including the Chicago and Rockford areas, call 312.717.6935 or email...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was a contacted by a major general contractor to scan reinforcing on two faces of twenty-one overhead beams of a parking garage of a hospital in Milwaukee, WI. The purpose of the scanning was to identify the stirrups and post-tension tendons in order to evaluate the strength of the beams and to design new cross beams to be added to increase the structural integrity.
The site was very congested with shoring every few feet. Because of this, GPRS, Inc. scanned all the beams from a ladder! GPRS, Inc. was contacted only two days...more
GPRS, Inc. was contacted by a major general contractor to assist with determining structural reinforcing of a 10" thick post tension slab at the new Galaxie high rise building. GPRS, Inc. was informed the new HVAC system had to be moved to better fit the design plans and this would require cutting into the elevated slab. GPRS, Inc. was tasked with identifying the location/ depth of the reinforcing as well as differentiating rebar vs. post tension tendons. GPRS, Inc. was able to answer all of the questions regarding the reinforcing within the slab and the findings from the GPR scanning were...more
GPRS, Inc. was contacted in the middle of the night by a large environmental firm for an emergency utility locate at the train derailment of a crude oil carrier in Watertown, WI. GPRS, Inc. was able to organize and mobilize to the site within hours of receiving the green light to conduct utility clearing. This rapid response by GPRS allowed the contractors to determine a course of action for safe excavation of damaged utilities and structures around the wreckage quickly and safely. GPRS, Inc. worked right alongside the public utility locating companies, environmental agencies and...more
GPRS, Inc. was contacted by a general contractor in Milwaukee, WI to locate many private utilities in areas where excavation would occur in the parking lot of a high school. The contractor’s usual utility locating contractor could not handle such a large job on short notice. GPRS, Inc. scheduled and completed next day! GPRS, Inc. was able to locate sewer, sanitary, water lines, and electric lines and much more on site. Many of these utilities were made of plastic and unable to be located by traditional methods. Thanks to GPR technology, GPRS, Inc. was able to locate the lines of search for...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted to locate utilities of a very large parking lot in Fox Cities area to locate utilities and Underground Storage tanks of a gas station. The scanning conducted was to minimize opportunity of hitting any utilities, tanks, and other unknowns in the parking lot where asphalt had failed. The entire parking lot was to be excavated and resurfaced to better accommodate customers coming to the fuel station. Using ground penetrating radar, GPRS, Inc. was able to locate electrical, fiber optic, USTs, fuel lines, gas lines, and...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted by a major general contractor to scan a post tension slab of a parking garage at a large casino in Milwaukee, WI. The general contractor needed to put anchor bolts in twelve locations for fence posts on the top floor of the parking structure of the casino.
Using our 1600 MHz antenna we were able to see well into the slab and were able to identify the post tension and rebar running through the locations. Ground penetrating radar is a great tool to scan areas of post tension cables, rebar, and conduits,...more
Has the Digger’s hotline been unable to locate private utilities on your site? Call Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin.
GPRS, Inc. was contacted by a grain producing plant in Friesland, WI to locate many private utilities in areas where digging was to take place. GPRS, Inc. was able to locate sewer, sanitary, water lines, and electric lines on site. Many of these utilities were made of plastic and unable to be located by traditional methods. Thanks to GPR technology, GPRS, Inc. was able to locate the lines of search for safe excavation. GPR was able to...more
Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted by Stoughton Trailers, LLC. again to locate electrical in their manufacturing plant. The plant is undergoing a massive expansion as they prepare for growth in a proprietary product. GPRS, Inc. was at the site a few weeks earlier to conduct a locate for another electrical conduit. As they began cutting concrete in the next phase of construction, they realized the building plans were wrong again and had hit another set of electrical conduits. Thankfully, nobody was injured during cutting, but soon after GPRS, Inc. was...more
With older manufacturing facilities, the records regarding underground Storage Tanks are frequently lacking. It can be unclear whether a UST was removed, abandoned in place, or if it was ever installed as intended. Because of the current tighter environmental regulations, renovations or real estate transactions can be delayed until any UST’s at the site can be located or shown to have been removed. Testing Services Corporation needed to locate Underground Storage Tanks at two sites in West Chicago, IL. Ground Penetrating Radar Systems was able to scan these two sites in the same day and...more
The pictures you see below 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 continuing.more