case studies

Using 3D Laser Scanning For Facility Design Modification

When plant engineers at a pet food packaging facility needed to make modifications, they asked GPRS 3D Laser Scanning to provide as built documentation and a 3D model to plan retrofits to the existing structure. The project site consisted of 140,000 sq. ft. of interior space. Approximately 100,000 sq. ft. of this was single-story warehouse space, consisting of a central palletizer, semi- truck loading bays and temporary material storage. The remaining 40,000 sq. ft. contained 7 levels of elevated platforms containing product packaging equipment. TruePoint captured all architectural and structural features, equipment, conduit and piping.
Transforming a pet food facility with GPRS 3D Laser Scanning. Detailed documentation & 3D models streamline retrofit planning. Covering 140k sq.ft., including warehouses & elevated platforms.
CASE STUDY LOCATION Bowling Green, Kentucky TASK: When plant engineers at a pet food packaging facility needed to make modifications, they asked TruePoint Laser Scanning to provide as built documentation and a 3D model to plan retrofits to the existing structure. The project site consisted of 140,000 sq. ft. of interior space. Approximately 100,000 sq. ft. of this was single-story warehouse space, consisting of a central palletizer, semi- truck loading bays and temporary material storage. The remaining 40,000 sq. ft. contained 7 levels of elevated platforms containing product packaging equipment. TruePoint captured all architectural and structural features, equipment, conduit and piping. PROBLEM SOLUTION BENEFITS n By using laser scanning instead of traditional survey methods, TruePoint saved this client thousands of dollars in field survey work and drafting time, and provided greater detail than what would have otherwise been possible. With an accurate, comprehensive data set, plant engineers were able to complete virtual interference checks, avoiding design rework costs. n In two days on site, TruePoint’s experienced project managers 3D scanned the 140,000 sq. ft. area with millimeter accuracy. 523 scans were taken with the Leica P50 and RTC 360 laser scanners. This project was scanned on the weekend to avoid disruption to production. n After proper data registration, TruePoint’s in-house modeling team built an information-rich 3D BIM model for the client. TruePoint’s experienced team has optimized workflows for importing data, registration, creating deliverables, quality checks and transferring data to clients. n No as built plans existed for the facility. The plant was complex, capturing the existing spatial data of the conduit and piping in a high level of detail was important to the plant engineers. n There were silos and other pieces of large equipment that would be difficult to measure precisely using traditional or manual measuring techniques. /// GPRS LASER SCANNING SERVICES ///// 3D LASER SCANNING CASE STUDY: USING 3D LASER SCANNING FOR FACILITY DESIGN MODIFICATIONS “IT’S HARD FOR ME TO IMAGINE HOW THIS PET FOOD PACKAGING FACILITY COULD HAVE BEEN DOCUMENTED WITHOUT 3D LASER SCANNING.” TRUEPOINT PROJECT MANAGER
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3D Laser Scanning
Mapping & Modeling

Comprehensive Utility Mapping In Charlotte, North Carolina

GPRS’ use of Subsurface Investigation Methodology paired with the high-speed GPR array provided the most precise subsurface utility infrastructure mapping available, found 171 lines in 55 minutes, and completed the job without disrupting traffic flow.
Accurately map the entire subsurface utility infrastructure of 0.6 miles of three-lane, high-speed road in the city of Charlotte, North Carolina
GPRS used Subsurface Investigation Methodology with a high-speed GPR array to map utility infrastructure, finding 171 lines in 55 minutes and completed the job without disrupting traffic flow.
UTILITY LOCATING: CASE STUDY In Pursuit of Subsurface Damage Prevention TM n GPRS collected all the over-road data in 55 minutes to capture 171 utility lines and other features n By supporting the high-speed array with SIM, GPRS was able to locate, identify, track, and log far more utilities than could have been found by the GPR array only n Condor Osprey software produced a comprehensive TIF file that offers data portability to ESRI, ArcGIS, CAD, QGIS, Google Earth & SW Maps, among others n GPRS’ precise depth work found two 10-foot tunnels buried 11 feet under the surface that did not appear on existing as-builts n Data collection had to be done without disrupting traffic with lane closures, detours, or slow-downs n Data had to be complete and highly accurate with RTK positioning coordinates, and portable to various GIS systems n Although the high-speed array was accurate, it has limitations. To create a comprehensive map, complementary technologies & methods were required PROBLEM SOLUTION BENEFITS The Bottom Line: GPRS’ use of Subsurface Investigation Methodology paired with the high-speed GPR array provided the most precise subsurface utility infrastructure mapping available, found 171 lines in 55 minutes, and completed the job without disrupting traffic flow. SUPPORTING HIGH-SPEED GPR ARRAY WITH SUBSURFACE INVESTIGATION METHODOLOGY FOR COMPREHENSIVE UTILITY MAPPING IN CHARLOTTE, NORTH CAROLINA TASK: Accurately map the entire subsurface utility infrastructure of 0.6 miles of three-lane, high-speed road in the city of Charlotte, North Carolina n GPRS controlled array data quality in the field: found & filtered out poor GPS coordinates on site n GPRS’ Mapping & Modeling Team employed slicing, data filters, and soil velocity calibrations to the array data to ensure precise depths and extract 171 lines for mapping n Subsurface Investigation Methodology (SIM) compensated for the limitations of the array. SIM verified utility lines & types, and corrected inaccurate data with complementary technologies n The field team provided a full surface mark-out: tracked each line to a surface feature, uploaded the verified data with RTK positioning to SW Maps & SiteMap®, to provide data portability to ArcGIS, ESRI, et al. The tow behind has 18 channels of GPR, 8cm from one another. This is an example of OspreyView, displaying utilities from 1.8ft to 5ft in this intersection. The features are color coded based on depth. Yellow is nearer to the surface, green is around 3.5ft and the blues are towards 5ft in depth
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General SOQ
Utility Locating
Mapping & Modeling

Teichert Solar Carport Gateway Seminary

GPRS located, marked, and mapped a seven-acre site in a single day, supplying instant access to subsurface as-built data via SiteMap® to help Teichert Solar to avoid utility strikes, delays, and redesigns, adding efficiency and saving money.
Locate, mark, and map all utility and sewer lines at Gateway Seminary in Ontario, California prior to the construction of solar carports by Teichart Solar.
GPRS located, marked, and mapped a seven-acre site in a single day, supplying instant access to subsurface as-built data via SiteMap® to help Teichert Solar to avoid utility strikes, delays, and redesigns, adding efficiency and saving money.
Installing solar carports is a technically challenging project that requires careful engineering and a proper foundation to support the weight of the steel structure and solar panelsExcavation clearance was required before Teichart could core holes in the parking surface for concrete foundations to assure they didn’t strike subsurface utilities GPRS located and mapped the electric, communication, water, storm sewer, sanitary sewer, and irrigation lines: information necessary to plot and place the solar carport foundationsGPRS also identified any additional subsurface objects found such as concrete pads and USTsTeichert Solar was able to quickly access 99.8% accurate field- verified GPS-enabled CAD utility site maps in PDF, KMZ, and SHP file format via SiteMap®, GPRS’ cloud-based infrastructure visualization software In one day on site, three GPRS Project Managers used GPR technology and EM locators to mark the precise locations and deliver a CAD utility site plan showing the accurate vertical and horizontal positions of underground utility and sewer locationsUtility maps were easily shared via SiteMap® with the solar canopy subcontractors and engineers to collaborate on installation and avoid utility strikes
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Solar Case Studies
Mapping & Modeling
Solar
Utility Locating
As-Built Creation

3D Laser Scanning Delivered Critical Dimensional Analysis for Wind Turbines

GPRS provided critical dimensional verification to ensure a flawless installation, reduce delays, clashes, and other unforeseen challenges for the project team
GPRS partnered with two renewable energy companies constructing an offshore wind farm to verify that the prefabricated components of several wind turbines met the specified design requirements
GPRS aids renewable energy projects with precise as-built data for design, construction, and maintenance. From solar panel installation to wind farm construction, we deliver accurate data for your project needs. 3D laser scanning captured complete and accurate dimensional information to verify that the prefabricated components were in tolerance for the design drawings Precast concrete foundations were laser scanned and a CAD comparison was performed to confirm that the dimensions matched the design planSubstation topside steel platforms were laser scanned to provide accurate as-built dimensions of all three levels and report the maximum outside diameter of the structure The Mapping & Modeling Team delivered 2D CAD drawings and a 3D BIM model, detailing the as-built dimensions and deviation between the design model and actual component 3D laser scanning captured complete and accurate dimensional information to verify that the prefabricated components were in tolerance for the design drawingsPrecast concrete foundations were laser scanned and a CAD comparison was performed to confirm that the dimensions matched the design planSubstation topside steel platforms were laser scanned to provide accurate as-built dimensions of all three levels and report the maximum outside diameter of the structureThe Mapping & Modeling Team delivered 2D CAD drawings and a 3D BIM model, detailing the as-built dimensions and deviation between the design model and actual component
The construction of a wind turbine required shipping prefabricated components on a vessel out to sea and using a crane to assemble Verification of the prefabricated component measurements within tolerance of the design drawings ensured a flawless installation Unique construction conditions meant there was no time to troubleshoot installation problems or add additional site visits and time at sea
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3D Laser Scanning
Floor Plan Creation
3D Laser Scanning
Mapping & Modeling

New Tenant Requests Laser Scanning To Plan Store Layout

A GPRS Project Manager 3D laser scanned 4,000 s.f. of existing retail space to provide 2D CAD drawings, a 3D virtual tour, a colorized point cloud, and a 3D BIM model to a client who was renovating a 30-year-old location.
Capturing 4,000 s.f. of Retail Space for New Tenant's Redesign
GPRS 3D Laser Scanning Services provided 3D reality capture, 2D CAD drawings, point cloud, a 3D virtual tour, and BIM model to redesign a retail location for a new tenant in Austin, Texas.
An Austin-based maker of cowboy boots and western wear was moving retail locationsThe previous tenant had occupied the location for more than 30 years The new tenant desired 2D floor plans and a 3D BIM model for a virtual walkthrough of the propertyThe previous tenant still occupied the active storefront, so scanning had to be completed after hours to avoid business interruptions Utilizing a Leica P-Series laser scanner, the GPRS Project Manager completed 24 scans of the 4,000 s.f property in one eveningLaser scanning captured measurements and virtual tour data to help the new tenant plan the store layoutGPRS Mapping & Modeling Team provided the tenant with a colorized point cloud, architectural 2D floorplans, a 3D BIM model, and virtual tour of the property 3D laser scanning is the fastest way to capture existing building conditions, documenting every detail into a digital mapMeasurements and point cloud data is accurate within 2-4mm to allow for accurate 2D and 3D as-builts3D virtual walk throughs allow the tenant to view the site remotely to easily plan and implement floor layouts and merchandisingWhile the renovations were initially designed in Rhino, the client planned to export Rhino models into Revit for further refinement and documentation
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3D Laser Scanning
3D Laser Scanning
Mapping & Modeling

Vanderbilt University's Legends Golf Club Expansion & Renovation Relied on GPRS 3D Laser Scanning Services

The 17,000 s.f. golf club, including pro shop, locker rooms, and restaurant areas were all 3D scanned in a single day with minimal operational interruption to provide 1/4" accurate structural & architectural models
GPRS 3D Laser Scanning provides existing conditions documentation to Vanderbilt University's Legends Golf Club
Vanderbilt Legends Golf Club renovations aimed for "elite facility" status, aided by GPRS 3D Laser Scanning and Mapping & Modeling Services
Vanderbilt University planned an expansion and renovations of its Legends Golf Club to propel it to "elite facility" statusThe architect on the project needed accurate existing conditions documentation to develop a design plan and solicit bids from construction companiesThe club management required that any work be completed with minimal operational interference GPRS 3D laser scanned the two-story, 17,000 s.f. clubhouse in one day with the Leica RTC360An intensity map point cloud file, 2D CAD drawings, and a Revit 3D model were all delivered to the architect via GPRS Mapping & Modeling TeamDocumenting architectural elements, such as the building envelope, walls, windows, doors, ceilings, exposed columns, beams, and posts with 2-4mm accuracy was critical to the renovation effort Capturing real-time existing conditions prior to designing the expansion & renovation reduced reworks, waste, and mistakesThe 1/4" accuracy provided by the architectural and structural model allowed for extremely detailed plans to be delivered to the contractorThe building renovations created a state-of-the-art facility for the team, the membership, and to aid in recruitment efforts
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3D Laser Scanning
Floor Plan Creation
Virtual Tours
3D Laser Scanning
Mapping & Modeling

3D BIM Model for Virtual Design and Clash Detection

Providing both a 3D BIM model and a 2D reflected ceiling plan allowed various trades and MEP professionals to work without disturbing each other's timelines, to finish the project with fewer mistakes, reworks, and less cost.
Use 3D laser scanning to create a BIM model for new construction coordination in Paoli, Pennsylvania.
GPRS provided a detailed Revit 3D BIM model and reflected ceiling plan to keep a large project on schedule and reduce clashes and reworks.
Only the building shell existed, but did include the foundation, structural skeleton, columns, beams, and fire suppression system pipingA BIM model was requested to complete the design, minimize clashes, and plan for field coordinationThe VDC engineer wanted each trade to be able to conduct their specific work without interference from other trades A 3D Revit model was created from the point cloud with standard detail that included architectural, structural, and MEP featuresA reflected ceiling plan, an architectural drawing that shows visible objects located on the ceiling of a space, was delivered for MEP coordination2D plans and 3D models allowed this client to complete the design, communicate the scope of work to each trade, and efficiently schedule work to be completed Model-based implementations are the foundation of our client’s VDC department. They plan site layout and work sequencing for efficient logistics and safety.Because the VDC engineer received an accurate as-built model to place all building components and MEP into, they were able to effectively plan and communicate to minimize trade interference, clashes, installation problems, rework, and additional costs
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3D Laser Scanning
3D Laser Scanning
Mapping & Modeling

3D Laser Scanning for Building Redevelopment

Accurate 3D BIM modeling allowed the developer and two architectural firms to collaborate and more easily communicate with their general contractor, which saved time and money on a massive adaptive reuse project
$30 Million Hotel & Parking Garage Adaptive Reuse Project Required Accurate 3D Visualizations
Laser scanning to create a 3D BIM model of a 15-story hotel and adjacent parking garage for building redevelopment. The developer requested a 3D BIM model that accurately captured existing conditions in a cloud-based platform so they could document, view, and plan for structural renovationsWith a 3D model, the architectural team was able to view the existing conditions at the onset of the project. The model was then updated as construction progressed to keep all parties on the same page throughout the projectThe 3D model allowed the firms to communicate construction requirements to the general contractor to avoid miscommunications, reworks, delays, and cost overruns
$30 million-budgeted adaptive reuse project converting 130,000 sq. ft. hotel property into 100 residential units Most floors of the building were completely gutted: only the exterior envelope and interior circulation core remained intact With two architectural firms, a developer, and a G.C. meant that this project involved many professionals a lot of planning before breaking ground The developer requested a 3D BIM model that accurately captured existing conditions in a cloud-based platform so they could document, view, and plan for structural renovations With a 3D model, the architectural team was able to view the existing conditions at the onset of the project. The model was then updated as construction progressed to keep all parties on the same page throughout the project The 3D model allowed the firms to communicate construction requirements to the general contractor to avoid miscommunications, reworks, delays, and cost overruns The 3D model allowed the architectural team to troubleshoot the restoration and adaptation while keeping historic elements intact to preserve the building's characterDelivering the 3D BIM model in a digital format with the ability to update and edit, streamlined communication and collaboration across a large and diverse project team to bring the project in with fewer clashes, reworks, and mistakes, saving time and money
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3D Laser Scanning
3D Laser Scanning

GPRS 3D Laser Scans A Massachusetts Library Prior to Renovation

292 individual interior and exterior LiDAR scans were completed in a single day, capturing existing conditions including all historical features, all without disrupting the historic site's operations or impacting its valuable contents so that a renovation could be designed and planned without requiring time consuming hand-measurements.
3D laser scanning a historic Massachusetts library to create a 3D BIM model.
GPRS 3D laser scanned a historic library in Amherst, Massachusetts and created an LOD 300 Revit model for the architect. The interior and exterior of the library was 3D scanned, this was an estimated 47,000 sq. ft. of space with 4 levels.
Built in 1919: there were no existing as-built details availableIt was likely that the existing condition of the building included unsquared architectural features The library’s historic features had to be preserved and intact during and post-renovation The library needed to remain open to patrons and conduct regular operations while visualization was completedPaintings of Emily Dickinson and Robert Frost, plus local historical exhibits, were contained in a gallery on site that needed to remain untouched Laser scanning was executed on Patriot’s Day, a Massachusetts state holiday. The library was closed so all scans could be completed without disrupting operations292 laser scans were completed of the interior and exterior of the library; approximately 47,000 sq. ft. of space spanning four levels An intensity map point cloud and 3D BIM model were delivered to the client, giving them accurate data of the current as-built conditions 3D scanning provided updated floor plans and captured existing conditions via a 3D BIM model to speed redesign and planningArchitects, designers, and contractors could access and utilize the BIM model and 3D laser scanning data at any stage of the restoration process for reference3D laser scanning is non-contact; scanning from a distance minimized the risk of damaging historical art work and exhibits and was completed in a single day on site
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3D Laser Scanning
3D Laser Scanning

Directional Drilling Power Installation Needs Accurate Utility Maps

After two sets inadequate sets of utility locates led to multiple dangerous and costly utility strikes, GPRS helped get the project back on schedule, accurately mapped all underground utilities, and provided data that allowed the installation to proceed with ZERO additional utility strikes.
Providing accurate subsurface existing condition documentation for the safe installation of new power utility lines via directional drilling.
Unreliable utility locates and a tight timeline required non-destructive existing condition capture and utility mapping for new power utilities being installed via directional drilling
Problem • Multiple utility line strikes caused damage to local residential areas, delays to the project, and additional expense • The public utility locates proved inadequate for the directional boring installers needs • A third-party locator hired after the initial strikes did not provide adequate locates, resulting in additional utility strikes and damages • A tight deadline and rigorous subsurface requirements required extensive project coordination Solution • Our rapid response deployment allowed a Project Manager to be on site immediately mediate year technolodies allowed for the capture of accurate eviatina underaround it locations and mappine • The utilization of Subsurface Investigation Methodology (SIM) and multiple complementary technologies allowed for the capture of accurate existing underground utility locations and mapping • GPRS' 99.8% + subsurface utility scanning accuracy provided accurate locates and utility maps prior to directional drilling Benefits • On Time: Due to our rapid response, the project continued moving forward, with no new utility strikes, which reduced downtime • On Budget: There were ZERO new damages to existing utilities as new power lines were installed, which greatly cut cost overruns • Safety: No new utility strikes meant that both the installers and the community remained safe • Reputation: The customer increased their productivity to remain in good standing for project renewals in the future
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Power Case Studies
Utility Locating
Power

Water Treatment Plant Expansion Utilizes 3D Laser's Raw Point Cloud Data

Raw point cloud data provided an engineering firm in California the accurate measurements they needed to design and plan the expansion of a water treatment facility in Texas thanks to 3D laser scanning
Capture accurate existing conditions and provide raw as-built, point cloud data for the expansion of a water treatment plant
3D laser scanning captures existing conditions with 2-4mm precision, even in congested and difficult to reach places, like a Texas water plant with no existing as builts, scanned for a California engineering firm
No as-built drawings existed for the water treatment plant. Accurate existing conditions were needed to plan for the facility expansion • Exact dimensions were required to plan modifications and fabricate pipe • The project's engineering firm was located in California; the water treatment plant was located in Texas. They needed accurate information available in a digital platform to begin design planning Solution • Using a Leica Scan Station, a GPRS Project Manager completed 40 laser scans of the building to capture architectural, structural, and MEP features • The client received a colorized point cloud in ReCap (.rcp files and related supporting files) and TruView files that allowed the engineering firm and the plant to coordinate off-site planning and prefabrication for the expansion Benefits Laser scanning is an extremely efficient and accurate way to gather data necessary to create construction drawings of a building or space. • 3D laser scanning eliminated the firm's travel to the Water Treatment Plant. In one day on site, enough scans were taken to create a complete colorized point cloud of the space. • 3D laser scan data provided the Engineering Firm critical tie points on tanks and lines, information that was crucial to the expansion.
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3D Laser Scanning
3D Laser Scanning

GPRS Locates With 100% Accuracy in Metro Atlanta for Cable East

By entering into a partnership agreement with GPRS, Cable East received consistent pricing for hundreds of jobs in the Atlanta metro area, met their tight deadline for directional boring fiber line installation, and had ZERO utility strikes.
Clear the road and the ROW for fiber line installations throughout the ATL metro area
GPRS achieved 100% accuracy on private utility locates in the dense metro Atlanta underground infrastructure, which allowed for clean fiber line installs by Cable East.
The public utility locating service mismarked or misidentified multiple public utilities on the project site • The 811 One Call service located public utilities. Private utilities were left undiscovered • The deadlines for the project were tight, and quick turnaround times were required • The project was suffering budget overruns due to inconsistent private utility locator pricing Solution • Our SIM-certified Project Managers provided GPRS' consistent 99.8% + utility locating & mapping services • GPRS locates private utilities and can confirm locations for public utilities • Because we have over 500 Project Managers nationwide, our rapid response rates help turn projects quickly • Cable East & GPRS inked a partnership agreement that put an end to the client's inconsistent pricing issues Benefits • On Time: Due to our rapid response, we kept the project moving, reducing downtime • On Budget: There were no damages to utilities, and consistent partnership pricing, which kept the project on budget • Safety: Knowing the precise location of underground utilities reduced the risk of cross bores and kept everyone safer • Reputation: No strikes or delays means that our client's valuable reputation was protected • GPRS provided complimentary PDF and KMZ files as well as CAD drawings for precise underground utility mapping
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Telecom Case Studies
Utility Locating

GPRS Partners with TEP to Map 54 Telecom Tower Foundations for Nationwide Project

Tower Engineering Professionals partnered with GPRS for accurate and efficient utility locates at 54 telecom tower foundations throughout the U.S.
Tower Engineering Professionals partnered with GPRS for accurate and efficient utility locates at 54 telecom tower foundations throughout the U.S.
TEP needed to dig at the base of the foundations to validate existing anchors • A previous locate had misidentified some utility lines and left other utilities unmarked • Budget overruns were an issue due to inconsistent utility locator pricing Solution • Our nationwide team of 500 SIM-certified Project Managers located utilities and subsurface obstructions with 99.8%+ at each site • GPRS accurately identified unknown private utilities and verified public utilities onsite, to eliminate utility strikes for the project • Our national pricing and partnership agreements reduce unnecessary paperwork and logistics and keep prices consistent Benefits • On Time: Due to our rapid response, we kept the project moving, reducing downtime • On Budget: There were ZERO utility damages once GPRS was on the job, allowing the project to stay on budget • Safety: Knowing where utilities lie under the ground helped keep all workers safe • Reputation: No strikes or delays kept TEP's valuable reputation safe • GPRS provided complimentary PDF and KMZ files as well as CAD drawings of each tower foundation locate
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Telecom Case Studies
Telecom
Utility Locating

Keeping Workers Safe During Brownfield Construction Projects

GPRS safely mapped multiple substation locations for utilities and mapped all underground infrastructure including the grounding grids with zero ground disturbance, providing clearance for safe excavation and construction for the customer without the risk or expense of potholing in a brownfield.
Provide accurate existing condition documentation, identify, and map existing utilities and the grounding grid for each brownfield substation prior to construction
GPRS provided accurate existing condition documentation, identify, and map existing utilities and the grounding grid for each brownfield substation prior to construction.
There were no accurate as-builts or records of prior utility findings for the brownfield substations • Team member safety was the paramount concern due to unknown subsurface infrastructure and the additional risk of brownfield excavation • The state-provided 811 public utility locating service did not locate private utilities on the substation sites • It was important to know the exact location of the grounding grids to avoid striking it and damaging the substation's electrical infrastructure Solution • GPRS provided comprehensive and accurate utility infrastructure maps and existing subsurface condition documentation • Private utilities were located and the location of public utilities were confirmed to provide accurate maps and dig clearances • Locating each grounding grid eliminated the risk of a strike that could damage substation electrical infrastructure and cause injury • There were ZERO utility or grounding grid strikes on the project Benefits • On Time: We kept the project moving with our rapid response, reducing downtime • On Budget: There was no damage to utilities, saving the client from expensive damage reparation costs • Safety: GPRS kept all team members safe by preventing dangerous utility or grounding grid strikes during excavation • Reputation: With no utility strikes on the project, the customer maintains their good reputation
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Power Case Studies
Utility Locating
Mapping & Modeling

Acoustic Leak Detection Finds 28-Million-Gallon Leak at Historic RACER PFAS Site

To pinpoint a one gallon per second leak that had been hidden for 11 months in the fire suppression system for Insite Real Estate at an historic Michigan RACER-administered PFAS site.
The fire suppression system at this previous GM plant and historic WWII bomber facility was losing a gallon per second for more than 11 months. GPRS pinpointed the leak, stopping the pressure loss and outflow of some 28 million gallons of water at the RACER site.
Problem • Insite Real Estate had been searching for the fast-running leak in the fire suppression system at their site for nearly a year • At one gallon per second, over 11 months, the leak caused as much as 28 million gallons of lost water on site, all of which Insite had to pay for • Multiple jockey pumps were constantly running to keep the system pressure at 150 psi, which increased the electric bill • The site is an historic WWll bomber manufacturing plant and former GM facility, which was under the care of the Revitalizing Auto Communities Environmental Response Trust and monitored for PFAS contaminants in the water supply Solution • GPRS Leak Detection Project Managers listened to every contact point (hydrant, piv, valve, meter pit, etc.) • The PMs concluded that the noise was predominately near two hydrants • Leak correlation pinpointed the leak to the pipe running under/on the sidewalk • Once the leak was pinpointed, Insite could have it repaired efficiently and minimize risk Benefits • Insite was able to excavate only where the leak was located, instead of digging up the entire fire loop or a certain section of the pipe in a potentially risky environment • By pinpointing their excavation, Insite was able to repair the leak and stem the outflow of both water and money it had caused
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General SOQ
Leak Detection
Utility Locating

Concrete Scanning for: Denver Center for the Performing Arts Wall Removal

GPRS provided the accurate concrete scans and field markings that allowed Turner to cut and core at hundreds of locations in the facility with ZERO hits, keeping the project on time, on budget, and safe.
GPRS provided Turner Construction the concrete reinforcement infrastructure data it needed to remove concrete as part of a large tenant improvement project, requiring extensive concrete infrastructure changes at the Denver Center for the Performing Arts.
GPRS provided the concrete reinforcement infrastructure data it needed to remove concrete as part of a large tenant improvement project, requiring extensive concrete infrastructure changes at the Denver Center for the Performing Arts.
Due to the building's age and the amount of concrete removal required from walls and floors, it was critical to avoid striking existing reinforcements within the concrete in areas that were not being removed • During construction, damage to the existing infrastructure within concrete slabs, walls, and under slabs was a significant safety concern for the owner and the Turner team • The project required tight deadlines and extensive project coordination Solution • There were ZERO strikes of existing concrete reinforcements during the project, keeping the structure and the crews safe, and the project on time and on budget • GPRS Project Managers train in a world-class facility with thousands of square feet of concrete slab as part of their SIM certification, which gives them the experience required to scan the most complex subsurface infrastructures and is the backbone of our 99.8%+ accuracy rate • The repeatable methodologies of SIM make our Project Managers more efficient and allow them to scan dozens of locations in a day Benefits • On Time: Due to our rapid response, we kept the project moving, reducing downtime • On Budget: There was no concrete damage allowing the project to stay on budget • Safety: Protecting post tension cables and structural steel from damage helped keep all workers safe • Reputation: No strikes or delays meant that the client's valuable reputation was protected
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General SOQ
Concrete Scanning

VPI Helps Mitigate Risk of Contaminated Groundwater Infiltration at Outfall Point

GPRS pinpointed the defect in the storm sewer line that was allowing for inflow of contaminated groundwater so that the system manager could repair it and stem the flow of contaminants at the outflow point, to protect the waterway, the environment, and public health
Pinpoint the source of contaminated groundwater infiltration so the customer could mitigate it before it reached the outfall point
GPRS pinpointed the defect in the storm sewer line that was allowing for inflow of contaminated groundwater so that the system manager could repair it and stem the flow of contaminated water at the outflow point, to protect the waterway, the environment, and public health.
The client requested us to locate and inspect the storm sewer system, including potential laterals at a site with known soil and groundwater contamination • There was no known existing condition documentation or maps of the storm sewer system or potential laterals • The client identified higher contaminant concentrations at the storm sewer outfall than at upstream catch basins • An outfall is where a sewer line discharges into a body of water, so it is vital to the environment and public health to mitigate inflow contamination Solution • GPRS VPI services located and mapped all storm sewer lines, laterals, and flow direction to the outfall • We did this utilizing lateral launch cameras, robotic CCTV crawlers, and push cameras • We identified the area of groundwater intrusion into the storm sewer system, which assisted in determining which portion of the system needed to be repaired to stem the contaminant inflow before it reached the outfall Benefits • On Time: Due to our rapid response, we kept the project moving, reducing downtime • On Budget: GPRS protected the client's budget by preventing expensive and unnecessary excavations • Safety: GPRS provided accurate storm sewer locations and depths as well as the area the contaminated groundwater intrusion was identified. So the client was able to dig safely, repair the line, and eliminate the contaminated groundwater infiltration to eliminate risk to public health and the environment • Reputation: By preventing the client from using a trial-and-error approach, they can quickly deliver their results to their customers to alleviate concern and protect public health • GPRS provides complete NASSCO-certified Video Pipe Inspection Reports that provide video, photos, and reporting of each pipe defect discovered and its severity to help customers plan, repair, and better maintain their sanitary and storm sewer systems
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General SOQ
Video Pipe Inspection
Utility Locating

Above & Below-Ground Data Capture for California School's HVAC Upgrades

In less than two hours on site, GPRS 3D Laser Scanning captured all aboveground features and utility field markings that were then used to provide integrated above and below-ground plan view of the campus via 2D CAD drawings to plan HVAC upgrades, and have accurate existing condition documentation for future use
A Los Angeles, California high school required 3D laser scanning of the above ground and below ground infrastructure to create 2D CAD drawings and plan for HVAC system upgrades throughout the campus
In less than two hours on site, GPRS 3D Laser Scanning captured all aboveground features and utility field markings that were then used to provide a integrated above and below-ground plan view of the campus via 2D CAD drawings to plan HVAC upgrades, and have accurate existing condition documentation for future use.
Problem • A 12-year-old high school was replacing the piping on 16 HVAC units throughout the campus. • The piping for these units runs intricately in and out of buildings, and through retaining walls and mechanical yards. • The areas that the pipes thread through do not have any as-builts or existing plans. Solution • Using the Leica RTC360 laser scanner, a Project Manager captured elements of the surrounding campus and GPR markings in less than hours on site • This project was laser scanned in full color, allowing the client to easily visualize and identify structural elements, pipes, conduits, and concrete reinforcement points inside the point cloud • CAD engineers created 2D AutoCAD floor plans and exterior elevations, PDFs with and without the point cloud overlayed Benefits • The combination of laser scanning structural and ground penetrating radar markings provided the client a high definition 3D comprehensive view of the campus, including both visible and invisible elements • With 3D laser scan data, the client can verify the HVAC mechanical equipment with confidence knowing high accuracy instruments minimize position error throughout the 3D space • The client has the most up-to date, accurate and comprehensive information to design HVAC upgrades
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3D Laser Scanning
3D Laser Scanning
Utility Locating
Mapping & Modeling

NFL's Bank of America Stadium Scanned for Mixed Reality Experience

The Famous Group was able to create a mixed reality experience that included an enormous virtual panther skulking through the stadium and onto the Jumbotron, delighting the 70,000 fans in attendance, thanks to the accurate scans, models, and meshes provided by GPRS
GPRS 3D laser scanned The Bank of America Stadium and the Gentle Giant panther statue for The Famous Group and the Carolina Panthers to create a mixed-reality experience for the home opening football game vs. the New York Jets
GPRS 3D laser scanned The Bank of America Stadium and the Gentle Giant panther statue for The Famous Group and the Carolina Panthers to create a mixed-reality experience for the home opening football game vs. the New York Jets.
Problem • To sell the realism of mixed reality, computer-generated objects must precisely interact with the physical environment • As-built information and a 3D model of The Bank of America Stadium did not exist Solution • In 1 ½ days on site, using a Leica P40 ScanStation, point cloud data of the interior field, stadium bowl, seating, and upper rigging area was captured • To give the panther virtual objects to climb on and interact with, CAD technicians used the point cloud data to create a Revit 2021 LOD 200 3D model of the stadium • The Gentle Giant panther statue at the front of the stadium was 3D laser scanned to create a triangulated 3D mesh model in .fbx file format for the animation/CGI Benefits • 3D laser scanning is a fast and accurate way to digitize real-world objects for use in computer-aided design (CAD) and mixed reality • 3D models are created in our corporate office by experienced engineers and CAD technicians • The Famous Group was able to create a mixed reality experience that included an enormous virtual panther skulking through the stadium and onto the Jumbotron, delighting the 70,000 fans in attendance
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3D Laser Scanning
3D Laser Scanning
Mapping & Modeling

3D Laser Scans Help Airport Prefab Efforts

The client was able to fabricate components offsite and plan a flawless installation based on our existing condition data and 3D model. Plus, GPRS' work was conducted entirely at night, mitigating any disruption to construction
Field verification to prefabricate ACM panels
The construction plans did not match the existing conditions at the site. The installation process needed to be precisely planned to avoid rework • The shape of the canopy was complicated and stood 65 feet in the air. The client needed field verification and a plan to expedite proper installation of the panels • Installers were working overhead in a lift; there was no room for trial and error Solution • The Project Manager conducted a site walk to devise a plan for the client • The canopy and curtain wall of the airport terminal were 3D laser scanned to capture precise as-built data and generate a 3D model and 2D drawings to facilitate ACM panel installation • 22" x 34" 2D CAD drawings were created with the panel layout for the client to take to the field. This allowed each panel to be labeled with a custom number, cut and shim points Benefits • Laser scanning obtained exact measurements for the client and took away any guesswork from this project • To circumvent the active construction site, the Project Manager scanned the site at night to eliminate movement and trades working • The client was able to fabricate components offsite and plan a flawless installation
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3D Laser Scanning
3D Laser Scanning
Mapping & Modeling

Live Power Plant As-Builts Required

In just one day on site, GPRS was able to capture the entire existing condition of the facility, even in dense pipe runs and hard-to-reach spaces, with 2-4mm accuracy to provide the client with an accurate 3D BIM model for planning, fabrication, and clash detection
An engineering firm needed to have existing conditions of a power plant documented and modeled to plan for renovations.
An engineering firm needed to have existing conditions of a power plant documented and modeled to plan for renovations.
Problem • The client needed to accurately document the existing conditions of the plant without interruptions to the power supply • Many of the pipe runs were dense and impossible to accurately measure by hand • The client required 2-4 mm accuracy of dense piping and pipe runs throughout the facility • The client needed to guarantee that installations complied with safety regulations Solution • In one day on site, GPRS' Project Manager used the Leica RTC360 laser scanner to capture 150 laser scans, documenting existing conditions of the facility • Many of the pipe runs were dense and impossible to accurately measure by hand • GPRS generated a 3D BIM model for use in CAD software, including all civil, structural, electrical, and mechanical features, piping, and conduit 1" and larger Benefits • Due to the vast space and density of the piping, it would have been much more difficult and time consuming to accurately depict the location of pipe runs, structural features, and other details in the plant manually • The point cloud data from laser scanning was used by CAD technicians to create an intelligent 3D BIM model for planning, fabrication and clash detection • Verified measurements and virtual planning guarantee installations will comply with safety regulations • Using virtual 3D models, the firm can plan and model future developments to manage the facility without having to re-enter the site
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3D Laser Scanning
3D Laser Scanning
Mapping & Modeling