GPRS’ detailed 2D CAD drawings and 3D BIM model allow for safe cutting, coring & drilling for building-wide MEP and HVAC installations.

GPRS located and marked the full post-tension cable system layout for 12 floors of a 49-floor building, with approximately 12,500 sq. ft. of concrete on each floor. After concrete scanning was completed with ground penetrating radar technology, GPRS 3D laser scanned each floor to produce 2D CAD drawings and a 3D BIM model for virtual design and construction. The architect received a permanent record of the post-tension cable layout to complete fit and finish design plans for the building.

Mapping the PT cable layout in concrete slabs facilitates design and minimizes the risk of injuries and delays.

GPRS’ detailed 2D CAD drawings and 3D BIM model allow for safe cutting, coring & drilling for building-wide MEP and HVAC installations. Construction Concrete Scanning, 3D Laser Scanning & 3D BIM Modeling Concrete scanning services will locate critical targets like post tension cables, rebar, conduits, voids, and more to help keep your project on time, on budget, and safe. 3D laser scanning captures concrete markings with 2-4mm accuracy for GPRS to transform into custom 2D CAD drawings and 3D BIM models. GPRS located and marked the full post-tension cable system layout for 12 floors of a 49-floor building, with approximately 12,500 sq. ft. of concrete on each floor. After concrete scanning was completed with ground penetrating radar technology, GPRS 3D laser scanned each floor to produce 2D CAD drawings and a 3D BIM model for virtual design and construction. The architect received a permanent record of the post-tension cable layout to complete fit and finish design plans for the building. Post-tension cable location, spacing, and depth are determined by an engineer, are specific to each project, and must be traced in short distances to reveal the slope. Each tendon pulls 24,000 to 33,000 lbs. of pressure. Damaging a cable when cutting, coring, or drilling into a slab can cause a tendon to burst with enough force to cause severe injury or death, and impact the structural integrity of the slab. Replacing a single post-tension cable costs $10,000 - $20,000. Experienced Project Managers used ground penetrating radar (GPR) technology to locate and mark the precise details of each concrete reinforcement, documenting the location, number of cables, and depth directly on the slab and ceiling. After the post-tension layout was complete, each floor was 3D laser scanned to capture the field markings. That data was used to create a virtual tour, 2D CAD drawings (PT site layout and floor contours,) and a complete 3D BIM model of the site. The captured point cloud data was aligned to survey control, then to the client’s design model, further ensuring the accuracy of the data. GPRS has a verified 99.8% accuracy rate for concrete scanning, backed by our Green Box Guarantee. Laser scanning is accurate within 2-4mm. An accurate layout of post-tension cables protects tendons from damage, prevents injury and mistakes, and protects the integrity of the building. 2D plan sheets and a 2D floor contour map documenting the actual floor elevation added even more accuracy to the depth of cover that is field marked. The 3D BIM model provided the architect data to plan fit and finish designs and coordinate with contractors and MEP trades before build-out.

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3D Laser Scanning

GPRS’ Mapping & Modeling Team communicated directly with the client to model exactly what was needed, keeping costs down by avoiding unnecessary modeling effort.

GPRS provided high-definition laser scanning services at a grain elevator in Michigan to capture the existing conditions of the site. The client needed an accurate representation of the structural features to perform maintenance upgrades. They wanted specific documentation of the bucket elevator legs, fill conveyor bridges, and tower supports.

GPRS provided high-definition laser scanning services

Meta Title: 3D Laser Scanning a Grain Elevator in Michigan Meta Description: GPRS provided high-definition laser scanning services Images: Link: https://www.gp-radar.com/services/3d-laser-scanning Alt Tag: A 3D model of a steel silo. Caption: GPRS created a 3D model of the steel silo, which stood over 110 feet tall. Link: https://www.gp-radar.com/services/3d-laser-scanning Alt Tag: Screenshot of a 3D model of steel elevation. Caption: 3D model of the steel elevation shown in Edgewise software. Link: https://www.gp-radar.com/services/3d-laser-scanning Alt Tag: 2D drawings of a grain elevator. Caption: GPRS created 2D drawings, which included modeled objects and point cloud overlay. Link: https://www.gp-radar.com/services/3d-laser-scanning Alt Tag: Navisworks image of silos and bridges from ground level. Caption: This Navisworks image shows the silos and bridges from ground level. Link: https://www.gp-radar.com/services/3d-laser-scanning Alt Tag: Point cloud data of towers of a grain elevator. Caption: Point cloud data of the towers. Link: https://www.gp-radar.com/services/3d-laser-scanning Alt Tag: Screen capture of 3D Navisworks image of bucket elevator legs of a grain silo. Caption: 3D Navisworks screen capture of the bucket elevator legs. Link: https://www.gp-radar.com/services/3d-laser-scanning Alt Tag: Edgewise screen capture of grain silos and bucket elevator. Caption: This image captured in Edgewise software shows the two silos and the bucket elevator. Link: https://www.gp-radar.com/services/3d-laser-scanning Alt Tag: 3D screen capture of steel structure. Caption: 3D screen capture of steel structure showing channels and tubes. Header: A GPRS Case Study: 3D Laser Scanning a Grain Elevator in Michigan Location: Near Saginaw, Michigan Task: GPRS provided high-definition laser scanning services at a grain elevator in Michigan to capture the as-is conditions of the site. The client needed an accurate representation of the structural features to perform maintenance upgrades. They wanted specific documentation of the bucket elevator legs, fill conveyor bridges and tower supports. Challenge: This was a complex site that included the grain elevator, silos, bins, tanks, conveyors and bridges. The area laser scanned was near 180,000 square feet with heights over 110 feet. Traditional means of measuring would be difficult, costly, time consuming and potentially hazardous. Solutions: The Project Manager completed laser scanning in two days utilizing the Leica C10 and Leica P40 laser scanners. Varying the position of the scanners on the ground and between silos, the technician was able to capture this complex site from a variety of angles. Additionally, the Project Manager occupied elevated positions and tied those scans to the scans performed at grade. All the scanning could be safely performed from a distance without climbing the structure and without the need for renting lifts or scaffolding. Deliverables: The client received Autodesk Recap files of the scans (.rcs file format), black and white TruViews of the site, a 3D AutoCAD Model of the site, and section and plan views of the model laid onto the point cloud data with callouts. Added Value: GPRS’ CAD technicians communicated directly with the client to focus on key areas for detailed modeling to model exactly what was needed to keep costs down by avoiding unnecessary modeling effort. Using advanced extraction techniques and specialized software, GPRS was able to accurately represent structural features and deliver these to the client.

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3D Laser Scanning

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. GPRS delivered a 3D mesh model to assist in the creation of this mixed-reality experience.

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