AS-BUILT

BIM MODELS

AS-BUILT BIM MODELS

Using a point cloud obtained from 3D laser scanning a BIM (building information modeling) model can be generated through programs such as Autodesk Revit. BIM models are 3D CAD models used commonly in civil engineering and architecture to model structures and other elements such as mechanical, electrical, and plumbing installations (known as MEP). From a 3D BIM model, 2D documentation such as floor plans, ceiling plans, and sections and elevations can be automatically generated. Currently, most BIM formats are not interchangeable, and exchanging data types between different BIM programs can result in problems. Subsequently, we will natively create the BIM file using the software used by the client to mitigate issues with compatibility. Through data achieved from 3D laser scanning, we are able to generate as-built BIM models to update existing models as well as create new BIM models to most accurately reflect how a structure is actually built instead of how it was originally designed. Moreover, data captured through 3D scanning can be created into a digital twin model. As with any 3D modeling, the specifications or the level of development (LOD) is imperative with higher LOD specifications signifying higher development (as shown below).

EQUIPMENT USED

  • Terrestrial 3D Laser Scanner: Leica RTC360

    (3D Accuracy: 1.9mm)

  • Terrestrial 3D Laser scanner: Faro Focus S 150

    (3D Accuracy: 2mm)

  • Terrestrial 3D Laser Scanner: Leica BLK360

    (3D Accuracy: 4mm)

  • Metrology-Grade Handheld 3D Scanner: Shining FreeScan UE Pro

    (3D Accuracy: 0.02mm)

  • Laser Tracker CMM: Faro Vantage S6 Max

    (Accuracy: 0.016mm + 0.0008mm/m)

  • Arm CMM: Faro Quantum Max

    (3D Accuracy: 0.030mm)

  • Total Station: Leica FlexLine TS10 1” R1000

    (Accuracy: 1mm, Angular Accuracy: 1s)

  • RTK GNSS: Leica GS18 T GNSS RTK Rover

    (Accuracy: 8mm)

  • GPR: Radiodetection LMX200

  • Handheld XRF Analyzer: Skyray Explorer XRF

  • Ultrasonic Thickness Gauge: Olympus 38DL PLUS

    (Accuracy: 0.001mm)

  • Sphere Targets

Practical Applications Include

  • As-built Modeling of Structures and Buildings

  • Plant Design Models & Digital Twin

  • 2D CAD Documentation

  • Volume Surveys & Topographic Information

  • Clash Detection

  • Deformation Surveys & Wear Analysis

  • GPR (Underground Mapping)

  • Dimensional Control & Alignment

  • Georeferencing

  • XRF & Thickness Analysis

APPLICATIONS

POINT CLOUD TO BIM MODEL

POINT CLOUD

*Point density of Above point cloud was reduced by 99% in order to upload to web viewer. Actual point cloud is much more detailed.

BIM MODEL

BIM MODELS