3D Laser Scanning & VR/AR Process for BIM
What is the BIM Process?
B.I.M. = Building Information Models
- Generate and manage digital “twins” of a built asset for information records, maintenance reference, operation process, etc.
- Official ISO standard [ISO 19650 series]
Who is BIM intended for?
- Those involved in the procurement, design, construction and/or commissioning of built assets
- Those involved in delivering asset management activities, including operation & maintenance
Tools for capturing BIM’s
- 3D Laser Scanning
- Point Cloud Generation
- 360° Spherical Photographs
- Infrared Scanning
- Photogrammetry
- AI generated point clouds taken from a series of still area photographs
What are the benefits of BIM?
Early Proponent Claims:
- Improved 3D visualization
- Improved productivity and cost reduction due to easy retrieval of information
- Increased speed of information delivery to stakeholders
- Verification of original construction documents and capturing final as-built installations
- Embedding and linking of vital information such as vendors for specific materials, location of details and quantities required for estimation and
rendering
- Support for immersive safety training
How Does 3D Scanning & VR/AR Attribute to Increased Productivity Through Building Information Management (BIM) Practices?
3D SCANNING
- Preliminary field measurements for FEL1 layouts take “hours” rather than “weeks”.
- Data can be used as an as-built digital “twin” for historical build records.
- Remote project collaboration over vast distances can be achieved in full detail saving on time and travel costs.
VR/AR
- Able to “rehearse” difficult project installations, assemblies, disassembles, and/or demolitions in VR or AR before the scheduled work.
- Able to virtually access and develop projects in areas normally inaccessible during normal production schedules.
3D Scanning - The “Digital Twinning” Process
The BIM Add-On Options
How the BIM Add-on’s are Used
What is the Average Cost?
Short answer
…it depends on the LOA (Level of Accuracy) desired by the client and the total area wanting to be scanned.
- DIN 18710 standard prescribes Five (5) levels of accuracy in terms of a Std. Dev. each with aspecified range.
- LOA should be viewed as an inherit building “tolerance” as what is acceptable for the nature ofthe project criteria
(i.e. “close enough” or “dead on”)
- USIBD Document C120 & C220 addresses LOC specifications for building documentation.
USIBD LOA Criteria
- Specified at the 95% confidence level
- P.C.: Point Cloud
- HDR: High Dynamic Range used in 360° image capture function of the scanner
LOA Cost Illustration
