Journal of Information Technology in Construction
Journal of Information Technology in Construction
ITcon Vol. 31, pg. 75-105, http://www.itcon.org/2026/4
Automated geometry-based analysis for object-level Scan-vs-BIM validation of TBE components
| DOI: | 10.36680/j.itcon.2026.004 | |
| submitted: | July 2025 | |
| published: | February 2026 | |
| editor(s): | Bosché F | |
| authors: | Tristan Kinnen (corresponding author)
Geodetic Institute and Chair for Computing in Civil Engineering & Geo Information Systems, RWTH Aachen University, Germany https://orcid.org/0000-0002-1837-2131 kinnen@gia.rwth-aachen.de Jörg Blankenbach Geodetic Institute and Chair for Computing in Civil Engineering & Geo Information Systems, RWTH Aachen University, Germany https://orcid.org/0000-0002-5700-8818 blankenbach@gia.rwth-aachen.de | |
| summary: | Technical building equipment (TBE) systems offer significant potential for energy savings that can be realized through digital twins and simulations. Digital twins require a precise virtual representation of the real object. Geometric-semantic models originating from Building Information Modeling (BIM)-based planning can be a valuable basis for this. However, due to unavoidable deviations between planning and construction, a high-quality comparison of as-planned and as-built data is crucial. This study presents a geometric and statistical analysis framework for component-specific validation of TBE systems using as-planned BIM models and as-built point clouds. The framework was evaluated on datasets of increasing complexity, from simulations to real-world projects. Results show that with sufficient data quality, the framework enables the validation of up to 88% of components, significantly reducing manual effort, cost, and time. However, as a geometry-based approach, its performance is affected by data quality issues such as point cloud noise and occlusions. | |
| keywords: | as-planned vs. as-built, building information modeling, scan-vs-BIM, technical building equipment | |
| full text: | (PDF file, 1.99 MB) | |
| citation: | Kinnen, T., & Blankenbach, J. (2026). Automated geometry-based analysis for object-level Scan-vs-BIM validation of TBE components. Journal of Information Technology in Construction (ITcon), 31, 75-105. https://doi.org/10.36680/j.itcon.2026.004 | |
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