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One of the most important parts of construction work is the verification of the geometry of the parts of structures and buildings constructed. Today this procedure is often semi- or fully automated. The paper introduces an approach for the automated verification of parts of buildings, by comparing the design of a building (as-planned model), derived from a Building Information Model (BIM) in an Industry Foundation Classes (IFC) exchange format to a terrestrial laser scanning (TLS) point cloud (as-built model). The approach proposed has three main steps. The process begins with the acquisition of information from the as-planned model in the IFC exchange format; the second step is the automated (wall) plane segmentation from the point cloud. In the last step, the two models mentioned are compared to determine the deviations from the design, and the as-built wall flatness quantification is also executed. The potential of the proposed algorithm is shown in a case-study.

Building information modeling (BIM) is a key approach for the digitization of the sector. Therefore, states worldwide put BIM at the center of their construction digitalization strategies. However, strategies vary significantly, and so does BIM implementation and its adoption over time, thus making the comparison between countries considerably challenging. Therefore, the first part of this article provides a comprehensive review of available publications in the field of BIM adoption at the national and international level. BIM adoption in Slovakia is systematically analyzed based on an anonymous online BIM survey that focuses on various areas of BIM. The focus of the BIM survey was on the assessment of the readiness of experts who work with BIM methodology, their maturity, skillsets, and BIM adoption motivation, along with the means of communication and collaboration using Common Data Environment (CDE). Furthermore, we focused on the project management perspective, which covers the existence and compliance with BIM execution plan (BEP) evaluation. In the concluding part, requirements, barriers, and future developments are discussed in detail. The BIM survey provides an insight in the current state of the art of BIM in the industry that allows for a better understanding of its potential and a more informed development and implementation of BIM strategies. This study is an important contribution to BIM and digitalization benchmarking that provides valuable information to digitalization policy makers at the governmental and business levels. [ABSTRACT FROM AUTHOR]