During the shell construction phase, there is a need to verify planned and installed openings with regard to dimensional accuracy and positioning. Due to the large number of openings or limited accessibility caused by great heights, manual inspection is hardly feasible on large construction sites.

For this reason, an alternative and innovative verification approach was applied on the MIN Forum project – a new university building consisting of two buildings with approximately 45,000 m² for students of mathematics, computer science, and natural sciences. Using laser scanning and the Imerso software, a scan-to-BIM comparison was carried out. With minimal effort and a short onboarding phase, deviations in openings can be detected, thereby preventing later problems during installation.

In this webinar, the comparison process as well as various other use cases – such as automatic as-built model adjustments – are presented, and different application scenarios of construction vs. BIM comparison are discussed.