D5.6 – BIM-based Standard Test Methods for Geometric Quality Control v2

The COGITO Deliverable D5.6 “BIM-based Standard Test Methods for Geometric Quality Control v2” documents the COGITO Geometric Quality Control solution and presents the second and final iteration of the development activities in T5.3 “BIM-based Standard Test Methods for Geometric Quality Control”. Overall, the Geometric Quality Control solution aims to perform detailed geometric and dimensional tolerance checking automatically by analysing the as-built data (laser scanned point clouds) and as-planned data (project BIM model). The output results contain detailed information of each rule used, its tolerances and the results obtained from all rule instances applied on the given project.

The Geometric Quality Control solution, called GeometricQC tool, is a set of modular open-source components and sub-components. It is delivered as a service that can run from the command line on any operating system or as a webservice. The GeometricQC tool works in two different phases. The first one is the offline pre-processing phase (in charge of the GeometricQC offline processing component) when it extracts all the relevant information from the as-planned data to define the set of geometric QC tolerance checks that are to be conducted during the project’s construction phase. The second phase is the active geometric tolerance verification (performed by the GeometricQC active geometric quality control analysis component) when all the as-built data are processed and analysed to obtain detailed results for each of the geometric quality control instances that were detected in the pre-processing phase.

The present documentation of the Geometric Quality Control solution, along with its components, is oriented towards the functionalities they deliver, the technology stack they build upon, the inputs, outputs and APIs they expose, the installation instructions, the assumptions and restrictions, the applications examples, the development and integration status, and the requirements coverage. In this second and final release, the COGITO GeometricQC tool implements all the envisaged functionalities (i.e. IFC file interpreter, automatic generation of QC instances, active as-built dimensional analysis), and its usage is illustrated and evaluated based on artificial case examples, obtained during the development of the components.