ABSTRACT
The representation of the subsoil takes many forms, including historical reports, 1d borehole logs, 2d surface models, or 3d voxel grids. Consolidating all this information can be quite a challenge. Digital data models, however, offer many tools that can automate this task. For example, the newest version of IFC, IFC4.4, offers entities that facilitate the concurrent use of multiple geometric representations of the same feature, which allows us to synchronize multiple information sources. In this work, we demonstrate a method for mapping information onto geometry via color textures or voxel data and for sampling this data. Such data samples can be combined into one single data item accompanied by the uncertainty resulting from the scale, resolution, and reliability of each respective representation. We show that implementing data integration in this manner in a BIM tool can provide not just detailed insights but also evaluation documentation, surpassing the results of the manual comparison of the various input data sources.
