We use geology as a basis for interpreting ground investigations. Without knowledge of geology it is very difficult to connect the different data. The best way is to start with a conceptual 3D model of the subsurface. This model can subsequently be refined with the ground investigation data. In the Netherlands much basic information is publicly available, which can be found in the Dinoloket. In other countries the available information is often only in the form of geological maps.
A conceptual model can be converted into a 3D computer model. This is usually done with specialized 3D GIS software, such as Rockworks or GiNT. A 3D computer model of the subsurface can be used in design packages such as Civil 3D, Autocad and inserted in a BIM. This allows the information of the subsurface to be integrated into the design process.