No Universal Software Platform

Cooperation of models created in programs from one manufacturer is not a problem; however, when there is a need to exchange data between software from different manufacturers, smooth data exchange and information loss issues may occur. Figure 1 shows the loss of data in the export and import of models to the various stages of investment. The bottom graph presents problems arising from data loss in the model due to the lack of a universal data exchange platform and a lack of interoperability between the software used in the construction process. The downward spikes at the end of each project phase means loss of geometrical and/or non-geometrical data. These losses usually occur when the project is exported from BIM to 2D CAD format, but also during the export to IFC format or from the IFC format the model is converted to native formats. The top line represents a practically ideal situation in which data and knowledge are gradually increased throughout the duration of the project (the model is successively updated and supplemented with new information, no data loss).

**Figure 1.** The BIM curve shows data loss without interoperability at project milestones (After: [17]).

Appropriate interoperability helps to eliminate the problem of the lack of a universal information exchange platform. It seems that the activities of the buildingSmart organization striving to provide a universal foundation for sharing information and improving processes in the design and construction industry. This goal is implemented through actions to develop standards, norms, and tools supporting the exchange of information regardless of the IT platform used. Authors think that focusing on one format—IFC—and its development is the right thing to do. Working on common standards, e.g., within the EU, and a common dictionary of building terms and the BIM dictionary (which Bilal Succar does creating the new BIM Dictionary platform) and promoting such activities can lead to solutions to many problems.

Final rating of the feature (on a scale of 1–5): **2** (subjective assessment).
