Nowadays, building information modelling can be used by professionals to create parameterised and visualised databases of complex buildings. Specialised BIM modelling software is available which, in addition to the 3D architectural visual model, can be used to implement as a database various building materials, geometric and spatial parameters, construction costs, building physical properties, sustainability factors, etc., from the design documentation to the creation of digital twins for use in operation. From architectural, mechanical and structural engineering parameters, to acoustic characteristics and fire safety parameters, the BIM methodology serves a wide range of design disciplines. The BIM methodology provides suitable solutions for a wide range of construction design, construction and operation activities, but it is problematic to deal with complex technical tasks that need to manage quantitative and qualitative parameters in context, such as evacuation planning, fire spread, or heat and smoke control. In their paper, the researchers show how complex systems such as evacuation engineering can be parameterised in a complex way in BIM models. The authors describe how the technical characteristics and engineering solutions for evacuation can be implemented in BIM models in such a way that the complex system can be represented as a digital twin and preserve the fire safety characteristics required for evacuation as complex data, from structural requirements to geometric dimensions to the encoding of human behaviour. In their research, the authors demonstrate that complex fire protection parameters can be encoded in models at higher BIM levels and prove that the use of BIM models in evacuation simulations results in a more understandable and transparent visualization compared to traditional evacuation simulations. The researchers’ results suggest that the solutions to today’s complex engineering problems can be improved by modelling complex fire safety features using BIM methodology.