Enhancing Transparency and Reliability in HBIM: the Case Study of the Former IX Maggio Colony

The contribution falls within the field of architectural heritage documentation through BIM information modeling, focusing on the themes of transparency and reliability in digital representation. By developing the case study of the former IX Maggio Colony for the children of the People of the Sea, designed by Ettore Rossi (1937), an operational workflow was tested to organize and manage information in a ‘transparent’ and ‘reliable’ manner. In particular, both the sources that supported the modelling and the assessment of its reliability were included in the model. Reliability, depending on the different levels of model development (low, medium, high), was introduced through specially created parameters and conditional properties applied to the filters for its visualization in a color scale. The parameterization and the information base of the BIM have therefore been exploited to obtain a digital archive, structured and ‘reliable’, which can be offered as a useful tool for the knowledge and documentation of the building, but also as a reliable basis for future restoration activities