L’apparecchiatura costruttiva in ambiente BIM: il rigore semantico verso la deriva? Una riflessione sulle chiusure orizzontali in chiave “analogica” e nella trasposizione “digitale”.

The subject matter on which we intend to start a reflection is anything but marginal. Thinking about the cultural framework of the building structure (substructure+superstructure), also through its rigorous terminological classification, seems to have lost the need attributed by the founding fathers of Architecture Engineering; their aim was to find a shared communication through which a univocal engineering education and research based on theoretical basics, to then translate into application solutions, were possible. The formulation was supported by regulatory guidelines that have partly followed the disciplinary scheme, but have deviated from it in the general framework assuming the setting of the regulatory requirements. Nevertheless, even if with different declensions, they have maintained a terminological coherence. What happened with the digitization and the entry of parametric design has yet to be assimilated and deepened, in order to understand the scientific assumptions of classifications used for the structure of the various BIM modelling softwares. With reference to floor construction, we decided to analyse this semantic cross-section to understand the reasons for the mutations of a consolidated memory and the principles at the basis of each classifying intention, up to those assumed by the innovation introduced with digitization. The purpose was to understand if it is a question of cultural or linguistic differences, or if we need to wait for the timing of the transition and critically contribute to reviews consistent with our disciplinary sector.