Seismic- energetic and architectural integrated retrofit through BIM method. A case of study in Italy.

The paper presents the outcome of an applied experimentation on a property located in an Italian city with high seismicity and the subject of an integrated energy and technological seismic retrofit intervention. The intervention, right from the criticality analysis and definition phase, was set entirely following a BIM methodology for data collection and parametric modeling for the description of the structural and building system and for the identification of renovation and improvement intervention strategies. building performance (safety, thermohydrometric wellbeing, visual and environmental wellbeing) (1). Through the elaboration of a single model it was possible to derive specific models for the diagnosis and definition of integrated interventions, made feasible also through the synthetic control of costs and implementation times. At the end of the experience, the building has its own dynamic as built digital model that contains a set of data organized for the manager / owner that allows the building's life and use to control and monitor energy consumption, well-being and safety. The research is part of the ever-evolving BIM framework, a theme of central interest for modeling, assuming that the construction of a digital twin (DT), could be the meeting point of two visions of representation of the reality, so far antithetical: that which is based on the creation of theoretical models to describe physical phenomena, and that instead based exclusively on data collected and measured in the field. The first approach leads us to white box models, the second to black box. The research opportunity was to explore the amount of shades of gray that exist to define digital models capable of simultaneously tracking the activity of their real copies step by step. The availability of more and more powerful sensors, capable of transmitting data in real time, of a large computing power distributed in the cloud and the emergence of technologies such as 5G suggest a near future in which the goal can also be achieved in the sector of civil engineering and architecture works.