Sicurezza ed autenticità dell'architettura storica: aporie e prasi operative nel consolidamento degli edifici

The issue on safety of pre-industrial architecture is particularly important, considering the damage recorded during the earthquakes that have affected not only Italy but the entire world in recent years. The increasing awareness acquired regarding the uniqueness of the ancient architectural heritage, however, highlights a need for conservation that ought to be integrated with needs concerning seismic safety. In past years, the indiscriminate use of reinforced concrete has proven not to be very effective while dealing with the need for security and is certainly detrimental to the preservation of that historical architecture which is an evidence of constructive methods that characterize a specific territory. The anti-seismic legislation, indeed, has adopted in the past some consolidation practices that did not take into account the specific situations in which the designers were working, forcing them to adopt models borrowed from the legislative dictates rather than from the constructive logics of the architectures that were to be made safe. At the end of the twentieth century there was a normative evolution that made designers responsible in order to make consolidation interventions compatible with the original construction logics. The contribution proposed here aims to exemplify some interventions focused on improving different types of historical structures in order to highlight some uncertainties that may arise from an uncritical application of the norms