Vulnerability analysis of relevant and strategic buildings in seismic zone 3 municipalities of Lombardy region = Analisi di vulnerabilità di edifici rilevanti e strategici nei comuni in zona sismica 3 della Regione Lombardia

The vulnerability analysis is a quick solution for the identification of buildings that, because of the materials characteristics or construction quality or structural scheme, are in critical conditions with respect to their seismic vulnerability, such that either damage or collapse may occur in case of earthquake. The analysis results, carried out on concrete and masonry buildings through the filing of I and II level records /1/ /2/, are based on weighted sums of 11 (12 for concrete) parameters to which the data collectors assign a quality class, taking into account the observed situations during an inspection, the similarities with comparable buildings (with relation to the construction period and the used technology) and the geometrical features, such as the average floor area and the resistant areas. In case of vulnerable buildings, more detailed analysis will be further necessary to define the collapse mechanism and to assess, in case, the necessary rehabilitation works.