Seismic vulnerability analysis

Seismic vulnerability analysis and evaluation of buildings for engineering verification are aimed at objectively determining, through the assignment of a unique numerical indicator, the ability of structures to withstand the actions and stresses caused by a seismic event. This type of investigation is essential to determine and understand how sensitive a building is to earthquake-induced actions and also allows for the identification of areas of greatest criticality on which to intervene in a targeted manner with improvement and adaptation works. The verification process can be described by the following activities:

• The historical-critical analysis of the technical documentation in possession and the building records
• The structural survey and performance of nondestructive testing to determine the least disturbance to building use
• Performing numerical analysis with different structural calculation methods according to the complexity and type of the building
• The determination of seismic risk indicators and the identification-through graphic drawings-of a clear interpretation of the most critical areas
• The design of seismic improvement and retrofitting, if any

Seismic vulnerability analysis of existing buildings is regulated by theP.c.m. Ordinance March 20, 2003 no. 3274 and from the d.d.u.o. Nov. 21, 2003 no. 19904 of Lombardy Region and is carried out in compliance with the Technical Standards for Construction (Ministerial Decree January 17, 2018). At the end of the verification process, a summary report is prepared containing the necessary data to be forwarded to the Department of Civil Defense and the School Building Cadastre, which can be used in the compilation of applications for funds for seismic improvement of buildings (PNRR Calls).