A new code approach to the seismic vulnerability assessment of historic masonry buildings

The new seismic code currently in force in Italy has been completely renovated, especially with regard to the approach to existing masonry structures. Particular attention is paid to proper diagnosis, assessment and intervention measures. The paper presents an example of the application of the code on a historic aggregate building that suffered several modifications during the centuries, characterized by the presence of retrofitted structural units with rigid floors and structural units with lack of connections at each storey. The main difficulties in the interpre-tation of the seismic behaviour of the building are described.