Survey methods for seismic vulnerability assessment of historical masonry buildings

On 20th and 29th of May 2012, two powerful earthquakes struck northern Italy. The epicentres were recorded respectively in Finale
Emilia (magnitude 5.9 Ml) and Medolla (magnitude 5.8 Ml) in the province of Modena, though the earthquake was formed by a
series of seismic shakes located in the district of the Emilian Po Valley, mainly in the provinces of Modena, Ferrara, Mantova,
Reggio Emilia, Bologna and Rovigo. Many monuments in the city of Mantova were hit by the earthquake and, among these, Palazzo
Ducale with the well-known Castello di San Giorgio which host the noteworthy “Camera degli Sposi”. This building, the most
famous of the city, was so damaged that it was closed for more than one year after the earthquake. The emblem of the Palace and
Mantova itself, the previously cited “Camera degli Sposi” realized by Andrea Mantegna, was damaged and all the economic and
social life of the city was deeply affected. Immediately after the earthquake, the Soprintendenza per i Beni Architettonici e
Paesaggistici of Brescia, Cremona and Mantova establish an agreement with the University Iuav of Venice, requiring an analysis and
assessment of the damage in order to proceed with the development of an intervention project. This activity turned out to be very
important not only from the point of view of the recovery of the architectural and artistic heritage but also because the city's economy
is based primarily on tourism. The closure of one of the most important monuments of Mantova has led to a significant and alarming
decline in the government income.