3D technologies for cultural heritages

This paper presents a procedure of dynamic identification for slender monuments, such as towers and bell-towers, based on the use of impulsive dynamic actions, applied by means of a pendulum provided with a piezoelectric force transducer for measuring strength, and on the interpretation of data by means of a numeric model. It also gives the results of the studies made with this procedure on the fourteenth century bell-tower of the Church of the Badia in Florence.