Abstract

After developing a foreward about the evolution of legislation in Italy on the subject of seismic prevention applied to architectural heritage, the survey deals with the topic of the possible limitation of economical costs and physical impacts connected to seismic improvement. On the basis of other researches as well, it observes how interventions of contrast of out-of-plane displacement mechanisms - the most dangerous for historical buildings - can be made with more limited costs and impacts if compared to the interventions aiming at contrasting the mechanisms of shear failure, that more rarely lead to collapse and are caused by seisms having a higher level of energy. Taking into consideration technical-regulatory observations applied to a recent intervention, the difficulties in the application of recent regulations about fiscal deduction of anti-seismic works to the historical frame are pointed out, and some remedial actions are suggested to lead to the starting of a wider and more widespread «production of prevention».