ABSTRACT
A short description of the structural damage to buildings, observed by the Authors after the 1997 Umbria and Marche earthquake, is made. Buildings are grouped in four types, according to their seismic response. In the first type buildings of the historical centers, that have generally shown a good seismic behaviour, are included. A second type includes poor quality stone masonry buildings, heavily damaged by the earthquake near the epicenter. The buildings that were previously retrofitted and the reinforced concrete buildings are respectively included in a third and fourth building type.
