On the basis of the experience gained on the occasion of the Umbria-Marche, Italy, 1997 earthquake, the research investigates the seismic vulnerability of the masonry buildings realized with traditional non-aseismic techniques. Specific reference is done to the building typologies that are typical of the villages and the towns located in the central Italy area along the Apennines chain. Using the damage analyses already performed by the Authors with reference to the above mentioned earthquake the most frequent crisis mechanisms and the corresponding activation causes are identified. Effectiveness of alternative retrofitting techniques is discussed.
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