LAUSR

Abstract Out-of-plane mechanisms induced by earthquakes are typical of many masonry structures such as standing out elements (spires, battlements of fortresses, etc. ) or portions of facade badly connected to the building. The displacement-based assessment procedures in standards are based on the hypothesis of rigid block, which sometimes is unable to represent their actual behaviour; furthermore, very few information is available on dissipation, which is assumed as an equivalent viscous damping, usually kept constant to 5%. The paper illustrates the results of an experimental campaign on three mock-ups subjected to static and dynamic out-of-plane actions with the aim to verify the reliability of these assumptions for traditional irregular stone masonry panels under rocking.