Timber-Based Retrofit of a Urm Historic Case-Study Building in a High Seismicity Region

existing heritage masonry buildings by analysing a case-study building located in Italy, in an area of medium-high seismicity. The selected retrofit strategy consists of fixing cross-laminated timber (CLT) panels to the URM walls by using dry fasteners distributed over the wall surface. The panels are applied to the inside of the building to ensure enhancement in seismic performance while preserving the external façades. In this instance, the document examines the design and modelling (FME – Frame by Macro Element) decisions made to implement such reinforcement technique, identifying the optimal configuration in accordance with structural, architectural and conservation limitations. Pushover analyses were conducted to assess the global seismic performance of the structure. The results confirmed at the building scale what previous research had experimentally demonstrated at the wallpanel level: that timber overlays significantly improve the seismic resistance and deformation capacity of masonry buildings.