ABSTRACT
Typically, the walls of heritage masonry buildings are not tied with wall ties, what results into the separation of walls during earthquakes and subsequent out-ofplane collapse. Consequently, when retrofitting the building for seismic loads, the tying of walls with steel ties represents the basic measure to ensure the structural integrity and utilize the resistance capacity of structural walls. In this regard, one of the objectives of the study was to investigate the possibility of omitting the installation of wall ties by placing the structure on seismic isolators. Besides, the possibility of using a simple PVC damp proof course as isolating device, has also been studied. Last but not least, the idea to replace the usual steel ties with CFRP laminate strips, placed both horizontally at the level of floors and vertically at the corners of the building, has been investigated.
