ABSTRACT
In this paper some fundamental issues of seismic risk management some are addressed. In particular, the main topic is providing some effective tools to management and mitigate seismic risk. In the last years, many efforts have been carried out in order to investigate about the seismic risk of building stock. These studies have been made considering only the priority based on the seismic risk of buildings but they may be considered substantially insufficient. In fact, new and correct strategies must consider several important questions as the social and economical convenience related to the seismic retrofit of existing building. The fundamental question is the accurate definition of damage states for each building type and their economic quantification. In this paper, these different aspects are considered in order to obtain a rational instrument to perform retrofitting investment based on the relationship between cost-effectiveness-suitability. In particular, optimal choice should be made in order to Fragilty Curves that should be considered to correctly evaluate the repair/retrofitting costs.
