ABSTRACT
The main subject of this work is the cost–benefit evaluation of base isolated versus conventional R/C buildings. By applying well established principles of performance-based earthquake resistant design, using fragility curves obtained from bibliographic sources, integrating a probability density function representing the seismic intensity at the site, and performing approximate non-linear structural analysis, a methodology for investigating the life-cycle costs of an actual three-story R/C building is presented. Through this case study, the use of base isolation is demonstrated to be effective in reducing the life-cycle costs. In addition, by investigation of modified structural systems, it is shown that fewer restrictions are imposed on the architectural design of the building.