ABSTRACT
Performance-based design (PBD) is rooted in more advanced seismic design approaches and allows an owner to choose seismic hazard and performance levels in order to manage risk better. Performance objectives are the first step in PBD. PBD provides a rational approach to design for improved performance or greater seismic risk than traditional approaches. PBD allows an owner to be proactive in choosing the level of risk and performance of their building. It is not for every project, but, when used, brings additional thought and clarity to the design. Risk consists of two parts: exposure and hazard. In performance-based seismic design, exposure relates to performance levels, and hazard is the ground-shaking intensity. The foundation of PBD is pairing building performance with seismic ground-shaking intensity. Seismic analytical methods are not unique to PBD, but are a fundamental part of it.
