Report - PEER - University of California, Berkeley

(3) An international web-based repository should be developed and maintained forperformance data and information of interest in the context of performance-basedearthquake engineering, including a stakeholder encyclopedia (describing anddefining performance in a manner meaningful to the stakeholders) and fragilitydata for structural, nonstructural, and content components and systems. As partof this effort, protocols should be developed for testing and documentation ofexperimental results.Working Group on Implementation of PBEE in Engineering PracticeCo-Chairs: Hamburger and KabeyasawaRecorder: BommerWorking Group Members: Alcocer, Aschheim, Aydinoĝlu, Bonelli, Booth,Chopra, Cosenza, Deierlein, Fajfar, Fardis, Fischinger, Ghobarah, Kowalsky,Krawinkler, Kunnath, Negro, Otani, Pinto A., Rutenberg, Shiohara, Sritharan,Tsai, Tso, Dolšek, Marušić, Peruš, Poljanšek, Sigmund, ZevnikConclusions and Recommendations(1) Performance-based seismic design can be viewed as a process of systemconception followed by an assessment procedure in which the performance of thestructural system is evaluated and improved as needed to satisfy statedperformance objectives. Design tools should be developed, particularly for newstructures, to assist in the conception of an effective structural system in order toprovide a good starting point for subsequent assessment. Direct design, withoutsubsequent assessment, is a feasible option for simple structures.(2) The foundation of PBSD procedures should be reliability based. Forimplementation in engineering practice, the reliability concepts may beincorporated implicitly through appropriate demand and capacity factors, whileexplicit incorporation of reliability concepts is an option to be consideredprimarily for major facilities with special performance requirements. Reliabilityconcepts should also be considered to improve and transition existing code-baseddesign methods and to improve the calibration of prescriptive rules in existingcodes. They may also be partially introduced into codes to aid the transition tofull use of PBSD.(3) PBSD concepts should be incorporated into codes on a worldwide basis, but withdue consideration to the need for simplicity and for sound engineering judgment,and with due consideration of economic and societal priorities.(4) Opportunities should be sought out to demonstrate the feasibility and advantagesof PBSD approaches compared to presently employed prescriptive approaches.(5) Future guidelines and codes must be clear regarding the limitations in the use ofthe different analytical procedures (linear static, nonlinear static, linear dynamic,xiv