SOCIAL SYSTEM FOR PERFORMANCE BASED DESIGN (P.B.D.) OF BUILDING STRUCTURES -- ITS PERSPECTIVE AND KEY ELEMENTS

摘要

In order to make buildings actually performance-based-designed, new "Social System" has to be developed, which is composed of various supporting devices for Performance Based Design (PBD) practice like codes/rules, institutions, technical tools, information systems, etc. PBD can be modeled (assumed) to be conversion between three phases of information related to structural performance: "Design Brief, "Design Criteria", and "Design Solutions." The new Social System has to function to ensure sufficient reliability of conversion between the three phases mentioned above, as well as to support clients to concretize their needs and to prepare appropriate environment for PBD practitioners. It needs to be developed to cover any of three types of PBD practice: "Individualized objective-oriented type", "Standardized verification method type" and "Dependent on deemed-to-satisfy solutions type." Various elements need to be developed within the above-mentioned framework. Quality assurance, related information managing system, data base of reference technical information, independent bodies to provide related technical services, information system on engineers/organizations, and insurance system suitable for PBD practice are examples of the key elements.