مشخصات معیارهای طراحی براساس معیارهای احتمالی عملکرد طراحی

To date, reliability-based structural design standards have been developed using deterministic design procedures that are formulated to achieve target levels of structural reliability (target safety indices) without requiring explicit reliability calculations. Target safety indices have been selected to match typical safety levels in previous design standards. However, the current levels of structural safety are not necessarily the most appropriate, and it has been suggested that explicit risk-based measures of structural performance should be used to optimise the target levels of design performance. Explicit risk-based measures could be used to underpin deterministic design requirements or they could be used directly for explicit risk-based design. The paper discusses the use of risk-based measures in the development and application of design Standards. The paper also discusses broader issues related to the development of design Standards, including the influence of international standardisation.