Publication | Closed Access
Consistent Partial Safety Factors
90
Citations
0
References
1971
Year
Safety CaseEngineeringIndividual CodeVerificationSafety ScienceInjury PreventionSystem ReliabilitySoftware AnalysisFormal VerificationStructural EngineeringReliability-based DesignReliability EngineeringFormal PostulatesRisk ManagementSystems EngineeringSafety CriterionReliability AnalysisStatisticsReliabilityDesignComputer EngineeringStructural ReliabilitySoftware DesignSafety EngineeringConstant ReliabilityReliability ModellingFormal MethodsSafety Analysis
Several reliability‑based structural code formats have been suggested in recent literature. The study compares the logical structure, differences, and similarities of these codes against a set of formal postulates. The authors outline a set of formal postulates—including load and strength nature, design procedure, constant‑reliability design principle, and code‑format postulates—to structure the comparison. They demonstrate that a partial safety factor format can be calibrated to achieve nearly constant reliability in a member‑by‑member design theory, providing explicit results for a simple second‑moment theory and illustrating calibration with an example.
Several reliability-based structural code formats have been suggested in recent literature. To clarify their logical structure their differences and similarities are compared with reference to a set of formal postulates. Such a set is outlined and explained in detail: a postulate concerning the nature of the load; of the strength; a design procedure; a design principle (constant reliability with respect to a formal model and a body of knowledge); and other postulates relating to the format of an individual code. It is shown how a partial safety factor format can be calibrated to achieve nearly constant reliability within the framework of a member-by-member design theory. Explicit results are given for a simple second moment theory, and calibration is illustrated by an example.