Structural Design Based on Weighted Fractiles

A probability-based structural design method is introduced. The reliability criterion is replaced by a deterministic design equation, in which all random variables are substituted by appropriate design values. A design value depends upon: (1) the mean value and standard deviation of the corresponding random variable; (2) the reliability factor that reflects the acquired level of reliability; and (3) the sensitivity factor that measures the effect of the individual random variable upon the total system. Methods of application are considered.