297 727

where

A1 =(0.5 h - tf + dcorr)(tw - 2dcorr) y1 = 0.5(0.5h - tf + dcorr)

Applying a bias factor of 1.11 and the coefficient of variation of 0.12 for the yield strength of steel (Nowak and Collins 1995), the yield strength of steel is a normally distributed variable with a mean of 394 MPa and a standard deviation of 47.2 MPa. Simulation using these parameters provides a moment capacity for the beam shown in Table 36.2.

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