Combined Biaxial Bending and Axial Compression Design Ratio

\frac{f_{c}}{F_{cEy}} + {(\frac{f_{bx}}{F_{bE}})}^{2} \leq 1.0

\frac{171}{728} + {(\frac{353}{6, 577})}^{2} = 0.24

f_c	Compression stress due to the dead and snow load
F_cEy	Critical buckling design value for the compression member in the minor axis
f_bx	Major-axis bending stress due to the wind load
F_bE	Critical buckling design value for the bending member

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