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I-shaped members and channels bent about their minor axis flexural design are done automatically, according to AISC 360-16.

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The limit state of flange local buckling does not apply for to sections with compact flanges.
For sections with noncompact flanges The nominal flexural strength, M_n, is calculated below for sections with noncompact flanges.

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body	--uriencoded--$$ \normalsize M_n = M_p-(M_p-0.7F_yS_y) \bigg( \dfrac%7B\lambda-\lambda_%7Bpf%7D %7D%7B\lambda_%7Brf%7D-\lambda_%7Bpf%7D%7D \bigg) \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; (F6-2) $$

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body	--uriencoded--$$ \normalsize \lambda = \dfrac%7Bb_f%7D%7Bt_f%7D \; \; ; \; \; \lambda_%7Bpf%7D = \lambda_%7Bp%7D \; \; ; \; \; \lambda_%7Brf%7D = \lambda_%7Br%7D $$

For sections with slender flanges the The nominal flexural strength, M_n,, is calculated below for sections with slender flanges.

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body	--uriencoded--$$ \normalsize M_n = F_%7Bcr%7DS_y \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; (F6-3) $$

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body	--uriencoded--$$ \normalsize F_%7Bcr%7D = \dfrac %7B0.69E%7D%7B\Big( \dfrac%7Bb%7D%7Bt_f%7D \Big)%5e2%7D \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; \; \; \; \; \;\;\;\;\; (F6-4) $$

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