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The lateral-torsional buckling modification factor, 
for cantilevers where warping is prevented at the support and where the free end is unbraced changes to 1.0.
Lateral torsional buckling for I-shapes with a rectangular compression flange is calculating with the new equation as below:
where:
= width of compression flange
= compression flange thickness
New Flange local buckling for box section as below:
New calculation for sections with slender webs are introduced in AISC 2016 F7
Where
A new lateral-torsional buckling is added in AISC 2016. It defines the buckling load for rectangular and HSS sections as below
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| No lateral-torsional buckling |
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: the limiting laterally unbraced length for the limit state of yielding
Lateral-torsional buckling of Tee sections modified in AISC 2016 and new calculations introduced in the code. The following shows how we calculate the lateral-torsional buckling for tee section.
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| No lateral torsional buckling |
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for web in compression 
New section for local buckling of Tees leg in flexural compression is updated as below:
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Lateral-torsional buckling for single angles are also updated as below:
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Where:
