Lateral buckling is one of collapse modes of H-shaped beams and the effects of boundary conditions and end moment ratio on lateral buckling mode have not been clarified yet. The purpose of this paper is to propose new factors for evaluating lateral buckling strength. These factors are relevant to each conceivable condition based on elastic lateral buckling analysis in which boundary conditions and end moment ratio are considered. Also, in this paper the adaptation validity of these factors is mentioned through reviewing and comparing the previous studies subjected to evaluation of lateral buckling strength.
