As noted before,the cross section dimensions of all the specimens used in the eccentric
loading test were identical to those of specimen HS-H1-310-NC in the concentric load test and all were thus noncompact under uniformcompression.Further, the section as a whole was again noncompact under flexural compression because the flange was noncompact. The 2010
AISC P–M interaction equation is given as Eqs. (10a) and (10b) in the below.