4.3.6 Strong Column/Weak Beam
The moment capacity of the columns is greater than that of the beams.
The deficiency is in column capacity. Compare the sum of the beam moment capacities to that of the column capacities. Include the participation of the slab in the beam capacities. The moment capacity to be compared is the plastic moment, Mpr. The ratio of the sum of the Mpr for the columns to the sum of the Mpr for the beams is required to be not less than 1.2. Conforming buildings which do not meet this criteria shall be placed in SPC 4.