Offset columns are modeled in the program with rigid links at their offset ends. The rigid link is used to transfer offset moments due to offset eccentricity. An offset moment may not be perfectly aligned to one particular face of the column which will be the case when the offset column bottom does not lie on any of the orthogonal axes passing through the centerpoint of the supporting column. In such a case, moment is distributed on two orthogonal faces of the column based on the angle formed between the link and the local axes of the supporting column. See Section 3.4.4, Moment Split, for an explanation of how these moment at different faces is split between columns above and below.