P-Delta effect due to gravity loads on the building is considered by means of a single leaning (gravity) column pinned at its base mass have a significant effect on the dynamic response of the braced frames, the tributary floor mass at each floor level has also been included in the analytical models. The leaning column is constrained to have the same lateral displacement as the adjacent braced frame column at each floor level. This is achieved by using rigid link beams with pinned ends at each floor level between the braced frame and the leaning column. The size of the leaning column is considered as the algebraic sum of the cross section properties of all gravity frame columns contributing the P-Delta effects to the braced frame. All gravity loads are applied at the respective nodes along the height of the leaning column.?

I do not understand the above said load that should be applied on to the leaning column?