In manual calculations of G+7 buildings design, how can decided x axis moment and y axis moment for biaxial columns design in one building frame

First, the loads acting on the building must be determined, including dead loads, live loads, and lateral loads. Once the loads are known, the moments and forces acting on the columns can be calculated.

To determine the X-axis moment, the forces and moments acting in the X-direction must be considered. This includes any lateral loads acting in the X-direction, as well as the moments generated by the loads on the floors and roof. The sum of all these forces and moments will give the X-axis moment.

Similarly, to determine the Y-axis moment, the forces and moments acting in the Y-direction must be considered. This includes any lateral loads acting in the Y-direction, as well as the moments generated by the loads on the floors and roof. The sum of all these forces and moments will give the Y-axis moment.

Once the X and Y-axis moments are known, the biaxial column design can be performed by analyzing the forces and moments acting on the columns in both directions. This will ensure that the columns are designed to withstand the loads and moments acting on them in both the X and Y-directions.