Structural columns are used to model vertical load-bearing elements in a building. Although structural columns share many of the same properties as architectural columns, structural columns have additional properties defined by their configuration and industry standards. Structural columns differ from architectural columns in behavior as well.
Typically, drawings or models received from an architect may contain a grid and architectural columns. You create structural columns by manually placing each column or by using the At Grids tool to add a column to selected grid intersections.
Adding columns in 3D View
Sample grid for placing structural elements