Using Rhinoceros, the .dwg file From AutoCAD have been imported. 3D objects created with AutoCad can also be imported into Rhinoceros.

 Diagram above shows orthographic drawing to further help for the 3D model's construction.

 Overlaying Plan and Elevations to get correct height before modelling starts.

Creating surfaces using Planar Surface tool to be extracted.

Surface created are extruded to form columns,

Completion of extruding columns.