I would suggest to add Grid system at column bases and also create floor levels.
This would help us to isolate the grid views & floor levels during the time of geometric modelling.
Grid Manager (As available in Steel AutoDrafter Workflow)
This Feature is found very Good for all the 3 Axes Views.
Drawing1.dwgDrawing2.dwgDrawing3.dwgDrawing4.dwgDrawing5.dwg