This is a sample of "normal drafting" for a column grid layout.
It requires lots of skill to draw all the connecting and intermediate beams for this type of layout.
Even practiced and seasoned Steel Detailers, often make mistakes.
Because of they have to rely on their 3D thought process, to visualize the beams and connections, costly mistakes are common.
Most mistakes are "caught" before the steel reaches the site.
This is a better way...