Here is an autocad dwg file where there is a 3D view of the desk for office with its chair and appropriate space planning with all detailing.
Ramp stair section detail
Concrete support structure
Wall Construction of Offic
Parapet detail
Construction detail of fra
Constructive details autoa
Details of a Flat roof
Reinforced concrete struct
Foundation plan detail deg
Plan of constructive detai
A detailed view of the ter
Construction detail dwg fi