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.
Stair plan and section det
Wall section view detail d
Detail of foundation of fl
Different section view of
Construction detail layout
Pipeline connection detail
Foundation plan details of
Construction Details Free
Foundation plan with const
Isometric concrete joists
Foundation plan and sectio
Detailed wall section by i