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.
Staircase section, plan an
Bridge plan and elevation
Classroom and kitchen cons
Construction detail dwg fi
Ground floor plan to roof
Construction view of secti
Arch blocks
Work shall details for cla
Stair section detail and c
Foundation and column sect
Dilatation car plant layou
Roof plan detail with roof