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.
Section elevation view of
Top view plan of staircase
Wall section detail
Top view layout plan and I
Column Detailed Finishes o
Construction view of wall
Section by facade with wal
Residential building detai
Staircase design and eleva
A detail BB view of the ga
Reinforce anchor bar C-1,
Staircase elevation and se