Here is an autocad dwg file for the Symbols for posters. the symbolic representation for different things is been mentioned in this files drawing legend.
Foundation 3D view detail
Wooden Structure CAD Block
3D Stair Design Detail
Curtain Design
AutoCAD 2D block of gas st
Pushpin controller 2d cad
Staircase design and eleva
Locker and storage
craft center design
Diwan set furniture detail
Stair case detailed drawin
Trap cad block plan in Aut