This architectural drawing is Cross sections of stairs with details in AutoCAD 2D drawing, CAD file, dwg file. Stairs are primarily used to provide a quick and easy way to transition between levels. In the past, houses and shelters had only one storey, but it was later realized that by using the space above the ground, a structure could provide more space. For more details and information download the drawing file. Thank you for visiting our website cadbull.com.