This architectural drawing is Basement plan of multistory building in detail AutoCAD drawing, dwg file, CAD file. A basement, which is a portion of a building structure that is totally or partially below ground, can be a godsend for a home owner provided it is designed, planned, and properly maintained. When it was primarily used to store crops and food items, it was commonly known as a "cellar" in its earlier days. For more details and information download the drawing files.