Bottom floor plan.

This Architectural Drawing od AutoCAD 2d drawing is Bottom floor plan. A floor plan typically shows structural elements such as walls, doors, windows, and stairs, as well as mechanical equipment for the plumbing, HVAC, and electrical systems. Floor plans use stylized symbols that often look like the outlines of elements they represent. Plan view or planform is defined as a vertical orthographic projection of an object on a horizontal plane, like a map. The term may be used in general to describe any drawing showing the physical layout of objects. For more details and information download the drawing file.