This is a floor plan example of national gallery. Floor plans are a type of orthographic projection used to depict the arrangement of rooms within structures as seen from above. They may be created as part of the design process or to offer building instructions, and are frequently accompanied by additional drawings, schedules, and specifications. Key measurements and levels may be included, as well as hatching, symbols, and other common annotations and abbreviations to indicate materials, fittings, and appliances. EdrawMax helps you draw a floor plan in a few simple steps.