202.65

including areas used for human occupancy in basements, attics, and penthouses, as measured from the exterior faces of the walls. It does not include cellars, unenclosed porches, or attics not used for human occupancy, or any floor space in accessory buildings or in the main building intended and designed for the parking of motor vehicles in order to meet the parking requirements of this Ordinance or any such floor space intended and designed for accessory heating and ventilating equipment. It shall include the horizontal area at each floor level devoted to stairwells and elevator shafts.