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That portion of a building included between the upper surface of any floor and the upper surface of the floor next above, except that the topmost story shall be that portion of a building included between the upper surface of the topmost floor and the ceiling or roof above.
It shall include any mezzanine, or intermediate level, the area of which does not exceed 33 1/3% of the total area of the floor, provided that the mezzanine is an open and integral part of the story of which it is a portion and there is no more than one mezzanine level per story.
(a) Basement. Space located below the first story of a building when such space is of sufficient floor to ceiling height for legal occupancy.
(b) Story, First. The highest building story with a floor level which is not more than six feet above grade at the centerline of the frontage of the lot where grade is defined.
(1) Grade. For purposes of this definition, "grade" is the point of elevation of the finished surface of the ground, paving or sidewalk at the property line located along primary frontage, i.e., any street frontage between two consecutive streets or alleys where the total street frontage is entirely within a Chinatown Mixed Use District. If the lot has more than one property line or no property line located along primary frontage, the Zoning Administrator shall choose the property line facing a street or alley where the grade is defined. In such situations the Zoning Administrator shall favor streets which serve as major transportation routes, major or secondary thoroughfares, and streets along which other commercial districts are located. When the property line is five feet or more from the building frontage, grade shall be taken at the surface of the ground, paving or sidewalk along the building frontage.
(2) The provisions of Section 102.11 of this Code shall apply to define the point of measurement at grade where the building steps laterally in relation to the street used to define "grade."
(c) Story, Second. The story above the first story.
(d) Story, Third and Above. The story or stories of a building above the second story and below the ceiling of the topmost story of a building.
(Added by Ord. 131-87, App. 4/24/87)
(Added by Ord. 131-87, App. 4/24/87; repealed by Ord. 75-12 , File No. 120084, App. 4/23/2012, Eff. 5/23/2012)