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Building height means the vertical distance between the highest adjoining ground level at the building or ten feet above <br /> the lowest ground level, whichever is lower, and the top of the cornice of a flat roof, or the deck line of a mansard roof, <br /> or the uppermost point on a round or other arch-type roof, or the median height of the highest gable of a pitched or <br /> hipped roof.Topographic changes which elevate the adjoining ground level above the existing terrain shall not be <br /> considered in determining building height. For a pitched or hipped roof situation, regardless whether the highest living <br /> space in a building is a half-story or full story, if the highest living space contains windows (excluding skylights)the upper <br /> measuring point for defining building height shall be the median height of the top of the highest window and the highest <br /> peak of the roof. <br /> Existing ground level means the elevation of the grade at the base of an existing structure, measured at points abutting <br /> the foundation wall, or the existing grade of a vacant lot. <br /> Half story means the uppermost floor of a building in which (i)the intersection of the exterior wall and the roof is not <br /> more than three feet above the floor elevation,and (ii) not more than 60 percent of the floor area within the exterior <br /> walls of the uppermost floor exceeds five feet in height as measured from the floor to the rafters. Floors exceeding <br /> these parameters shall be deemed a full story. <br /> Story means that portion of a building included between the upper surface of a floor and the upper surface of the floor <br /> or roof next above. It is measured as the vertical distance from top to top of two successive tiers of beams or finished <br /> floor surfaces and, for the topmost story,from the top of the floor finish to the top of the ceiling joists or, where there is <br /> not a ceiling,to the top of the roof rafters.A story that meets the definition of a "basement" shall be considered as a <br /> basement and not as a story for purposes of determining the number of stories in a building. <br /> 2 <br />