[Code 1975, § 39-12; Code 1992, § 32-97; 8-13-2001 by Ord. No. 1188; 10-10-2005 by Ord. No. 1253; 10-22-2007 by Ord. No. 1280]
No building shall be erected, converted, enlarged, reconstructed or structurally altered to exceed the height limit established for the zoning district in which the building is located, except that roof structures for the housing of elevators, stairways, tanks, ventilating fans, or similar equipment required to operate and maintain the building and fire or parapet walls, skylights, towers, steeples, stage lofts and screens, chimneys, smokestacks, individual domestic radio and television aerials and wireless masts, water tanks, flagpoles or similar structures may be erected above the height limits prescribed. In districts other than the R, R-1, and A-1 Districts, said structures may not exceed by more than 20 feet the height limits of the zoning district in which it is located. In the R, R-1, and A-1 Districts, the height of said structures shall be limited to the height of the zoning district in which it is located whether attached to the roof or ground. Domestic radio and television antennas cannot extend higher than 12 feet above the height limit of the zoning district that it is located in. Chimneys may exceed the height limits of the R, R-1, or A-1 District by a measurement deemed necessary by City code for proper ventilation. In any district, said structure may not have a total area greater than 25% of the roof area of the building, nor shall such structure be used for any residential purpose or any commercial purpose other than a use incidental to the main use of the building.