No building shall be erected, converted, enlarged, reconstructed or structurally altered to exceed the height limit established for the district in which the building is located. The following structures, however, may be erected above such heights: penthouses or roof structures for the housing of elevators, stairways, tanks, ventilating fans or similar equipment required to operate and maintain a building; fire or parapet walls; and skylights, towers, steeples, stage lofts and screens, flagpoles, chimneys, radio and television aerials, smokestacks, wireless masts, water tanks and similar structures. No such structure shall occupy more than 25% of the total roof area of the building or be used for residential purposes.
(Ord. 1-91, passed 3-4-1991)