[Code 1974, § 83-5.1; Ord. No. 2010-13, 10-3-2010]
The following kinds of structural appurtenances shall be permitted to exceed the height limitations for authorized uses:
(1) 
Those purely ornamental in purpose such as church spires, belfries, cupolas, domes, ornamental towers, flag poles, monuments.
(2) 
Those necessary appurtenances to mechanical or structural functions, such as chimneys and smoke stacks, water tanks, elevator and stairwell penthouses, ventilators, bulkheads, radio towers, masts and aerials, television antennas, fire and hose towers, wire transmission structures, and cooling towers.
(3) 
Those structural extensions deemed necessary for appropriate building design, such as cornices or parapet walls may extend to a maximum of five feet above the height of the building and shall have no window openings.
(4) 
The foregoing permitted exceptions may be authorized only when the following conditions can be satisfied:
a. 
No portion of any building or structure permitted as an exception to a height limitation shall be used for human occupancy or for commercial purposes.
b. 
Any structural exception to height limitations shall be erected only to such height as may be necessary to accomplish the purpose it is intended to serve, and no higher.
c. 
The area occupied by structural appurtenances may not exceed 20% of the gross area of the roof. If structural elements exceed 20% of the gross area of the roof, they shall be considered as integral parts of the whole structure and thereby shall not be eligible for permission to exceed height limitations.
[Code 1974, § 83-5.2]
There shall be no exceptions permitted for residential structures; however, certain nonresidential structures in residential districts may be permitted to exceed height limitations as specified in Article VI of this chapter.