Water towers, chimneys, smokestacks, flagpoles, radio and television towers, masts and aerials, and heating, ventilation, air-conditioning and other accessory utilities shall be exempted from height restrictions, provided said utilities do not exceed 20% of the gross floor area of the roof and that height does not exceed 10% of the building's height.
(a)
For accessory utilities atop buildings in the LIO, IO, and IC Districts, the same restrictions apply; however, the Planning Board, at its discretion, may approve an accessory utility height in excess of 10% of the building's height, provided the following:
[1]
The Planning Board shall require a visual simulation of the height and its effect on the surrounds in accordance with § 199-26X(11)(c) of this chapter; and
[2]
The building on which said utility is situated is set back from every lot line a distance at least equal to the height.
(b)
Under no circumstances shall the height of said utilities exceed 80 feet from the ground level.