a.to church spires, belfries, cupolas and domes, monuments, water towers, fire and hose towers, observation towers, distribution and transmission towers, lines and poles, windmills, chimneys, smokestacks, flagpoles, and radio towers; to existing structures for solar collection devices, water catchment, green roof elements, and enhancements for energy conservation on existing buildings (roofing materials and insulation); to masts and aerials except as regulated in Section 38-109; and to parapet walls extending not more than four feet above the limiting height of the building.

b.to bulkheads, elevator and stair penthouses, water tanks, monitors, and scenery lofts, provided no linear dimension of any such structure exceeds 50% of the corresponding street lot line frontage or to towers and monuments, fire towers, hose towers, cooling towers, gas holders, or other structures, where the manufacturing process requires a greater height. Provided, however, that no such structure above the heights otherwise permitted in the zone shall occupy more than 25% of the area of the lot and shall be distant less than 25 feet in all parts from every lot line not a street lot line. Any structure in (a) and (b) may extend 20 feet above the district height limit, provided that additional height may be authorized with a Use Permit. (Ord. 3567 § 2, 2017; Ord 3414; 07/2008)