A. To church spires, belfries, cupolas and domes, monuments, electric generating stations and liquefied natural gas tanks, water towers, fire and hose towers, observation towers, distribution and transmission towers, lines and poles, windmills, chimneys, smokestacks, flag poles, radio towers, masts and aerials, or to parapet walls extending not more than four feet above the limiting height of the building;

B. To places of public assembly in churches, schools and other permitted public and semi-public buildings; provided, that these are located on the ground floor of such buildings; and provided further, that for each one foot by which the height of such building exceeds the maximum height otherwise permitted in the zone, its side and rear yards shall be increased in width or depth by an additional foot over the side and rear yards required for the highest building otherwise permitted in the zone;

C. To bulkheads, elevator and stair penthouses, water tanks, barns, silos, monitors and scenery lofts, provided no lineal dimension of any such structure exceeds 50 percent 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 structures above the heights otherwise permitted in the zone occupy more than 25 percent of the area of the lot and are distant less than 25 feet in all parts from every lot line not a street lot line. (Ord. 1212 § 1, 1969; prior code § 33.1001 (C)).