The height limitations of this Ordinance shall not apply to farm silos, church spires, belfries, cupolas and domes not used for human occupancy nor for municipal water tanks or municipal towers.

Chimneys, ventilators, skylights, water tanks, television and radio antennas and similar features, and necessary mechanical appurtenances usually carried on and above the roof level, may exceed the height limitations of this Ordinance by not more than 15 feet. If such equipment is construed as a secondary structure, apart from the primary structure, the height restriction of this Ordinance shall apply.