The height limitations contained in the Schedule of District Regulations do not apply to spires, grain elevators, belfries, cupolas, antennas, water tanks, ventilators, chimneys, or other appurtenances usually required to be placed above the roof level and not intended for human occupancy. Although exempted from structural height limitations, these structures should not significantly impair solar access of buildings or solar collector locations. Not an exception to height regulations are dishes for receiving of telecommunications. When placed on buildings, telecommunications dishes shall be limited to the height restrictions as placed on buildings in the district.