(a) The height regulations prescribed herein shall not apply to television and radio towers, church spires, belfries, monuments, tanks, water and fire towers, cooling towers, ornamental towers and spires, chimneys, elevator bulkheads smoke stacks, conveyors, and flagpoles, except where the height of these structures will constitute a hazard to the soft landing and take-off of aircraft at an established airport.
(b) Public, semi-public, or public service buildings, hospitals, institutions, or schools, where permitted, may be erected to a height not exceeding 60 feet and churches and temples may be erected to a height not exceeding 75 feet, except when the required side and rear yards are increased by one foot for each foot of additional building height above the maximum permitted by this zoning code for the district in which the building is located.