Chimneys, cooling towers, elevator bulkheads, fire towers, monuments, penthouses, stacks, scenery lofts, tanks, water towers, ornamental towers, spires, wireless, television or broadcasting towers, masts or aerials, microwave radio relay structures, telephone, telegraph and power poles and lines and necessary mechanical appurtenances are hereby excepted from the height regulations of this code and may be erected in accordance with other regulations or codes of the City.