The maximum height limitations of the zoning districts within this chapter shall not apply to the following: water towers, clock or bell towers, steeples and religious symbols attached to a place of worship, electrical transmission lines, elevator shafts, skylights, chimneys, heating/ventilating/air conditioning equipment, industrial mechanical equipment areas that are not occupied by humans, roof-mounted solar panels, antennae and communication towers that meet the requirements contained in this chapter, and other appurtenances usually required to be and customarily placed above the roof level and not intended for human occupancy.