The maximum structure height specified for each district shall not apply to: antenna and communications towers that meet the requirements of this chapter, water towers, clock or bell towers, steeples and religious symbols attached to places of worship, utility lines and poles and towers, elevator shafts, rooftop stairways, wind turbines that comply with this chapter, skylights, chimneys, heating/ventilation/air-conditioning equipment, industrial mechanical equipment areas that are not occupied by humans, or other appurtenances usually required to be and customarily placed above the roof level and not intended for human occupancy. See also definition of "height" in Article XV.