The height limitations of this chapter shall also not apply to church spires, belfries, cupolas, monuments, observation towers, transmission towers, chimneys, smoke stacks, ventilators, HVAC, water towers, parapet walls less than six feet in height, elevators, flagpoles, masts or other appurtenances usually located above the roof of a building or structure and not intended for human occupancy. The total height of such structures shall be no greater than the smallest horizontal distance between any facade of the structure and the property line closest thereto. Where authorized by the Zoning Hearing Board as a special exception, an increase to this maximum height limit may be permitted where it is demonstrated that the structure incorporates safety features, which, in the event the structure is toppled, will prevent it from falling beyond the boundaries of the property. Additionally, the granting of such exception is contingent upon adherence to other applicable Township codes.