This calculation does not include architectural features, church
spires, chimneys, flagpoles, antennas, and weather vanes. Also, this
calculation does not include roof-mounted solar energy systems, plumbing,
electrical, heating, ventilating and air-conditioning mechanical equipment,
provided that it does not exceed four feet from the highest point
of the roof where it is located. Finally, this calculation does not
include that portion of a building necessary to accommodate an elevator
overrun, provided that it does not exceed four feet from the highest
point of the roof where it is located.