With reference to building height, an essential component, other than a sign or flag pole, that protrudes above the roof of a building and which is necessary for the functioning of a building including, but not limited to:
(a) an elevator housing;
(b) a mechanical penthouse;
(c) a chimney;
(d) solar collectors;
(e) portions of a building or a structure used to provide screening of mechanical systems or equipment located outside of a building; or
(f) an architectural feature commonly associated with a Place of Worship.