The maximum height of any building or other structure, or portion thereof, shall not exceed 400 feet on any portion of subzone C-1 shown as a special height location in Appendix 3.2 of this Chapter, except that permitted obstructions, pursuant to Section 33-42, shall be allowed to penetrate a maximum height limit.

The maximum height of any building or other structure, or any portion thereof, located within subzone C-2 shall not exceed 180 feet above curb level, except that:

(a)        the maximum height of any building or other structure, or portion thereof, shown as a special height location, shall not exceed the height set forth in Appendix 3.2; and

(b)        Any portion of a building or other structure that exceeds an established height limit shall be subject to the following provisions:

(1)        The obstructions set forth in Section 23-62, inclusive, and 33-42, as applicable, may penetrate a maximum height limit.

(2)        The maximum permitted size of enclosure walls surrounding elevator or stair bulkheads, roof water tanks, cooling towers and accessory mechanical equipment may be increased by authorization of the City Planning Commission, provided the Commission finds that:

(i)        the width of such additional enclosure wall at each building face does not exceed 80 percent of the width of the enclosure wall as allowed in paragraph (b)(1) of this Section;

(ii)         the additional area of the enclosure wall at each building face is not more than 50 percent of the area permitted as-of-right; and

(iii)        the enclosure wall is compatible with the building and the urban design goals of the Special District and complements the design by providing a decorative top.

(c)        In no event shall the height of any building, including permitted obstructions, exceed 800 feet above curb level.