(a)        Subdistricts A, B, C, D, E and G

The provisions of Section 33-42 (Permitted Obstructions) shall apply to all buildings within Subdistricts A through E and G, except that dormers may penetrate a maximum base height in accordance with the provisions of paragraph (c)(1) of Section 23-621 (Permitted obstructions in certain districts).

(b)        Subdistrict F

In Subdistrict F, the provisions of paragraph (f) of Section 33-42 shall apply, except that for towers above a height of 350 feet, rooftop mechanical structures shall comply with the tower top articulation provisions set forth in Section 93-569.