81-142 Special Frontage Regulations
(a) Transparency requirement
On wide street frontages in underlying C5 Districts, at least 50 percent of a building's street wall surface shall be glazed and transparent at the ground floor level, and not more than 50 percent of such transparent surface shall be painted. For the purpose of the glazing requirements, the building's street wall surface at the ground floor level shall be measured from the floor to the height of the ceiling or 14 feet above grade, whichever is less.
(b) Banners or pennants
The display of banners or pennants from the exterior of any building in an underlying C5 District is prohibited.