Along street frontages where a sidewalk widening is required pursuant to Map 3 in the Appendix to this Chapter, the street wall location requirements of this Section shall apply from the interior boundary of such sidewalk widening.

1. Along primary street frontages
   
   The street wall location provisions of paragraph (b) of Section 35-631 shall apply along primary street frontages, as shown on Map 3, except that the street wall shall rise to at least the minimum base height as specified in Section 127-233 (Base heights and setback regulations), or the height of the building, whichever is lower. The requirements of this paragraph shall not apply to the portion of a building adjacent to the major portion of a publicly accessible area, as specified in Section 127-43 (Publicly Accessible Area).
2. Along secondary street frontages
   
   Along street frontages that are not designated as primary street frontages, street walls may be located at any distance from the street line.