No single establishment shall have a wide street front lot line ground level frontage of less than 10 feet.

The following requirements apply to wide street front lot line ground level frontages and, for zoning lots between 43rd and 50th Streets with street frontage on Broadway and/or Seventh Avenue, narrow street front lot line ground level frontages within 100 feet of Broadway or Seventh Avenue:

(a)        Any length of front lot line ground level street frontage of a zoning lot devoted to banks and travel bureaus shall not constitute in total more than 15 percent of any such front lot line ground level street frontage.

(b)        Each establishment shall be located within 10 feet of the lot line on which it is required to front for the full length of the frontage of that establishment, except that, where a street wall recess at curb level permitted under Section 81-43 (Street Wall Continuity Along Designated Streets) extends a greater distance from the lot line, the length of frontage of any establishment adjoining that recess may be located at an equal, but not greater, distance from the lot line.

(c)        Lobby space shall not comprise more than 20 percent of any such front lot line ground level street frontage. In addition, a lobby frontage on any such front lot line ground level street frontage need not be less than 15 feet.

(d)        Uses with no street frontage and which are accessible only through a lobby shall not be restricted to Use Group T uses.