33-455 - Alternate regulations for towers on lots bounded by two or more streets LAST AMENDED 12/5/2024 C5-3 C5-5 C6-6 C6-7 C6-9 C6-11 C6-12 In the districts indicated, if a #zoning lot# is bounded by at least two #street lines#, a tower may occupy the percent of the #lot area# of a #zoning lot# set forth in this Section, provided that, except as otherwise set forth in Section 33-457 (Tower setbacks on narrow blocks), all portions of any #building# or #buildings# on such #zoning lot#, including such tower, are set back from #street lines# as required in this Section. (a) The maximum percent of #lot area# that may be occupied by such tower, shall be the sum of 40 percent plus one-half of one percent for every .10 by which the #floor area ratio# of such #zoning lot# is less than the #floor area ratio# permitted under the provisions of Sections 33-12 (Maximum Floor Area Ratio), 33-13 (Floor Area Bonus for a Public Plaza) or 33- 14 (Floor Area Bonus for Arcades). The maximum #lot coverage# for any tower built under the provisions of this Section or for any #building# or #buildings# on any #zoning lot# occupied by such tower shall be 55 percent of the #lot area# of such #zoning lot#. (b) At all levels, including ground level, such #building# shall be set back from the #street line# as follows: (1) On #narrow streets#, by a distance equal to at least the fraction of the #aggregate width of street walls# of the tower, the numerator of which fraction is one and the denominator of which fraction is the sum of 3.0 plus .0667 for every .10 by which the #floor area ratio# of such #building# is less than the #floor area ratio# permitted under the provisions of Sections 33-12, 33-13 or 33-14, provided that such fraction shall be no less than one-fifth, and provided further that such setback need not exceed 45 feet. (2) On #wide streets#, by a distance equal to at least the fraction of the #aggregate width of street walls# of the tower, the numerator of which fraction is one and the denominator of which fraction is the sum of 4.0 plus .10 for every .10 by which the #floor area ratio# of such #building# is less than the #floor area ratio# permitted under the provisions of Sections 33-12, 33-13 or 33-14, provided that such fraction shall be no less than one- seventh, and provided further that such setback need not exceed 35 feet. (c) If a #zoning lot# occupies an entire #block#, the maximum setback, set forth in paragraph (b) of this Section, of 45 feet on each #narrow street# bounding the #zoning lot# may be reduced by one foot for every six feet of setback provided on a #wide street# bounding the #zoning lot# in addition to the setbacks otherwise required for #wide streets# as set forth in such paragraph, provided that no setback on a #narrow street# resulting from such reduction shall be less than 35 feet or one-tenth the #aggregate width of street walls# of the tower, whichever shall require the greater setback. (d) The additional setbacks on #wide streets# set forth in paragraph (c) of this Section may be provided entirely on one #wide street# or divided in any proportion among any two #wide streets# bounding the #zoning lot#. (e) Notwithstanding any other provision set forth in this Section, no #building# or portion of a #building# built under the provisions of this Section shall be set back less than 25 feet from the #street line# on #narrow streets# or less than 15 feet from the #street line# on #wide streets#.