(3/22/16)
C1 C2 C4 C5 C6
In the districts indicated without a letter suffix, when a #mixed building# is subject to tower regulations, the #residential# tower regulations of paragraphs (a) and (b) or the #commercial# tower regulations of paragraph (c) of this Section shall apply to the entire #building#.
- In C1 or C2 Districts mapped within R9 or R10 Districts, or
in C1-8, C1-9, C2-7 or C2-8 Districts, a #mixed building#
that meets the location and #floor area# criteria of
paragraph (a) of Section 23-65 (Tower Regulations) shall be
governed by the provisions of Section 23-651 (Tower-on-abase),
except that the #building# base regulations of
paragraph (b) of Section 23-651 shall be modified, as
follows:
- On a #wide street#, and on a #narrow street# within 30
feet of its intersection with a #wide street#, the
entire width of the #street wall# of a base shall be
located on the #street line#.
However, to allow for articulation of corners at the intersection of two #street lines#, the #street wall# may be located anywhere within an area bounded by the two #street lines# and a line connecting such #street lines# at points 15 feet from their intersection. Recesses, not to exceed three feet in depth from the #street line#, shall be permitted on the ground floor where required to provide access to the #building#. - On a #narrow street# beyond 30 feet of its intersection with a #wide street#, the #street wall# of a base shall be located within eight feet of a #street line#.
- On a #wide street#, recesses above the ground floor are
permitted at any level in the #street wall# of a base
for #outer courts# or balconies. The aggregate width of
such recesses shall not exceed 50 percent of the width
of the entire #street wall# at any level.
However, not more than 30 percent of the aggregate width of such recesses shall exceed a depth of eight feet. Furthermore, no recesses shall be permitted below a height of 12 feet, within 20 feet of an adjacent #building#, or within 30 feet of the intersection of two #street lines#, except for corner articulation as provided for in paragraph (a)(1) of this Section. - On a #narrow street#, recesses are permitted at any
level in the #street wall# of a base for #outer courts#
or balconies. The aggregate width of such recesses
shall not exceed 50 percent of the width of the entire
#street wall# at any level.
However, not more than 30 percent of the aggregate width of such recesses shall exceed a depth of eight feet. Furthermore, no recesses shall be permitted below a height of 12 feet within 20 feet of an adjacent #building#, or within 30 feet of the intersection of two #street lines#, except for corner articulation as provided for in paragraph (a)(1) of this Section.
- On a #wide street#, and on a #narrow street# within 30
feet of its intersection with a #wide street#, the
entire width of the #street wall# of a base shall be
located on the #street line#.
- In C4-6, C5-1 or C6-3 Districts, the #residential# portion
of a #mixed building# that in the aggregate occupies not
more than 40 percent of the #lot area# of a #zoning lot# or,
for #zoning lots# of less than 20,000 square feet, the
percent set forth in Section 23-65 (Tower Regulations), may
be constructed in conformance with the provisions of Section
23-652 (Standard tower regulations), provided the following
conditions are met:
- at least 65 percent of the total allowable #floor area# on a #zoning lot# under the applicable district regulations is occupied by #residential uses#;
- all #uses# within such #mixed building# comply with the provisions of Section 32-42 (Location within Buildings); and
- only the #residential# portion of such #mixed building# penetrates the #sky exposure plane# as set forth in Sections 33-432 or 33-442 (In other Commercial Districts).
- In C4-7, C5-2, C5-3, C5-4, C5-5, C6-4, C6-5, C6-6, C6-7, C6-
8 or C6-9 Districts, the tower regulations applicable to any
#mixed building# shall be the regulations set forth in
Section 33-45.
However, in C4-7, C5-2, C5-4, C6-4, C6-5 or C6-8 Districts, when no more than two #stories# of a #mixed building# are occupied by non-#residential uses#, the tower regulations applicable to the #residential# portion of such #mixed building# may be governed by Section 23-652 (Standard tower regulations) or, for towers on small lots, the percentages set forth in Section 23-65 (Tower Regulations).
All #uses# within such #mixed building# shall comply with the provisions of Section 32-42.