23-64 Basic Height and Setback Requirements

R6 R7 R8 R9 R10

In the districts indicated without a letter suffix, for #buildings# other than #Quality Housing buildings#, the height and setback of a #building or other structure# shall be as set forth in Section 23- 641 (Front setbacks), or 23-642 (Alternate front setbacks). In R9 and R10 Districts, towers are permitted in accordance with the provisions of Section 23-65.

R6 R7 R8 R9 R10

In the districts indicated without a letter suffix, if the front wall or other portion of a #building or other structure# is located at the #street line# or within the #initial setback distance# set forth in the following table, the height of such front wall or other portion of a #building or other structure# shall not exceed the maximum height above the #street line# set forth in the table. Above such specified maximum height and beyond the #initial setback distance#, the #building or other structure# shall not penetrate the #sky exposure plane# set forth in the table, except as otherwise provided in Sections 23-62 (Permitted Obstructions) or 23-65 (Tower Regulations).

MAXIMUM HEIGHT OF FRONT WALL AND REQUIRED FRONT SETBACKS
#Sky Exposure Plane#
#Initial Setback Distance# (in feet)		Maximum Height of a Front Wall or other portion of a #Building or Other Structure# within the #Initial Setback Distance#	Slope over #Zoning Lot# (expressed as a ratio of vertical distance to horizontal distance)
			Height above #Street Line# (in feet)	On #Narrow Street#		On #Wide Street#
On #Narrow Street#	On #Wide Street#			Vertical Distance	Horizontal Distance	Vertical Distance	Horizontal Distance
R6 or R7 Districts
20	15	60 feet or six #stories#, whichever is less	60	2.7 to 1		5.6 to 1
R8 R9 or R10 Districts
20	15	85 feet or nine #stories#, whichever is less	85	2.7 to 1		5.6 to 1

                  SKY EXPOSURE PLANE
                  R6 R7 R8 R9 R10 Districts
              (23-641, 24-522, 33-432, 43-43)

R6 R7 R8 R9 R10

In the districts indicated without a letter suffix, if an open area is provided along the entire length of the #front lot line# with the minimum depth set forth in the Table in this Section, the provisions of this Section may apply in lieu of the provisions of Section 23- 641 (Front setbacks). The #building or other structure# shall not penetrate the #sky exposure plane# set forth in the table, except as otherwise provided in Section 23-62 (Permitted Obstructions) or 23- 65 (Tower Regulations).

In R9 or R10 Districts, the provisions of this Section shall be inapplicable to any #development# or #enlargement# with more than 25 percent of the total #floor area# of the #building# in #residential use#.

ALTERNATE REQUIRED FRONT SETBACKS
Alternate #Sky Exposure Plane#
Slope over #Zoning Lot# (expressed as a ratio of vertical distance to horizontal distance)
Depth of Optional Front Open Area (in feet, measured perpendicular to #street line#)		Height above #Street Line# (in feet)	On #Narrow Street#		On #Wide Street#
On #Narrow Street#	On #Wide Street#		Vertical Distance	Hori- zontal Distance	Vertical Distance	Hori- zontal Distance
R6 or R7 Districts
15	10	60	3.7 to 1		7.6 to 1
R8 R9 or R10 Districts
15	10	85	3.7 to 1		7.6 to 1

      ALTERNATE SKY EXPOSURE PLANE
                 R6 R7 R8 R9 R10 Districts
              (23-642, 24-53, 33-442, 43-44)