§24-53

R6 R7 R8 R9 R10 R11 R12 In the districts indicated without a letter suffix, if an open area is provided along the full length of the front lot line with the minimum depth set forth in the following table, the provisions of Section 24- 52 (Maximum Height of Walls and Required Setbacks) shall not apply. The minimum depth of such an open area shall be measured perpendicular to the front lot line. However, in such instances, except as otherwise provided in Sections 24-51 (Permitted Obstructions) or 24-54 (Tower Regulations), no building or other structure shall penetrate the alternate sky exposure plane set forth in the table, and the sky exposure plane shall be measured from a point above the street line. If the open area provided under the terms of this Section is a public plaza, such open area may be counted for the bonus provided for a public plaza in the districts indicated in Section 24-14 (Floor Area Bonus for a Public Plaza). In R9 , R10, R11 or R12 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 Depth of Optional Front Alternate Sky Exposure Plane Open Area (in feet) Height Slope over Zoning Lot (expressed as a ratio of vertical above distance to horizontal distance) #Street Line# On Narrow Street On Wide Street (in feet) On On #Wide Vertical Horizontal Vertical Horizontal Narrow Street Distance Distance Distance Distance Street# Within R6 or R7 Districts 15 10 60 3.7 to 1 7.6 to 1 Within R8 R9, R10, R11 or R12 Districts 15 10 85 3.7 to 1 7.6 to 1 ALTERNATE SKY EXPOSURE PLANE R6 R7 R8 R9 R10 R11 R12 Districts