142-14 Ground Floor Level Requirements
For the purposes of applying the special ground floor level streetscape provisions set forth in Section 37-30 to this Chapter, any portion of a ground floor level street frontage along streets designated on Map 2 (Ground Floor Use and Curb Cut Regulations) in the Appendix to this Chapter shall be considered primary street frontages, and shall consist of Type 1, Type 2 and Type 3 primary street frontages. A ground floor level street frontage along any other street shall be considered a secondary street frontage except for frontages located within Subdistrict F. For the purposes of this Section, defined terms shall include those in Sections 12-10 and 37-311.
The provisions of this Section shall apply to developments or ground floor level enlargements.
(a) Along primary street frontages
(1) Type 1 primary street frontages
For buildings, or portions thereof, with Type 1 primary street frontage, uses on the ground floor level, to the minimum depth set forth in Section 37-32 (Ground Floor Depth Requirements for Certain Uses), shall be limited to non-residential uses, except for Type 1 lobbies and entrances and exits to accessory parking spaces provided in accordance with the applicable provisions of Section 37-33 (Maximum Width of Certain Uses). Group parking facilities located on the ground floor level shall be wrapped by floor area in accordance with the provisions of paragraph (a) of Section 37-35 (Parking Wrap and Screening Requirements). Ground floor level street walls shall be glazed in accordance with the provisions set forth in Section 37-34 (Minimum Transparency Requirements).
(2) Type 2 primary street frontages
For buildings, or portions thereof, with Type 2 primary street frontage, all uses permitted by the underlying district shall be permitted on the ground floor level, provided that group parking facilities located on the ground floor level shall be wrapped by floor area in accordance with the provisions of paragraph (a) of Section 37-35.
(3) Type 3 primary street frontages
For buildings, or portions thereof, with Type 3 primary street frontage, the following regulations shall apply to the ground floor level to a depth of 30 feet from the street line:
(i) the maximum street wall width of a bank or loan office, as listed in Use Group 6C, shall not exceed 25 feet.
However, in Subarea A1 or B1, as shown on Map 1, for buildings containing predominantly commercial or public utility vehicle storage, including accessory fuel pumps, as listed in Use Group 16C, the screening provisions of paragraph (b) of Section 37-35 may be utilized as an alternative to such wrapping requirement and any transparency requirements need not apply.
(b) Along secondary street frontages
For buildings, or portions thereof, with secondary street frontage, all uses permitted by the underlying district shall be permitted on the ground floor level, provided that any off-street parking spaces on the ground floor level shall be wrapped or screened in accordance with Section 37-35. Entrances and exits to accessory parking facilities shall be subject to the provisions of paragraph (b) of Section 37-33.
(c) For blank walls
In Commercial Districts or Manufacturing Districts, except for portions of zoning lots located within Subdistrict F, any street wall width exceeding 50 feet with no transparent elements on the ground floor level shall provide planting or wall treatment in accordance with the provisions of Section 142-141 (Special Streetscape Provisions for Blank Walls).
The level of the finished floor of such ground floor shall be located not higher than five feet above nor lower than five feet below the as-built level of the adjoining street.
In C4-5D Districts, and in C2 Districts mapped within R7D Districts, the provisions of Section 32-434 (Ground floor use in C4-5D and C6-3D Districts and in certain C2 Districts) shall not apply. In lieu thereof, the provisions of this Section shall apply.
Where visual mitigation elements are required on a blank wall along the ground floor level street wall pursuant to the provisions of Section 142-14 (Ground Floor Level Requirements), at least 75 percent of the linear footage of any such blank wall shall be treated by any of the following visual mitigation elements, or both.
When planting is provided as a visual mitigation element, any combination of perennials, annuals, decorative grasses or shrubs shall be provided in planting beds, raised planting beds or planter boxes in front of the street wall. Each foot in width of a planting bed, raised planting bed or planter box, as measured parallel to the street wall, shall satisfy one linear foot of frontage mitigation requirement. Such planting bed shall extend to a depth of at least three feet, inclusive of any structure containing the planted material. Any individual planted area shall have a width of at least five feet, and the height of such planting, inclusive of any structure containing the planted materials, shall be at least three feet.
At least 25 percent of such street wall width shall be planted in accordance with the provisions of this paragraph.
(b) Wall treatment
When a wall treatment is provided as a visual mitigation element, permitted signs, graphic or sculptural art, rustication, decorative screening or latticework, or living plant material, shall be provided along the street wall. Each linear foot of wall treatment shall constitute one linear foot of frontage mitigation requirement. Such wall treatment shall extend to a height of at least 10 feet, as measured from the level of the adjoining sidewalk or grade, and have a minimum width of 10 feet, as measured parallel to the street wall.