The regulations of this Section shall apply to all buildings within Site 3.

All stories of a building located wholly or partially above the highest level of the adjoining public sidewalk or finished grade on Site 3 shall be considered a tower and shall comply with the provisions of this Section. Not more than one tower shall be permitted on Site 3.

(a)        Ground floor

A maximum of 6,000 square feet of the ground floor shall be permitted to provide residential uses. The remaining portion of the ground floor shall provide an area that is accessible to the surrounding publicly accessible open spaces listed in Section 93-75 (Publicly Accessible Open Spaces in Subdistrict F). Such space may provide ground floor uses pursuant to paragraph (a) of Section 37-76 (Mandatory Allocation of Frontages for Permitted Uses), or may be considered part of the Central Open Space and comply with the regulations set forth in Section 93-75.

If such remaining ground floor level space provides ground floor uses, such uses shall adjoin a minimum of 70 percent of the perimeter of the outermost walls of the ground floor of the building to a minimum depth of 30 feet. In addition, such outermost wall shall be at least 70 percent glazed with transparent material to a height of 40 feet.

If such remaining ground floor level space is considered part of the Central Open Space, such space may be open or enclosed. An open space provided pursuant to this paragraph (a) shall have a clear height of at least 40 feet measured from the level of an adjoining finished grade or sidewalk. An enclosed publicly accessible space provided pursuant to this paragraph (a) shall adjoin a minimum of 70 percent of the perimeter of the outermost walls of the ground floor of the building to a minimum depth of 30 feet. In addition, such outermost wall shall be at least 70 percent glazed with transparent material to a height of 40 feet.

(b)        Maximum floor plate

The gross area of any story of a tower on Site 3 shall not exceed 12,000 square feet.

(c)        Maximum length and height

The maximum horizontal dimension of a tower, measured in any direction, shall not exceed 145 feet. However, if the angle of the tower’s maximum horizontal dimension is aligned within 15 degrees of a 45 degree line constructed from either the southwest or northeast corner of the Site 3 rectangle in plan, as shown on Map 2 (Subdistrict F: Site Plan) in Appendix B, then such maximum horizontal dimension measured in this direction may be increased to 160 feet, provided that the maximum dimension measured perpendicular to such increased dimension does not exceed a length of 120 feet.

The maximum height of a tower within Site 3 shall be a minimum of 100 feet taller than the tower height of Site 5.

All towers that exceed a height of 350 feet shall provide articulation in accordance with Section 93-569 (Tower top articulation).