In addition to all other provisions of Section 127-23 (Special Height and Setback Regulations), inclusive, for street wall widths exceeding 150 feet, as measured parallel to the street line, articulation shall be provided in accordance with the provisions of this Section.

The depth of required recesses or projections of a building shall be measured from the street wall. For the purpose of applying the provisions of this Section, the base height of such building shall be either the maximum base height or the height of such building where a required setback pursuant to the provisions of Section 127-233 (Base heights and setback regulations) is provided, whichever is lower. However, if such building provides multiple setbacks, the highest of such multiple setbacks shall be considered the base height of such building.

The portion of a tower street wall subject to the tower top regulations of paragraph (b) of Section 127-234 (Tower regulations) shall not be included for the purposes of determining or satisfying the articulation requirements of this Section. In addition, setbacks provided in accordance with the provisions of Section 127-233 shall not constitute recesses.

(a)        Along all streets other than shore public walkways

For street walls fronting streets other than the shore public walkway, a minimum of 15 percent of the entire surface area of each street wall shall either recess or project a minimum of two feet from the street wall with no individual recess or projection exceeding 50 percent of such surface area of the street wall.

Along each street wall frontage, at least one-third of such overall 15 percent requirement shall be provided in the form of articulation below the base height of such building, and at least one-third shall be provided above the base height, respectively. The remaining one-third of such 15 percent requirement may be located anywhere on the street wall. Where a street wall frontage does not exceed the maximum base height, the overall 15 percent requirement shall be provided in the building base.

Within the articulation provided in the building base, the aggregate width of articulation at each level where provided shall achieve a street wall width that is equivalent to at least 10 percent of the aggregate width of street wall at that level, and no individual recess or projection shall have a street wall width of less than 10 feet.

In no event shall the total amount of projections above the base height exceed the thresholds permitted pursuant paragraph (c)(1) of Section 127-233.

(b)        Along the shore public walkway

For street walls fronting the shore public walkway, at least five percent of the entire surface area of the street wall below the base height shall either recess or project a minimum of two feet from the street wall with no individual recess or projection exceeding 50 percent of such surface area of the street wall.

Within the articulation provided in the building base, the aggregate width of articulation at each level where provided shall achieve a street wall width that is equivalent to at least 10 percent of the aggregate width of street wall at that level, and no individual recess or projection shall have a street wall width of less than 10 feet.