The maximum floor area ratio permitted on each portion of such zoning lot for the applicable type of building or buildings on such zoning lot shall be determined under the applicable regulations of Articles II, III and IV.

Each such floor area ratio shall be multiplied by the percentage of the zoning lot to which such floor area ratio applies. The sum of the products thus obtained shall be the adjusted maximum floor area ratio applicable to such zoning lot.

In applying this provision, the floor area bonus permitted for publicly accessible open areas or arcades, under the applicable regulations of this Resolution, shall apply only to such publicly accessible open areas, arcades or portions thereof, as are located in a district in which such bonus is granted.

When a zoning lot (with a height factor greater than 21) does not have a specified maximum floor area ratio, for the purpose of computing the adjusted maximum floor area ratio, the floor area ratio of such zoning lot shall be deemed to be that which can be achieved at the minimum required open space ratio for such zoning lot.

The floor area resulting from application of the adjusted maximum floor area ratio may be located anywhere on the zoning lot, subject to all other regulations of this Resolution, and provided that the floor area ratio for any portion of the zoning lot within one district shall not exceed the maximum floor area ratio, by height factor, if applicable, specified for that district, or the adjusted maximum floor area ratio for the zoning lot, whichever is greater, except as follows:

(a)        In R3-2 Districts, R4 Districts, except R4A, R4-1 and R4B Districts, R5 Districts, and equivalent Commercial Districts, and for Quality Housing buildings in R6, R7 and R8 Districts and equivalent Commercial Districts outside the Manhattan Core, the residential floor area ratio of that portion of the zoning lot fronting on and within 100 feet of a wide street and permitting the greater maximum permitted residential floor area ratio may exceed the maximum permitted residential floor area ratio for the portion of the zoning lot by up to 20 percent, provided that the maximum residential floor area ratio for the zoning lot does not exceed the adjusted maximum residential floor area ratio applicable to such zoning lot.

(b)        For portions of zoning lots within an R2X, R3-1, R3A, R3X, R4-1, R4A or R4B District not subject to the provisions of Section 77-11 (Conditions for Application of Use Regulations to Entire Zoning Lot), the floor area ratio for such portion of the zoning lot shall not exceed the maximum floor area ratio specified for that district.