The underlying height and setback regulations shall be modified by the provisions of this Section.

No portion of a building or other structure shall penetrate a plane drawn parallel to the base plane at a height that is shown in Table III of this Section. For buildings with pitched roofs, height shall be measured to the midpoint of such pitched roof. For the purposes of this Section, the base plane, which is a plane from which the height of a building or other structure is measured in R2X, R3, R4 and R5 Districts, shall also be established in accordance with the provisions of Section 12-10 (DEFINITIONS) for buildings or other structures in R1, R2 and R6 Districts.

TABLE III
MAXIMUM HEIGHT OF A BUILDING OR OTHER STRUCTURE

^*        or Residence District equivalent when the zoning lot is located within a Commercial District