No lot, yard, court, parking area, or other space shall be reduced in area or dimension, thereby making the area or dimension less than the minimum required by this Zoning Code, and, if already less than the minimum required by this Zoning Code, the area or dimension shall not be further reduced. No part of a yard, court, parking area, or other space provided about or for any building or structure for the purpose of complying with the provisions of this Zoning Code shall be included as part of a yard, court, parking area or other space required under this Zoning Code for another building or structure.