(a) Front yard. A front yard of 50 feet shall be required for uses permitted in the "I-P" District, except that unsupported roofs or sun screens may project six feet into the front yard area.
(b) Side yard setback. A side yard of 40 feet shall be required for uses permitted in this district, except that if a single building is constructed on two or more lots, or if a site on which a single building was originally constructed is further subdivided into two or more lots in accordance with the provisions of § 17-2104, no side yard setback is required from interior lot lines; provided further, that, in any event, there shall be at least 20 feet of open space between all buildings on the property which area shall be a side yard setback area. In the case of a corner lot, the street side setback shall be 50 feet, except that unsupported roofs and sunscreen may project six feet into the setback area. Interior lot lines for corner lots shall be considered side lot lines.
(c) Rear yard setback. Rear yard setback shall be 20 feet.