Amending Title 14 of The Philadelphia Code relating to "Zoning and Planning" by amending Chapter 14-200 entitled "Residential Districts" by repealing Section 14-202 entitled "R-1 Residential District" through Section 14-223 entitled "RC-3 Residential District", and by replacing said provisions of "R-1 Residential" through "RC-3 Residential" in the form of charts and supplementary material, by amending Section 14-224 entitled "RC-4 Residential District", by amending Section 14-226 entitled "RC-6 Residential District", by making certain technical amendments to provisions of Chapter 14-200 entitl — Open Common Ground