Where all the frontage on one side of a street between two intersecting streets is located in the "D" industrial district, no front yard shall be required. Where the frontage on one side of the street between two intersecting streets is located partly in the "D" industrial district and partly in a dwelling district, the front yard requirements of the dwelling district shall apply to the "D" industrial district. (Prior code § 11-3-4 (d) (1))