Every required loading space shall be not less than ten feet in width and sixty (60) feet in length, and shall be clear to a height of not less than fourteen (14) feet. Every required loading space shall be on the same lot as the structure it serves or on an abutting lot and shall be continuously accessible from the street. No loading space shall occupy any part of a required parking space, or any required street side yard of a corner lot. (Prior gen. code § 8-63.8)