(1) A single special ordinance authorizing streets to be placed upon or stricken from the City Plan, or the revision of lines and grades, or any combination thereof, may be enacted, and shall be in a form similar to that prescribed in § 11-402. Except as otherwise specifically provided, and in addition to any specific requirements therein, each such ordinance shall be conditional upon compliance with the applicable provisions of this Chapter. Each such combined ordinance shall be as effective as if separate ordinances were passed.