In ordering street improvements without a petition and assessing the costs thereof under authority of this Article, the Council shall comply with the procedures provided by G.S. §§ 160A-216 through 160A-239, except those provisions relating to petitions of property owners and the sufficiency thereof. The effect of the act of levying assessments under authority of this Article shall be the same as if the assessments were levied under authority of G.S. §§ 160A-216 through 160A-239.