All work done under permits granted by authority of this Article shall be completed within the time set by the Planning and Development Director and shall be done in accordance with the official grades and standard details and specifications of the City. All sidewalks shall be constructed under standard specifications of the City. (Code 1962, § 35-60; Ord. No. G-3313, § 1; Ord. No. G-5590, § 1, 2011)