No sidewalks shall be constructed or repaired along the streets or alleys of the city until lines and grades therefor shall have been furnished by the city engineer or the city building inspector and all sidewalks shall be so constructed as to conform to the lines and grades so furnished and established, and it shall be the duty of the city engineer or city building inspector to supply to any person holding a permit for the construction or repair of sidewalk the grades and lines therefor upon request by such person. The construction or repair of sidewalks shall likewise conform to the standards and specifications of the city as herein adopted, or as may be otherwise provided by the city engineer through the city building inspector. (1974 Code § 6-102; amd. 2010 Code)