It shall be unlawful for any person, firm, or corporation to do or perform any of the foundation, construction, or reconstruction work mentioned in §§ <cite data-path="|26|§26-1">26-1</cite> and <cite data-path="|26|§26-2">26-2</cite> of <cite data-path="|26">this article</cite> unless the said work shall be in conformity with the lines and grades ascertained, fixed, marked, and established as provided in said §§ 26-1 and 26-2. City Code, 1950, art. 35, §66 1966, art. 26, §89 1976/83, art. 26, §96 Ord. 48-504