(A) It shall be the duty of the City Engineer to have accurate standard elevations and city bench marks established from, and referring to the City Hall Bench, and after they have been ratified and confirmed by the City Council to make and keep a careful and complete record of such standard and elevation marks. He or she shall also make and keep a record of all the street grades heretofore and hereafter established by the City Council.
(B) From the elevations given in said records, all public and private improvements shall be contained in said records shall be the legal and only standard representing city datum.
(1960 Code, § 40-3-2)