When the grade of any street within the city shall be duly and legally established by the Common Council of the city, the grade thereof shall be marked as follows. Wherever the street intersects with any other street in the city, two lines shall be drawn, one line being drawn parallel with the eight feet south from the north line of the intersection, and one line being drawn parallel with and eight feet east of the west line of the intersection, and at the point of the intersection of the two lines, a concrete, stone or iron monument shall be placed and the top of the monument shall be set at the true grade of the street at the intersection of the centerlines of the intersecting streets.
(Prior Code, § 23-75)