The grade of all streets, alleys and sidewalks shall be established
by the City Council and shall be recorded in the office of the City
Clerk. No street, alley or sidewalk shall be worked until the grade
thereof is established. The grades of all streets having curb and
gutter on the effective date hereof are established at the levels
then existing.
No person shall alter the grade of any street, alley, sidewalk
or public ground or any part thereof unless authorized and instructed
to do so by the City Council.
The width of the traveled roadway curblines on all streets shall
be as indicated upon profiles for the respective streets.