When the construction of a bulkhead is planned, plain and accurate plans of the work proposed to be done shall be filed with the City Clerk. Such plans shall be approved, in writing, by the Commissioner of Public Works before the work is commenced.
It shall be unlawful to maintain any bulkhead on the waterfront of the City not built according to this article.
All bulkheads on the waterfront of the City shall be substantial enough to resist the pressure of the filling behind them and shall be tight for a distance of at least 12 feet below mean low-water mark.
It shall be unlawful to dump or place or cause to be placed or dumped any material for filling upon the waterfront of the City unless such filling is behind a bulkhead constructed according to the provisions of this article.