Every projecting sign shall be placed at least twelve feet above the public sidewalk over which it is erected, and a distance not greater than two feet from the face of the wall to which it is attached, measuring from the point of the sign nearest thereto, nor shall any sign or point thereof extend nearer the curb line than three feet. No permit shall be issued for a projecting sign over public right-of-way unless an encroachment permit is first obtained from the City. The total projection from any wall surface shall not exceed four (4) feet, including bracket.