Trap doors in sidewalks for the moving of merchandise to and from the area spaces and cellars shall be substantially constructed of iron suitably roughened and when closed shall be firm and unyielding and in strength equal to that required in the sidewalk proper and shall in no case be allowed to project above or to be depressed below the surface of the surrounding sidewalk.
Coal holes or openings through sidewalks for the admission of coal, wood and light shall not exceed twenty four inches (24") in maximum dimensions and shall be provided with cast iron (or other metallic) rims and covers suitably roughened having top surface of same set into the surface of the sidewalk, flush with the top of the walk. Such cover may be cast solid or may have prismatic lights of glass set therein and in no case shall rings or ring bolts be allowed to project above the surface of such sidewalk.
Trap doors, coal holes and all like openings shall at all times be kept closed and securely fastened from the lower side, except when in use. During such time as they remain open, they shall be guarded by an attendant who shall remain continually thereby. Covers or rims that are not properly roughened or that may have become smooth by the wear of street traffic or other causes must be removed and replaced by others in accordance with the provisions of this chapter. (Ord. 97, 8-5-1910)