(A) Openings through the sidewalk for the delivery of fuel, when lawfully in existence, shall not be greater than 30 inches in diameter, shall be circular in form and shall be effectually closed when not in actual use by an iron cover set flush within the surface of the sidewalk, level with the sidewalk and securely locked in place.
(B) All openings in the sidewalk for the admission of light and air shall be closed and protected either by substantial iron gratings or illuminating pavement of a design and so placed as to be satisfactory to the Engineer.
(1991 Code, § 4.7)