It is unlawful for a person to:
1. Stairs and Railings. Construct or build a stairway or passageway to any cellar or basement by occupying any part of the sidewalk, or to enclose any portion of a sidewalk with a railing without permission by resolution of the Council.
2. Openings. Keep open any cellar door, grating, or cover to any vault on any sidewalk except while in actual use with adequate guards to protect the public.
3. Protect Openings. Neglect to properly protect or barricade all openings on or within six feet of any sidewalk.