12.04.130 Openings or stairways-Permit required-Maintenance.  
   It is unlawful to construct or maintain any opening or stairway in any public street or alley or sidewalk or other public place without a permit from the mayor or city council.
   All such lawfully maintained openings shall be guarded by a suitable strong cover or railing to the approval of the street and alley commissioner.
(Prior code § 18.116).