§ 98.30  BARRICADES, LIGHTS.
   (A)   It shall be unlawful for the owner of any lot or part of a lot in the city, abutting on any sidewalk, street, or alley, to allow, suffer or permit on such lots, lot, or parts of lot, immediately adjoining such sidewalk, street, or alley, any excavation, depression, hole, cistern, well, or other dangerous condition, whereby the lives of persons who pass such lot or part of a lot, shall be endangered, or such persons exposed to injury, unless such excavation, hole, cistern, well or other dangerous condition, shall be safely guarded by a fence or balustrade, at least four feet high, and substantially boarded and firmly built, erected between such dangerous places and the sidewalk, street, or alley, along such lot or part of a lot.
('80 Code, § 22-7)
   (B)   Standard barricades must be used during the day and standard flares and barricades must be used at night, at the location of excavations and drillings covered by this subchapter.
('80 Code, § 22-24)  Penalty, see § 10.99