No person having the care, either as owner or occupant, of any house, building or lot, shall permit any snow, ice, dirt or rubbish, including broken bottles and glass, or filth, obstructions, other articles or nuisances to remain upon the sidewalk in front of such house, building or lot for longer than twenty-four hours. When ice is formed on any sidewalk, the owner or occupant of the abutting premises shall, within twelve hours after the same has formed, cause the same to be removed or cause salt, sawdust, sand or other abrasive substance to be strewn thereon.
(1979 Code Sec. 13.04.040)