§ 13-402 SAME; EXCEPTION; ALTERNATE REMEDY.
   Where there shall be ice or compacted snow on any such sidewalk of such a character as to make it practically impossible to remove the same, the sprinkling of ashes, sand or other noncorrosive chemicals on the accumulation of ice or snow in such a manner as to make such sidewalk reasonably safe for pedestrian travel shall be deemed a sufficient compliance with the provisions of this article until the ice or snow can be removed.