It shall be the duty of every person, firm or corporation placing or causing to be placed any building, stand, counter, lunch wagon, wagon stand, bandstand, structure, building material, gravel, dirt, excavation or other obstruction on any street, alley or sidewalk to erect and maintain barriers, warning flags and signs at all times at each end and at intermediate points of such excavation or fill and at such places as may be necessary as adjudged by the Director of Public Works along the excavation or fill, walkways and vehicle or pedestrian ways to prevent accident, and also to place and maintain lights at each end of such excavation or fill and at distances of not more than 50 feet along the line thereof from sunset each day to sunrise of the next day, until such obstruction is removed. In case of neglect or refusal of such person to do so, the Director of Public Works shall have such necessary barriers and lights placed along the line of said obstruction. In such event, the expense of such precautionary action shall be charged to, and collected from, the permittee or contractor according to a fee schedule set by resolution of the City Council.
(1362-12/67, 2528-2/82)