No person owning, building or repairing any house or other building shall permit any lumber, brick, plaster, mortar, earth, clay, sand, stone or other material to remain on the sidewalk after sunset of the day upon which it was placed there, without permission, in writing, from the Chief of Police, subject to any safeguards he or she may prescribe.
(Prior Code, § 7-2) Penalty, see § 170.999