(A) It shall be the duty of the owner, tenant, lessee or contractor during the construction of any building or improvement upon or near the line of any public street, highway, alley or sidewalk to have all excavations or exposures of any kind protected and guarded by suitable guards or barricades by day, and by warning lights at night.
(B) In case of the failure, neglect or refusal of such person to erect such guards and keep the street, highway or sidewalk well and securely guarded, the Municipal Services Director of the city may immediately stop all work upon such building or improvement until the guards are erected and kept in the manner required by this section.
(2005 Code, § 8-305)