It shall be unlawful for any person, firm, or corporation to create or maintain any open excavation, well, pit, hole, or shaft in the earth with sides having a gradient ratio of steeper than one to one without providing an effective barricade at least 3-1/2 feet in height so as to prevent the accidental falling into such opening by persons on foot, unless the premises on which the opening exists are otherwise securely fenced, where the premises are in or adjacent to a residential zone.
(Ord. 56-1987, passed 10-21-87)