The owner, lessee or person in possession of any real estate within the city upon which are located or situated any clay holes or other similar excavations is hereby required to cause such clay holes or other excavations to be enclosed with wooden or wire fences, of not less than six feet in height. When such fences are of wire only smooth or nonbarbed wire shall be used below a height of six feet above the established grade or above the ground where no grade has been established, and such fence or fences shall consist of not less than eight rows of wire, and such rows of wire shall not be more than nine inches apart.
(Prior code § 193-15)