When wrecking buildings adjacent to public sidewalks or alleys within the fire limits, as described in Chapter 1321, a fence at least eight feet high must be erected around the site to protect the public from falling materials, cave ins and other hazards, and adequate precautions shall be taken to protect buildings, public walks and streets adjacent thereto from damage. When wrecking buildings outside the fire limits, an open fence or barricade clearly defining the site shall be erected and maintained, and adequate precaution shall be taken to protect the public from falling materials, excavations and other hazards and to protect buildings, public walks and streets adjacent thereto from damage. At night the fences and barricades so erected shall be marked with flares or windproof lights. (Ord. 1999-96. Passed 8-11-99.)