(A) The Building Inspector or his or her representative shall periodically inspect each sign or display for which a permit has been issued. If the installation is found to be unsatisfactory or unsafe, the permit shall be revoked until such time as the installation is made satisfactory and safe.
(B) The Building Inspector, upon finding the installation of an overhanging sign or other advertising display to be in an unsafe condition, shall declare the same to be a nuisance and give notice for the abatement of the same. Notice shall be given in writing to the owner of the sign that the same is found to be in an unsafe condition, thereby endangering the safety of the public, which condition constitutes a nuisance and the same must be abated within five days from the receipt of notice.
(`77 Code, § 23.13)