Prior to the installation of any security grille in the interior of a commercial structure, where such security grille is visible from a public street or alley, such security grille shall require approval by the architectural commission, pursuant to article 30 of this chapter, and a permit issued by the building and safety division. (1962 Code § 10-719; amd. Ord. 1258, eff. 1-5-1967; Ord. 86-O-1983, eff. 12-4-1986)