4.04.310 GLASS USED IN SIGNS OR STRUCTURES.
   Any glass forming a part of any advertising structure or sign device shall be Flexlume or similar glass, or be plate glass at least one-quarter of an inch in thickness; and in case any single piece or pane of glass has an area of more than three square feet it shall be wire glass. All glass shall be securely held in place. (Ord. 508 § 23 (part); June 9, 1927.)