Except as provided in division (E) of this section, no storage bins, cabinets, closets or other storage enclosures shall be constructed within the confines of a carport or attached to any carport unless they are constructed as follows:
(A) They shall be composed of at least one-half inch plywood or a material having the strength of one-half inch plywood;
(B) Hinges on any doors to such storage enclosures shall have nonremovable hinge pins and hidden or nonremovable screws;
(C) If the storage enclosures are secured with lock hasps and padlocks, the lock hasps shall be hardened and attached with hidden or nonremovable screws. The padlocks shall have a hardened shackle and five-pin tumbler operation with a nonremovable key when in the unlocked position;
(D) The storage enclosures shall be constructed so as to have all their exposed sides, top and bottom, securely attached to other surfaces forming the enclosures;
(E) The requirements in divisions (A) through (D) of this section shall not apply to any storage enclosure on which there is continually attached a sign clearly and conspicuously stating "NOT FOR THE STORAGE OF VALUABLES." The signing shall be with letters three inches high and with a one inch paint stroke.
(`78 Code, § 15.52.120.)