1140.37 TEMPORARY SIGNS.
   (a)   Temporary cloth signs, banners, streamers, etc, may be suspended over public property by special permission of the Building Commissioner. The purpose of such temporary signs shall be for civic or community affairs of a public or semi-public nature.
   (b)   Temporary signs shall be set back at least five (5) feet from every right-of-way line, and at least twenty (20) feet from any side or rear lot line; shall not extend more than six (6) inches from any wall or structure upon which they are erected; and shall not obscure any light or ventilation openings.
   (c)   No temporary sign shall be mounted, attached, affixed, installed or otherwise secured by any permanent means to any building, permanent sign, other structure or improvement, or to the ground upon which it is erected.
   (d)   No temporary sign shall be mounted, attached, affixed, installed or otherwise secured so as to protrude above the roof of a structure.
   (e)   No temporary sign shall exceed thirty-two (32) square feet in sign face area, nor six (6) feet in height. The total sign face area of all temporary signs on a lot shall not exceed fifty percent (50%) of the total permitted permanent sign face area for said lot.
   (f)   No temporary sign shall be nearer than two (2) feet to any other permanent sign, building or structure, nor nearer than ten (10) feet to any other temporary sign.
   (g)   No temporary sign shall be illuminated by anything other than non-reflected daylight, except by variance issued by the Board of Zoning Appeals.
   (h)   Permits for temporary signs shall authorize their erection and maintenance for a period not exceeding thirty (30) days. Said permits may be renewed for additional thirty (30) day periods. Any temporary sign not otherwise exempted by Section 1140.04 shall be removed at the expiration of the temporary sign permit period.