Every sign and its support shall be capable of withstanding a wind pressure of 30 pounds to the square foot with a safety factor of four. All signs, if attached parallel to a building, shall be placed in close contact to the walls thereof. If projecting from the building, the sign shall be attached with an open space of not less than eight inches between any portion of the sign and the wall or roof or other portion of the building, in order to avoid the accumulation of combustible substances. Every sign shall be installed so as to be secure and safe with respect to persons and property.
(2009 Code, § 98.20) Penalty, see § 155.999