(a) Location. No roof sign shall have a surface exceeding 300 total square feet or 5% of the total roof area of the combined building on the site, or have its highest point extended more than a distance equal to the sign's longest horizontal dimension, but in no case shall the height exceed 50 feet above the roof.
(b) Construction.
(1) Every roof sign shall be thoroughly secured to the building by iron or other metal anchors, bolts, supports, rods or braces. When erected upon buildings which are not constructed entirely for fireproof material, the bearing plates of such sign shall be fastened or attached directly upon the masonry walls and intermediate steel columns in the building or structure. No roof sign shall be supported or anchored to a wooden framework of a building or other structure.
(2) Roof signs, including the uprights, supports and braces thereof, shall be constructed of noncombustible materials, provided, however, that facings, figures, decorations, and structural trim thereof may be made of combustible materials approved by the Richland County Department of Building Regulations and Fire Chief.
(c) Erection.
(1) Roof signs shall be thoroughly secured and anchored to the frame of the building over which they are constructed and erected so that they will safely sustain wind pressures in accordance with the Richland County Department of Building Regulations.
(2) No roof sign shall be erected in a manner which prevents free passage from one part of the roof to any other part thereof.
(3) Roof signs shall have a passage clear of all obstructions under or around and immediately adjacent to all roof signs exceeding a height of five feet above the level of the roof. Such passages shall be not less than three feet wide and four feet high measured from the level of the roof. If the roof sign is mounted or placed at right angles to the face of the building, such passageway shall be within 20 feet of the building face.
(Ord. 4-2012, passed 5-7-2012)