(A) Signs placed on or above the roof of any building shall not be permitted except by approval of Council as a variance when it is determined by Council that a roof sign would be the only means of adequate identification and when the following regulations are complied with.
(B) No signboard shall be placed on the roof of any building so as to prevent the free passage from one part of the roof to any other part or interfere with any opening thereon. No signboard shall project beyond the edge of the roof in any direction and if over four feet in height shall be so constructed as to leave a clear space of at least six feet between the roof level and the lowest part of the sign and at least five feet clearance between the vertical supports. Every roof sign over four feet in height shall be set back at least five feet from the face of any front, rear or sidewall.
(C) If the roof sign is illuminated, lighting reflectors may project six feet beyond the building line.
(D) Signs shall be designated to withstand a wind pressure of 30 pounds per square foot of area subject to such pressure.
(E) Roof sign structures may be erected upon fireproof buildings to a height of not exceeding 50 feet above the roof and upon nonfireproof buildings to a height not exceeding 30 feet above the roof level.
(F) For signs over four feet above the roof, the portion of such structure covered and exposed to wind pressure shall not exceed one-third the total area thereof. All such signs shall be thoroughly secured to the building upon which they are installed, erected or constructed by iron or metal anchors, bolts, supports, chains, stranded cables, steel rods or braces.
(G) In no case shall any roof sign for any single business or industrial enterprise exceed three square feet per lineal feet of occupied building frontage with a maximum of 150 square feet.
(H) Roof signs when approved shall be in lieu of wall signs.
(`94 Code, § 1179.09) (Ord. 4-93, passed 2-9-92) Penalty, see § 154.999