A. Wind Pressure: Every billboard shall be firmly and solidly constructed so as to be able to bear a wind pressure of at least thirty (30) pounds per square foot of area; provided, that billboards which are placed upon roofs must be so constructed as to be able to withstand a lateral wind pressure of forty (40) pounds per square inch of area.
B. Obstructing Fire Escapes: It shall be unlawful to erect or maintain any billboard in such a position as to obstruct any fire escape or any window or door leading thereto, and no billboard shall be fastened to any fire escape.
C. Height Above Ground: Every billboard must be so constructed as to leave an open space of at least two and one-half feet (21/2') between the bottom of the display area and the ground. This open area may be filled with latticework or other ornamental design which does not close off more than two- thirds (2/3) of any square foot of such open area. Billboards constructed on property on which there is a properly established building line must be built entirely in back of this building line, and no permit shall be issued for the construction of any billboard on any lot which is subject to a proper building line restriction if the billboard is to be constructed in violation of the building line restriction.
D. Fireproof Construction: It shall be unlawful to construct any billboard of over fifteen (15) square feet in area anywhere in the fire limits unless the face of such billboard is constructed of noncombustible material.
E. Roof Signs: It shall be unlawful to construct any billboards on the roof of any building or structure of any but incombustible materials. All such roof signs or billboards must be so constructed that there is at least four feet (4') of space between the billboard or signboard and the edge of the roof at all sides and ends. It shall be unlawful to construct any roof sign or billboard on the roof of any building which is unable to stand the additional weight and wind pressure imposed by such construction. All roof signs and billboards which are constructed on buildings which are not entirely of fireproof materials shall be so constructed and braced that the supports of such signs or billboards shall bear directly on the masonry walls of such buildings or upon the steel girders which are supported by the masonry walls. The metal supports and parts of every roof sign shall be thoroughly and properly painted at least once each two (2) years, unless these are galvanized or otherwise adequately protected against rust and corrosion.
F. Billboards Against Buildings: It shall be unlawful to construct any billboard, a majority of the display area of which is within four feet (4') of any building, unless such billboard is constructed of noncombustible material.
G. Illuminated Billboards: The wiring of illuminated billboards and signboards must comply with the provisions of this code relating to electrical wiring. (1982 Code § 4-5-5)