(a) This division does not apply to signs that are not visible from outside the premise on which they are located.
(b) Signs in this district are permitted in or overhanging the public way subject to city franchise requirements.
(c) Except in Subdistrict A, Subdistrict B, and Subdistrict C, no sign may obscure a window or a significant architectural element of a building.
(d) Sign hardware may be visible if its structural elements have been specifically devised for their intrinsic contribution to an overall visual effect. Utilitarian hardware intended only for functional purposes must be concealed from normal view.
(e) Mounting devices supporting a projecting attached sign must be fully integrated with the overall design of the sign.
(f) Materials, fasteners, and anchors used to manufacture and install signs must be resistant to corrosion.
(g) Paints and coatings must contain a UV inhibitor to retard the discoloration and fading effects of ultraviolet light. In addition to finish coats, bare metals must have a primer coat or other surface pretreatment as recommended by the paint or coating manufacturer.
(h) Electrical power required for signs must be supplied by means of concealed conduit from an appropriate power source to the sign in accordance with city codes and accepted practices of the trade. Electrical disconnects, transformers, and related apparatus, including wiring and conduit, must be concealed from normal view.
(i) No signs may be illuminated by an independent external light source.
(j) Burned out or defective lights in signs must be replaced within a reasonable time. Failure to comply with this provision may result in sign permit revocation.