A. The area of painted signs, individual letter signs, and other indirectly illuminated signs is calculated on the basis of the smallest rectangle, circle or spherical figure that will enclose the entire copy area of the sign. Any such calculation must include the areas between letters and lines, as well as the areas of any devices, illuminated or nonilluminated, which are intended to attract attention.

B. Where signs are placed on a display board attached to a wall or weather protection feature, the entire display board must be included in the sign area calculations. Where the display board includes a visible frame, only the area inside the frame must be included in the sign area calculations.

C. For freestanding signs, the entire display board must be included in the sign area calculations. Where the display board includes a visible frame, only the area inside the frame must be included in the sign area calculations.

D. Multiple-faced signs must have each face measured separately. The sign area allotment for each sign type applies to just one side of the sign. For example, if the maximum size for a certain monument sign is 25 square feet, then each face of the monument sign may be up to 25 square feet.

E. Four or more faced signs, spherical, free-form, sculptural or other nonplanar sign area is measured as 50 percent of the sum of the areas using only the four vertical sides of the smallest four-sided polyhedron that will encompass the sign structure, as shown in Figure 19.67.050(2). Signs with greater than four polyhedron faces are prohibited.