18.70.070 Measurements.
(1) Measurements shall be taken as follows:
(a) Size. Size includes the height, length, and width of the sign structure. Measurements shall be rounded up to the nearest foot, or nearest square foot, as applicable.
(b) Sign Area. Sign area shall be expressed in square feet. Only one sign face is considered in calculating the sign area of a double-sided sign, except when the interior angle formed by the two sign faces is greater than 45 degrees, or when the two sign faces are greater than 18 inches apart, in which case all sign faces shall be considered in calculating the sign area. Where the sign area is three-dimensional, including but not limited to round or irregular solid shapes, the sign area shall be calculated by taking the largest cross-section and drawing a line around the outermost points of the cross-section. If there is open space between sections or modules of a sign area, the open space may be deducted from the calculation of the sign area.
(c) Lot or Building Frontage. The lot or building frontage of a business shall be measured along a publicly dedicated right-of-way or along a parking lot. When multiple businesses occupy a single building, the frontage shall be measured along each business’s frontage along a parking lot. This measurement shall be expressed in linear feet.
(d) Setbacks. Distances shall be measured from the property line to the nearest edge of the sign structure.
(e) Height. Sign height shall be measured from the grade to the top of the sign structure.
(f) Clearance. Clearance shall be measured from the grade to the bottom of the sign face.
(g) Spacing and Density. Distances shall be measured along a line parallel to the centerline of the adjacent street upon which the sign fronts and between the nearest edges of the sign structure which encompasses the sign face. A double-sided sign is counted as a single sign for the purpose of spacing and density limits.
(h) Maximum Luminance. Luminance shall be measured using a calibrated, certified photometer or nit gun as follows:
(i) Luminance measurements shall be taken during the hours beginning two hours after sunrise/sunset and two hours prior to the beginning of sunset/sunrise, as would be applicable to achieve the daytime and nighttime measurements.
(ii) Luminance measurements shall be taken from a position as close to the sign being measured as reasonably possible.
(iii) The photometer shall be positioned for measurements such that the sign being measured fills the central circle of the measurement area. If the sign being measured contains multiple colors, the photometer shall be positioned such that an area of the sign displaying all white fills the measurement area.
(iv) At least five measurements shall be made for each sign or sign area, and the readings recorded. The recorded measurements, including the date and time made and the permit number for the sign(s) in question, shall be provided by the owner/installer to the planning department within 30 days of permit issuance. (Ord. 2061 § 1, 2022)