Appendix 9. Lighting Design Guidelines


Latest version.
  • (a)

    Area Lighting. Light sources for illuminating sidewalks, passageways, parking areas, rear and side yard areas, and common areas shall be maintained in operable condition and remain illuminated during the evening and nighttime hours; and:

    (1)

    Shall be shielded - from casting light higher than 15 degrees below the horizontal plane, as measured from the light source. They shall not cast light directly into adjacent residential windows; a translucent or optical lens diffuser globe or shield is recommended. (The Esplanade is a special condition; see below.)

    (2)

    Maximum mounting height - of light sources for ground level illumination shall be 14 feet, measured from the finished grade of the area to be lit.

    (3)

    Low pressure sodium lighting - should not be used.

    (b)

    Ornamental Fixtures. Ornamental fixtures are fixtures not used as primary area lighting and mounted with visible light sources:

    (1)

    With clear or no diffuser. Individual lamp wattage should not exceed 60 watts incandescent, 20 watts fluorescent, or 40 watts high intensity discharge (H.I.D., such as metal halide, high pressure sodium, or mercury vapor lamps).

    (2)

    With frosted or optical (fresnel type) diffuser. Individual lamp wattage may not exceed 100 watts incandescent, 40 watts fluorescent, or 70 watts H.I.D.

    (3)

    Replacement fixtures. Replacement fixtures - should be readily available.

    (c)

    Special Condition: The Esplanade. The following recommendations are intended to promote an attractive nighttime pedestrian environment. They apply to lighting installations by either the private or public sector.

    (1)

    Recommended lamp color/types. Metal halide (3,000 degrees K.), color-corrected ("white") high pressure sodium (HPS), color-corrected fluorescent (2,700 3,000 degrees K), incandescent.

    (2)

    Lamps not appropriate. Tandard ("peach") high pressure sodium, low pressure sodium, standard mercury vapor, cool white fluorescent.

    (3)

    Metalwork. Metalwork portions of lighting should be architecturally related to the building architecture. Color and finish of lighting metalwork should harmonize with the building's metalwork, if any.

    (4)

    Recommended lens. Clear borosilicate glass globes, clear acrylic or polycarbonate globes with optical diffusing (fresnel) patterns, translucent clear (frosted) or white acrylic or polycarbonate globes.

    (5)

    Lens types not appropriate. Clear or tinted, smooth finish acrylic or polycarbonate globes (they tend to show scratches and wear after several years).

    (6)

    Fence/wall lighting. Recommended lamps, fixtures, and location are: 100 W/3,000 K metal halide lamps; traditional white globe lens, approx. 18-inch diameter; 12-foot to 13-foot mounting height; spacing at 40 feet on center. Lights are recommended to be mounted on wall pilasters; however if this is not feasible, light standards should be installed with the same spacing and specifications listed above.

(Ord. No. 5431, § 2, 2-25-03)