(A) All non-exempt outdoor lighting fixtures shall have shielding as required by the table below in this division (A).
FULLY SHIELDED. Outdoor light fixtures shielded or constructed so that no light rays are emitted by the installed fixture at angles above the horizontal plane as certified by a photometric test report.
PARTIALLY SHIELDED. Outdoor light fixtures shielded or constructed so that no more than 10% of the light rays are emitted by the installed fixture at angles above the horizontal plane as certified by a photometric test report.
Table 2: Shielding Requirements | |
Fixture Lamp Type | Shielding |
Table 2: Shielding Requirements | |
Fixture Lamp Type | Shielding |
Low pressure sodium | Partially |
High pressure sodium | Fully |
Metal halide | Fully 1, 5 |
Fluorescent | Fully 2, 4 |
Quartz | Fully 3 |
Incandescent greater than 160 watts | Fully |
Incandescent 160 watt or less | None |
Any light source of 50 watt or less | None |
Glass tubes filled with neon, argon, or krypton | None |
Other source | As approved by the Building Official |
(B) (1) Metal halide lighting, used primarily for display purposes, shall not be used for security lighting after 11:00 p.m. or after closing hours if before 11:00 p.m. Metal halide lamps shall be installed only in enclosed luminaries.
(2) (a) Outdoor advertising signs of the type constructed of translucent materials and wholly illuminated from within do not require shielding.
(b) Dark backgrounds with light lettering or symbols are preferred, to minimize detrimental effects.
(c) Unless conforming to the above dark background preference, total lamp wattage per property shall be less than 160 watts.
(3) For the purposes of this subchapter, quartz lamps shall not be considered an incandescent light source.
(4) Warm white and natural lamps are preferred, to minimize detrimental effects.
(5) For filtering requirements for metal halide fixture lamp types, see Section 7.
(C) Existing outdoor lighting shall be brought into conformance with this chapter within two years from the date of adoption of the ordinance codified herein.
(Ord. passed 2-3-2011, § 2.26.100)