A. Two Hundred Sixty Lumens Or More: Light fixtures that have a maximum output of two hundred sixty (260) lumens or more shall have an opaque top to prevent up lighting.
B. One Thousand Lumens Or More: Light fixtures that have a maximum output of one thousand (1,000) lumens or more per fixture shall have an opaque top to prevent up lighting and the bulb shall not be visible.
C. One Thousand Eight Hundred Lumens Or More: Light fixtures that have a maximum output of one thousand eight hundred (1,800) lumens or more shall have a "full cut off shield" as herein defined. See figure 4, section 8-1A-2 of this title.
D. Floodlight Fixtures: Floodlight fixtures shall be located in such a manner as to prevent direct glare into a roadway and to minimize impact on abutting properties.
1. Floodlight fixtures shall be set to only go on when triggered by activity on the property (sensor activated) and to go off within five (5) minutes after activation has ceased.
2. Floodlight fixtures shall be installed so that they do not tilt more than forty five degrees (45°) from vertical.
E. Up Lighting: Up lighting shall only be allowed in cases where the fixture and any light it emits are shielded from the sky by a roof overhang or similar structural shield.
F. Display And Security Lighting: Display lighting shall be turned off within thirty (30) minutes after close of business and shall remain off until sunrise or the opening of the business on the following day, whichever comes first. There are no time restrictions regarding security lighting.
G. Installed Height Of Fixture:
1. The height of a freestanding light fixture shall not exceed twenty five feet (25') or the height of the principal permitted structure, whichever is less. Light fixtures mounted on a wall may extend to the full height of the structure, but no farther.
2. The following standards shall apply to floodlight fixtures with a maximum output of nine hundred (900) lumens or more and other light fixtures that have a maximum output of one thousand eight hundred (1,800) lumens or more. Streetlights installed by the Ada County highway district or Idaho department of transportation shall be exempt from these standards.
a. Within a commercial or industrial base district, the effective zone of light (as documented by the photometric test report) shall not trespass on abutting residential properties. See figure 6, section 8-1A-2 of this title.
b. Within a rural or residential base district, the allowed height shall be determined by the setback from the property line as set forth in table 8-4H-1 of this section.
TABLE 8-4H-1: HEIGHT OF LIGHT FIXTURES
BASED ON SETBACK
Height Of Pole
| Setback From Property Line | Height Of Pole | Setback From Property Line |
Height Of Pole
| Setback From Property Line | Height Of Pole | Setback From Property Line |
1 foot to 3 feet | 0 feet | 15 feet | 36 feet |
4 feet | 3 feet | 16 feet | 39 feet |
5 feet | 6 feet | 17 feet | 42 feet |
6 feet | 9 feet | 18 feet | 45 feet |
7 feet | 12 feet | 19 feet | 48 feet |
8 feet | 15 feet | 20 feet | 51 feet |
9 feet | 18 feet | 21 feet | 54 feet |
10 feet | 21 feet | 22 feet | 57 feet |
11 feet | 24 feet | 23 feet | 60 feet |
12 feet | 27 feet | 24 feet | 63 feet |
13 feet | 30 feet | 25 feet | 66 feet |
14 feet | 33 feet | ||
Note: Table is based on the formula H (height) = 3 + D (setback distance) / 3. | |||
H. Underground Electrical Feeds: Electrical feeds to outdoor light fixtures shall be underground, not overhead.
I. Neon Illumination: Neon illumination shall be prohibited in the rural base districts.
J. Alternative Lighting Plan: The director may approve, or recommend approval of, an alternative lighting plan when the overall design, as proposed by the applicant, meets or exceeds the intent and the requirements of this article and shall not be detrimental to the public health, safety, and welfare. (Ord. 389, 6-14-2000)