21.34.120 Mounting and Illumination Standards Tables.
|
Table 21.34.120A |
|||||
|---|---|---|---|---|---|
|
Condition/Type of Lighting |
Within 50 feet of residential zones |
Canopy Lighting and Lighting of Service Stations (applies to areas around service station pump islands) |
Outdoor Performance, Sport and Recreation Facilities and Play Fields (low-level lighting system) |
Architectural Accent Lighting |
|
|
Maximum Mounting Height |
15 feet above grade |
15 feet if alternative to full cutoff fixture as defined by the Illuminating Engineering Society of North America (IESNA) or on top level of multilevel parking facilities 25 feet otherwise |
N/A |
N/A |
N/A |
|
Minimum Foot-candles (fc) on Ground |
N/A |
Basic Security = 0.2 fc Enhanced Security = 0.5 fc |
1.0 fc |
N/A |
N/A |
|
Maximum Foot-candles (fc) on Ground |
N/A |
Basic Security = 4.0 fc Enhanced Security = 7.5 fc |
5.0 fc |
N/A |
N/A |
|
Average Foot-candles (fc) on Ground |
N/A |
N/A |
N/A |
3.0 fc |
N/A |
|
N/A |
Basic Security = 20:1 Enhanced Security = 15:1 |
4:1 |
4:1 |
N/A |
|
|
Minimum Foot-candles at 5 feet above Ground |
N/A |
Basic Security = 0.1 fc Enhanced Security = 0.25 fc |
N/A |
N/A |
N/A |
|
Maximum Foot-candles (fc) of any vertical surface in dark surroundings |
N/A |
N/A |
N/A |
N/A |
3.0 fc |
|
Maximum Foot-candles (fc) of any vertical surface in light surroundings |
N/A |
N/A |
N/A |
N/A |
5.0 fc |
|
Table 21.34.120B |
||||||
|---|---|---|---|---|---|---|
|
Condition/Type of Lighting |
Large Open Areas |
Perimeter Fence |
Entrances (in inspection area) |
Gatehouses (measured on the work-plane in the gatehouse) |
Pedestrian Pathways and Access Routes |
|
|
Average Foot-candles (fc) on Ground |
0.5 – 2.0 fc1 |
0.5 – 2.0 fc1 |
0.5 fc |
10 fc |
30 fc |
4 – 6 fc |
|
TABLE NOTES: 1 The greater the brightness of the surrounding area, the higher the illuminance required to balance the brightness. |
||||||