SUPPLEMENTAL REGULATIONS
Use/Task | Maintained Footcandles | Uniformity Ratio | |
|---|---|---|---|
(a) | Streets, local commercial • Streets, residential (when lighting is required) | 0.9 avg. 0.4 avg | 6:1 avg:min 6:1 avg:min |
(b) | Parking, residential (when lighting is required) | 0.2 min | 5:1 avg:min* |
(c) | Parking, e.g., shopping centers/fast-food facilities, recreational/civic/cultural events, office parks, hospitals, commuter lots, etc. | 0.5 min | 5:1 avg:min* |
(d) | Parking, e.g., neighborhood shopping, industrial employee parking, schools, churches | 0.2 min | 5:1 avg:min* |
(e) | Sidewalks | ||
• Commercial • Residential (when lighting is required) | 1.0 avg 0.5 avg | 5:1 avg:min 5:1 avg:min | |
(f) | Building entrances, commercial, industrial, institutional | 5.0 avg | |
(g) | Service station pump islands | 20.0 avg | 4:1 avg:min |
(h) | Car dealerships (front row/other sales areas) | 20/10 max | 5:1 max:min |
NOTES: | |
|---|---|
1. | Illumination levels are maintained horizontal footcandles on the task, e.g., pavement or area surface. |
2. | Uniformity ratios dictate that average illuminance values shall not exceed minimum values by more than the product of the minimum value and the specified ratio, e.g., for high-activity commercial parking, the average illuminance shall not exceed 3.6 footcandles (0.9 x 4). |
* | In no case shall the maximum to minimum uniformity ratio for parking be in excess of 20:1. |
SUPPLEMENTAL REGULATIONS
Use/Task | Maintained Footcandles | Uniformity Ratio | |
|---|---|---|---|
(a) | Streets, local commercial • Streets, residential (when lighting is required) | 0.9 avg. 0.4 avg | 6:1 avg:min 6:1 avg:min |
(b) | Parking, residential (when lighting is required) | 0.2 min | 5:1 avg:min* |
(c) | Parking, e.g., shopping centers/fast-food facilities, recreational/civic/cultural events, office parks, hospitals, commuter lots, etc. | 0.5 min | 5:1 avg:min* |
(d) | Parking, e.g., neighborhood shopping, industrial employee parking, schools, churches | 0.2 min | 5:1 avg:min* |
(e) | Sidewalks | ||
• Commercial • Residential (when lighting is required) | 1.0 avg 0.5 avg | 5:1 avg:min 5:1 avg:min | |
(f) | Building entrances, commercial, industrial, institutional | 5.0 avg | |
(g) | Service station pump islands | 20.0 avg | 4:1 avg:min |
(h) | Car dealerships (front row/other sales areas) | 20/10 max | 5:1 max:min |
NOTES: | |
|---|---|
1. | Illumination levels are maintained horizontal footcandles on the task, e.g., pavement or area surface. |
2. | Uniformity ratios dictate that average illuminance values shall not exceed minimum values by more than the product of the minimum value and the specified ratio, e.g., for high-activity commercial parking, the average illuminance shall not exceed 3.6 footcandles (0.9 x 4). |
* | In no case shall the maximum to minimum uniformity ratio for parking be in excess of 20:1. |