| Area |
|
Minimum
Horizontal Illuminance2
lux (fc) |
Maximum
Max-to-Min
Ratio |
Minimum
Vertical Illuminance3
lux (fc) |
| Basic1 |
|
10 (1.0) |
10:1 |
5 (0.5) |
| Ramps4 |
Day5 |
20 (2.0) |
10:1 |
10 (1.0) |
| Night |
10 (1.0) |
10:1 |
5 (0.5) |
Entrance
Areas |
Day5 |
500 (50) |
|
250 (25) |
| Night |
10 (1.0) |
10:1 |
5 (0.5) |
| Stairways |
|
20 (2.0) |
|
10 (1.0) |
1 = Typical conditions
2 = Measured on the parking surface without any shadowing effects.
3 = Measured 1.5m above parking surface at point of lowest horizontal
illuminance (not including points on the boundaries facing outward.)
4 = Applies to clearway ramps (no adjacent parking) but not to sloping floor designs.
5 = Daylight may be considered in the design calculation.
|
| Application |
Task |
Average Horizontal Illuminance |
Vertical Illuminance |
Avg-to-Min Ratio |
Footnotes |
| ATMs & Night Depositories (Exterior) |
Face of ATM |
|
150 |
3:1 |
d,e,f |
| Within 10' of ATM |
100 |
a |
|
| Between 10' and 50' from ATM |
20 |
a |
3:1 |
| Supported Parking |
20 |
a |
3:1 |
| Side of Building out to 40' when ATM is within 10' of corner |
20 |
|
3:1 |
| Building Facades |
|
5-20 |
8:1 |
|
| Building Interiors (Unoccupied patrol areas) |
10 |
|
6:1 |
|
| Convenience Stores and Gas Stations |
Pump Island |
60 |
a |
4:1 |
|
| Sidewalks, refuse areas and grounds |
30 |
a |
4:1 |
|
| Interior of store |
300 |
a |
4:1 |
|
| Facial Identification |
|
5-8 |
4:1 |
|
| Fast Food Restaurants |
General Parking |
30 |
a |
3:1 |
|
| Drive-up window out to 30' |
60 |
a |
3:1 |
|
| Refuse area |
30 |
a |
3:1 |
|
| Guarded Facilities |
Entrances and Gatehouse inspection |
100 |
a |
3:1 |
b |
| Guardhouse Interior |
|
|
|
c |
| Hotels and Motels |
General parking |
30 |
a |
4:1 |
|
| Sidewalks and grounds |
10 |
a |
4:1 |
|
| Law Enforcement, Fire, Ambulance and other Emergency Service Facilities |
Within 60' of all vehicle and pedestrian movement areas |
80 |
a |
3:1 |
|
General parking and walkways
|
30 |
a |
3:1 |
|
| Parking Facilities, Garages and Covered Parking Spaces |
On Pavement |
60 |
a |
4:1 |
|
| Gathering Points (stairs, elevators, ramps) |
50 |
a |
4:1 |
|
Parking Garages
For the Elderly |
Entrance |
500 |
a |
|
i |
| Exterior walkways around senior facilities |
50 |
a |
|
l |
| Parking Lots, Areas for Public Parks |
Open parking spaces |
30 |
a |
4:1 |
|
| Park trails and walkways |
6 |
a |
4:1 |
j |
| Likely loitering areas |
10 |
a |
4:1 |
|
| Residence, Single Family |
Exterior Doorways |
|
8 |
|
|
| Residence, Multi-family |
Common areas |
30 |
a |
4:1 |
|
| Common mailbox areas |
100 |
a |
4:1 |
|
| Schools and Institutions |
General parking |
30 |
a |
4:1 |
l |
| Sidewalks and footpaths |
10 |
a |
4:1 |
l |
| Supermarket, Major Retail Parking |
Parking lot |
30 |
a |
4:1 |
|
| Low activity - close-in parking |
50 |
a |
4:1 |
k |
| Identifier |
Note |
| a |
Vertical illuminance of 5 to 8 lux or values that produce a uniformity ratio of no more than 4:1 (25% of horizontal illuminance).
|
| b |
Horizontal illuminance should be as shown or twice that of immediate surrounding area, whichever is greater |
| c |
Interior illuminance should be minimum recommended for specific task performance |
| d |
Redundant lamps so loss of any one lamp will not reduce lighting levels below minimum |
| e |
Good to excellent facial recognition required at a distance of 30'.
|
| f |
Unobstructed view out to 50' in all directions from face of machine |
| i |
See IESNA RP-28, "Lighting and the Visual Environment for Senior Living" |
| j |
Lighting should extend out on both sides of trail to a distance of 30' |
| k |
Size of parking area determined by estimated customer count |
| l |
For special events, parking lots and grounds should be lit from 2 hours prior to the event through 2 hours after the event. |
