| |
Footcandles |
Lux |
| Building
Exterior-Site areas adjacent to |
|
Active Entrances-pedestrian or vehicle |
5 fc |
50 lx |
|
Inactive Entrances - normally locked |
3 fc |
30 lx |
|
Vital locations or structures (security) |
5 fc |
50 lx |
|
Building surroundings |
1 fc |
10 lx |
| Parking
Areas |
|
High Activity |
3.6
fc |
36 lx |
|
Medium Activity |
2.4
fc |
24 lx |
|
Low Activity |
0.8
fc |
8 lx |
| Roadways
- Non-dedicated and Private |
|
High Activity |
2 fc |
20 lx |
|
Medium Activity |
1 fc |
10 lx |
|
Low Activity |
0.5
fc |
5 lx |
| Signs |
|
Bright surroundings, light surfaces |
30 fc |
500
lx |
|
Bright surroundings, dark surfaces |
50 fc |
1000
lx |
|
Dark surroundings, light surfaces |
10 fc |
200
lx |
|
Dark surroundings, dark surfaces |
30 fc |
500
lx |
| Buildings
(Suburban) |
|
Terra Cotta, light marble, plaster |
10 fc |
100
lx |
|
Bedford or buff limestone, smooth buff face brick, concrete, aluminum |
15 fc |
150
lx |
|
Smooth or medium gray brick, common tan or dark field gray brick |
20 fc |
200
lx |
|
Brownstone, stained shingles, other dark surfaces |
35 fc |
350
lx |
