Spacing for minimum footcandle (fc) illumination on level ground:
Note: 1fc for commercial projects / .3fc for residential projects
Footcandles | ||
---|---|---|
Distance | DR-10 | DR-20 |
2' | 1.1 | 2.3 |
4' | .27 | .61 |
6' | .10 | .14 |
8' | .04 | .06 |
10' | .01 | .03 |
12' | .01 | |
For conversion to lumens, multiply footcandles x 10. |