Spacing for minimum footcandle (fc) illumination on level ground:
Note: 1fc for commercial projects / .3fc for residential projects
Footcandles: | ||
---|---|---|
Distance | TD-12 | TD-18 |
4' | 1.2 | 1.7 |
6' | .27 | .53 |
8' | .08 | .53 |
10' | .15 | .27 |
12' | .08 | .18 |
14' | .03 | .09 |
16' | .01 | .03 |
18' | .01 | |
For conversion to lumens, multiply footcandles x 10. |