Beam Overlap Planning Table
Formula-based comparisons of beam footprint diameter, row spacing and overlap allowance before a delivered-lux check.
Table PDFBeam Overlap Planning Table
Download the table with the page URL and retrieval date for offline lighting checks.
| Set-out condition | Footprint diameter | Row spacing | Overlap reading |
|---|---|---|---|
| 36 degree beam at 3.0 m effective height | 1.95 m | 1.50 m | 0.45 m overlap, about 23% of the beam diameter. |
| 60 degree beam at 2.4 m effective height | 2.77 m | 2.40 m | 0.37 m overlap, about 13% of the beam diameter. |
| 60 degree beam at 2.4 m effective height | 2.77 m | 2.00 m | 0.77 m overlap, about 28% of the beam diameter. |
| 90 degree beam at 2.4 m effective height | 4.80 m | 3.00 m | 1.80 m overlap, about 38% of the beam diameter. |
| 90 degree beam at 3.0 m effective height | 6.00 m | 3.00 m | 3.00 m overlap, about 50% of the beam diameter. |
| 120 degree beam at 2.4 m effective height | 8.31 m | 4.00 m | 4.31 m overlap, about 52% of the beam diameter. |