Input
Results
Lumens reaching surface per pole—
Spacing S (m)—
Spacing/Width ratio—
# poles per km—
Method
Eav = (lampLm · CU · LLF) / (S · W). Solve for S = (lampLm · CU · LLF) / (Eav · W). For opposite or staggered, effective spacing per side is doubled (use S/2 per pole on each side).