Lighting Engineering

Workshop and Road Lighting Illuminance Calculator

Workshop and Road Lighting Illuminance Calculator engineering calculator.

Quick Answer

Calculate Workshop and Road Lighting Illuminance Calculator

Calculator

Average horizontal illuminance (lx)
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Result Interpretation

Workshop and Road Lighting Illuminance Calculator computes Average horizontal illuminance in lx using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Transverse spacing between luminaires = 5
  • Longitudinal spacing between luminaires = 12
  • Light loss factor (maintenance factor) = 0.75
  • Coefficient of utilization = 0.62
  • Luminous flux per luminaire = 15000

Expected Result:

  • Average horizontal illuminance = 116.25

Engineering Interpretation:

Under the given input conditions, the calculated result is: Average horizontal illuminance = 116.25 lx.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

average horizontal illuminance = (luminous flux per luminaire * coefficient of utilization * maintenance factor) / (longitudinal spacing between luminaires * transverse spacing between luminaires)

Formula family: formula_lighting_workshop_lighting_road_lighting_level_calculator

Variables

SymbolLabelRoleDescription
lumens_per_luminaire Luminous flux per luminaire INPUT Luminous flux per luminaire
utilization_factor Coefficient of utilization INPUT Coefficient of utilization
maintenance_factor Light loss factor (maintenance factor) INPUT Light loss factor (maintenance factor)
spacing_length Longitudinal spacing between luminaires INPUT Longitudinal spacing between luminaires
spacing_width Transverse spacing between luminaires INPUT Transverse spacing between luminaires
Average horizontal illuminance Average horizontal illuminance OUTPUT Average horizontal illuminance

Calculation Steps

  1. Enter the luminous flux per luminaire in lm.
  2. Enter the coefficient of utilization in dimensionless.
  3. Enter the light loss factor (maintenance factor) in dimensionless.
  4. Enter the longitudinal spacing between luminaires in m.
  5. Enter the transverse spacing between luminaires in m.
  6. Step 1: Compute average horizontal illuminance.
  7. Read the average horizontal illuminance (lx) from the results.

Engineering Summary

Calculate Workshop and Road Lighting Illuminance Calculator

Frequently Asked Questions

What does this calculator calculate?

The Workshop and Road Lighting Illuminance Calculator estimates Average horizontal illuminance based on the input parameters you provide

Why is luminous flux per luminaire important in this calculation?

luminous flux per luminaire is directly proportional to average horizontal illuminance. When you enter luminous flux per luminaire in lm, the calculator uses it in the engineering formula to compute the output

How should I interpret the result average horizontal illuminance?

The calculator outputs average horizontal illuminance in lx. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Luminous flux per luminaire (lm), Coefficient of utilization (dimensionless), Light loss factor (maintenance factor) (dimensionless), Longitudinal spacing between luminaires (m), Transverse spacing between luminaires (m). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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