Light Fixture Calculator

The appropriate number of recessed, 2’x4′ troffer light fixtures required for your A-WALL building will depend on its size and the intended application. Different tasks require different levels of illumination for safety and accuracy of visual performance. The A-WALL light fixture calculator will provide you with a suggested number of light fixtures, in accordance with the information you provide and the basis for the calculations stated below.

Instructions for using the light fixture calculator

Enter the light level you require (see chart of typical applications).
Enter the nominal length and width of your building.
Select the appropriate ceiling/wall height.
Submit your data by selecting “CALCULATE” to display the suggested number of fixtures.

Calculations based on recessed, 2' x 4' troffer fixtures with 4 - 32 watt, T8 linear fluorescent lamps, foot candles at 30" work surface, clean environment with lamps cleaned annually, 80% ceiling reflectance, 50% wall reflectance, and 20% floor reflectance.

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A Division of Warwick Products.
2245 West 114 Street
Cleveland, Ohio 44102

Phone - 216-252-9292 | 800-345-4400

FAX - 216-889-1263 | 888-432-9274

E-mail: info@a-wall.com
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Lighting Levels

The Illuminating Engineering Society (lES) recommends a range of footcandle levels to ensure adequate illumination and safety for occupants.

A footcandle is defined as the illumininance on one square foot surface from a uniform light source.
Below is a guideline for common modular building applications to assist in achieving appropriate light levels with the greatest energy‐efficiency. The required light levels are indicated in a range because different tasks require different amounts of light. In general, low contrast and detailed taks require more light while high contrast and less detailed tasks require less light.

Building Area/Task-Footcandle Range

Assembly ‐ Large Items: 15-60fc
Assembly ‐ Small Items: 50-200fc
Breakroom: 5-20fc
Cafeteria: 20-30fc
Classroom: 30-50fc
CMM Room: 50-100fc
Component Mfg. ‐ Large: 15-60fc
Component Mfg. ‐ Medium: 25-100fc
Conference Room: 30-50fc
Corridor: 10-40fc
Laboratory: 75-120fc
Lobby: 20-30fc
Locker Room: 10-30fc
Office ‐ Private or Open: 30-70fc
Storage Room: 5-20fc

Light level:	foot-candles
Length:	feet
Width:	feet
Ceiling height:
Suggested number of 2' x 4' fixtures needed: 0