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To demystify the lighting discussion, here are some recommended lighting levels that will give you a feeling for the amount of light you'll find under various circumstances. I had to add the values for Lux because most lighting engineers in this country still use footcandles. Wilhelm's use of Lux as a measure of illumination has caused a certain amount of confusion. Recommended Light Levels Task Area Footcandles Lux(approx) Corridors/Stairways/Restrooms 10-20 107-214 Storage Rooms 10-50 107-538 Conference Rooms 20-50 214-538 General Offices 50-100 538-1070 Drafting/Accounting 100-200 1070-2140 Areas with VDTs 75 807 Classrooms 50-75 538-807 Cafeterias 50 538 Gymnasiums 30-50 322-538 Merchandising 30-150 322-1614 Manufacturing Assembly 50-500 538-5380 Note: to find equivalent Lux, multiply footcandles by 10.76391 Wilhelm's tests simulate a viewing level of 450 Lux. Tony Karp, TLC Systems Corp email@example.com Visit our web sites: Techno-Impressionist Museum: http://www.techno-impressionist.com TLC Systems: http://www.tlc-systems.com - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.