<p> SUGGESTED LIGHT LEVELS Application Footcandle Level How Measured AUDITORIUMS</p><p>Social Activities 5 Measured average</p><p>Assembly only 10 Measured average</p><p>Exhibitions 30 Measured at exhibit</p><p>GYMNASIUMS</p><p>Assemblies 10 Measured average</p><p>General exercise & recreation 30 Measured average</p><p>Exhibitions, matches 50 Measured average</p><p>OFFICES</p><p>Corridors, stairways 5-10 (or not less than 1/5 of Measured average (at floor) the level in adjacent areas) Reading, transcribing 70 Measured at work station</p><p>Regular office work 40-60 Measured at work station</p><p>Prolonged office work 55-90 Measured at work station</p><p>Visually difficult office work 80-210 Measured at work station</p><p>BUILDING EXTERIORS</p><p>Active (pedestrian and/or 5 Measured average conveyance Inactive (normally locked, 1 Measured average infrequently used) Vital locations or structures 5 Measured average</p><p>Building surrounds 1 Measured average</p><p>SCHOOLS</p><p>Reading printed material 30 Measured at work area (on desk) Reading pencil writing 70 Measured at work area</p><p>Drafting, benchwork 100 Measured at work area</p><p>Lip reading, chalkboards, 50-100 Measured at work area (i.e. on sewing chalkboard) CLASSROOMS</p><p>Art rooms 70 Measured average</p><p>Drafting rooms 100 Measured average</p><p>Sewing room 150 Measured average</p><p>Cooking room 100 Measured average</p><p>Note taking 30 Measured work area</p><p>LABORATORIES </p><p>Dissection, experiments, etc. 100 Measured work area</p><p>LECTURE ROOMS</p><p>Audience area 30 Measured average</p><p>Demonstration area 50-100 Measured work area</p><p>MUSIC ROOMS</p><p>Simple scores 30 Measured work area</p><p>Advanced scores 70 Measured work area</p><p>SHOPS</p><p>Operate Machinery 100 Measured work area</p><p>STUDY HALLS/LIBRARY/COMPUTER LAB</p><p>Studying/typing 30 Measured work area TYPICAL SCHOOL LIGHTING TECHNOLOGIES</p><p>Specific Lighting Technologies Watts are for bulb only; multiplier in Worksheet, Column D adjusts for ballast wattage.</p><p>Type Watts Lumens Where Used How to Recognize Incandescent: Overall room lighting; display & Standard accent lighting 25 W 25 215 60 W 60 860 100 W 100 1,750 filament burns very hot Incandescent: Highly effective "PAR"(Parabolic reflective flood light used for aluminized reflectors) recessed indoor 75 W lighting & 100 W 75 1,200 outside lighting 150 W 100 1,750 have very thick glass 150 2,580 Incandescent: Reflective flood light used for "R" (Reflector) recessed lighting; indoor only 75 W 75 1,200 100 W 100 1,750 150 W 150 2,580</p><p> have very thin glass Incandescent: Outside safety lighting Tubular quartz halogen 500 WQ 500 10,600 have a very long filament; 1000 WQ 1000 23,100 produce clear, white light</p><p>Fluorescent: R/PAR for overall room lighting; • Desk/table types: CFL (compact small CFLs desk/table lamps fluorescent lamp) 5 W 5 250 28 W 28 1,800 Fluorescent: Overall room lighting Tubular 4ft T12 Standard 40 3,050 T12"Supersaver" 34 2,850 1 1/2" diam., 4 ft. long tubes found in rectangular housing; may have 1 - 4 lamps; will cast a shadow or can actually be seen, depending on housing Fluorescent Overall room lighting 1 1/2 " diam., 8 ft. long tubes Tubular 8 ft in long rectangular housing T12 Standard 75 6,000 typically containing two tubes; T12"Supersaver" 60 5,800 see above to count number of tubes Fluorescent Overall room lighting 1"diam.; 4 ft. long tubes in Tubular 4 ft rectangular housing; see above T8 Standard 32 2,900 to count tubes Fluorescent Overall room lighting U-tube Standard 40 3,050 "Supersaver" 34 2,850 HID (high intensity Outside safety lighting; sometimes discharge): Mercury in gyms Vapor 175 W 175 7,300 Have a clear "arc" tube inside 400 W 400 21,000 the lamp; bluish light HID: Metal Halide Used in gyms & other spaces with Resemble HID mercury vapor 400 W high ceilings; mostly for outdoor lamps; 1000 W 400 32,000 lighting Look for white caps on one or 1000 _____ both arc tube ends; very bright light HID: High pressure Mostly used for safety and Resemble mercury vapor sodium roadway lighting lights; 70 W 70 6,300 have very slender, ceramic arc 100 W 100 9,500 tube 400 W 400 50,000 </p>