Task and WorkerCharacteristicsWorker's AgesSpeed and/ orAccuracy**Reflectanceof TaskBackground***FOR ILLUMINANCE CATEGORIESA THROUGH CRoom and OccupantCharacteristicsOccupant's AgesRoom SurfaceReflectances*Weighting Factor-1 0 +1Under 40 40-55 Over 55Greater Than 70% 30%-70% Less Than 30%INDOOR APPLICATIONSINDOOR APPLICATIONSJOB NAMETYPETI-51050I.E.S.N.A. ILLUMINANCE (FOOTCANDLE) RECOMMENDATIONSType of Activity Illumination Ranges of Illuminances ReferenceCategory Lux Footcandles Work PlanePublic spaces with dark surroundings A 30 3Simple orientation for shortB 50 5temporary visitsWorking spaces where visual tasks C 100 10are only occasionally performedPerformance of visual tasks of high D 300 30contrast or large sizePerformance of visual tasks of med. E 500 50contrast or small sizePerformance of visual tasks of low F 1000 100contrast or very small sizePerformance of visual tasks of low G 3,000-10,000 300-1000contrast and very small size over a prolonged periodINTERIOR CATEGORIES AND FOOT CANDLE RANGESGeneral lightingthroughout spacesIlluminance on taskIlluminance on taskobtained by a combination of general andlocal (supplementarylighting)FOR ILLUMINANCE CATEGORIESD THROUGH GWeighting Factor-1 0 +1Under 40 40-55 Over 55Not Important Important CriticalGreater Than 70% 30%-70% Less Than 30%Determine the weighting factors which apply for each Room-and-Occupantor each Task-and-Worker characteristic and add themalgebraically. If thesumis -2 or -3, use the lowest of the three footcandle values; if +2 or+3,use the highest value. Otherwise, use the middle footcandle value.I.E.S.N.A. Lighting Handbook 2000. Reprinted by permission.*Average weighted surface reflectances, including wall, floor and ceilingreflectances, if they encompass a large portion of the task area or visualsurround. For instance, in an elevator lobby, where the ceiling height is 7.6meters (25 feet), neither the task nor the visual surround encompass theceiling, so only the floor and wall reflectances would be considered.**In determining whether speed and/ or accuracy is not important, importantor critical, the following questions need to be answered: What are the timelimitations? How important is it to performthe task rapidly? Will errorsproduce an unsafe condition or product? Will errors reduce productivity andbe costly? For example, in reading for leisure there are no time limitationsand it is not important to read rapidly. Errors will not be costly and will not berelated to safety. Thus, speed and/ or accuracy is not important.If however, a worker is involved in exacting work, accuracy is critical because of the close tolerances, and time is important because ofproduction demands.***The task background is that portion of the task upon which the meaningful visual display is exhibited. For example, on this page themeaningful visual display includes each letter which combines with otherletters to formwords and phrases. The display medium, or task background,is the paper, which has reflectance of approximately 85%.TI-51050INDOOR APPLICATIONSAssemblySimple...........................................................DDifficult...........................................................FExacting........................................................GBanksLobbyGeneral...................................................CWriting Area...........................................DTeller's Stations..............................................EaConference Rooms......................................DDraftingCAD Stations Only...................................CMixed CAD and Paper Task.....................DMylarHigh Contrast media; India ink plastic leads, soft graphite leads.......................................................EaLow Contrast media; hardgraphic leads..........................................FaVellumHigh Contrast..........................................EaLow Contrast...........................................FaTracing PaperHigh Contrast..........................................EaLow Contrast...........................................FaOverlays Light Table.......................................CPrints..............................................................EEducational FacilitiesClassroomsGeneral (see Reading)Science Laboratories.................................ELecture RoomsAudience (see Reading)Demonstration..........................................FMusic Rooms (see Reading)Sight Saving Rooms..................................FStudy Halls (see Reading)Typing (see Reading)Food Service FacilitiesDining AreasCashier....................................................DCleaning..................................................CDining.....................................................CKitchen...........................................................EInspectionSimple...........................................................DDifficult...........................................................FExacting........................................................GLibrariesBook Stacks (vert. 30" above floor)Active Stacks......................................D(V*)Inactive Stacks....................................B(V*)Card Files......................................................DCirculation Desks...........................................DMachine ShopsRough bench or machine work.......................DMed. bench or machine workordinary automatic machines, rough grinding, med. buffing and polishing........................................................EFine bench or machine work, fineautomatic machines, mediumgrind-ing, mediumbuffing and polishing.................GExtra-fine bench or machine work,grinding, fine work........................................GMaterials HandlingWrapping, packing, labeling..........................DPicking stock, classifying.................................DLoading, inside truck bodies and freight cars....................................................CMerchandising SpacesAlteration Room..............................................FFitting RoomDressing Areas........................................DFitting Areas.............................................FLocker Rooms.................................................CStock Rooms..................................................DSales Transaction Area...................................DOfficesAccounting (see Reading)Conference Areas..........................................DGeneral/ Private Offices (see Reading)Lobbies, Lounges and ReceptionAreas......................................................CMail Sorting...................................................EOff-Set Printing and DuplicatingAreas......................................................CReadingCopied TasksMicro-Fiche Reader................................AdePhotographs, moderate detail ..................EeThermal Copy, or Poor Copy....................FaXerograph...............................................DXerograph, 3rd generationand greater..............................................EElectronic Data Processing TasksCRTScreens...........................................AdeGood Ribbon...........................................DPoor Ribbon.............................................E2nd Carbon & Greater.............................EInkjet Printer...................................................DKeyboard Reading.........................................DMachine RoomsActive Operations....................................DTape Storage...........................................DMachine Area .........................................CEquipment Service...................................EcThermal Print..................................................EHandwritten Tasks#2 Pencil/ Softer Leads............................Da#3 Pencil/ Harder Leads...........................EaBall-Point Pen..........................................DaFelt-Tip Pen..............................................DHandwritten Carbon Copies......................EWhite Boards...........................................BChalkboards...........................................EaPrinted Tasks6 Point Type............................................Ea8 & 10 Point Type...................................DaGlossy Magazines...................................DeMaps.......................................................ENewsprint................................................DTyped Originals.......................................DTelephone Books.......................................EService SpacesStairway, Corridors........................................BElevators, Freight/ Passenger...........................BToilets & Washrooms......................................BSheet Metal WorksMisc. Machines, Ordinary BenchWork.......................................................EPresses, Shears, Stamps, SpinningMediumBench Work................................ETestingGeneral.........................................................DExacting Tests, Extra-FineInstruments, Scales, Etc....................................FaTask subject to veiling reflections. bProvide higher level over food service or selection areas.cOnly when actual equipment service is in process. May be achieved by a general lighting systemor by localized or portable equipment.dVeiling reflections may be produced on glass surfaces. It may be necessary to treat plus weighting factors as minus in order to obtain proper illuminance.eEspecially subject to veiling reflections. It may be necessary to shield the task or to reorient it.fDegradation factors: Overlaysadd 1 weighting factor for each overlay; used materialestimate additional factors.*Vertical Illuminance.For a complete list of area/ activities, illuminance categories and specified illuminance values, see the I.E.S.N.A. Lighting Handbook, 9th Edition (2000), Chapter 10.Typical Illuminance CategoriesTI-51050INDOOR APPLICATIONSTERMINOLOGYCoefficient of Utilization (CU)Portion of lamp lumens which reach the work plane. Affected by fixture design, roomproportions and room-surface reflectances.Light Loss Factor (LLF)Depreciation of initial lighting level due to Lamp Lumen Depreciation (LLD), and accumulation of dirt on the lamp and luminaire surface(Luminaire Dirt DepreciationLDD). Affected by fixture design, lamp choice, number of burning hours and type of interior environment.Ballast Factor (BF)The commercial ballast performance relative to reference a ballast.LLF=LLD x LDD x BFSTANDARD FORMULASNumber of Luminaires=(Maintained Illuminance [FC] Desired)x(Area in Square Feet)(Lamp Lumens/ Luminaire)x(CU)x(LLD)x(LDD)x(BF)Maintained Illuminance=(Number of Luminaires)x(Lamp Lumens/ Luminaire)x(CU)x(LLD)x(LDD)x(BF)(Area in Square Feet)LAYOUTMOUNTING HEIGHT PRINCIPLES AND EXAMPLESBEFORE MAKING LAYOUT ON GRAPH PAPERLAYOUT TIPS1. For equal spacing of fixtures in both direction, take the square root of the square feet/ fixture value. For fixture locations where the spacing is greater than the square root in one direction, the product should approximately equal the square feet/ fixture value. Forexample, a 6'x8' spacing would give approximately the same illuminance as a 7'x7' spacing.2. Make Adjustments to:a. Avoid columns, sprinklers, or outlets, etc, that would interfere with the location of fixtures.b. Take advantage of structural elements that can be economically utilized to support the new fixtures.c. Obtain a layout that is harmonious with roomdimensions and the architectural elements of the space.d. If good footcandle uniformity is desired because of the proximity of work stations, the orientation of machinery, etc., then make adjustments to stay within themaximumfixture spacing-to-mounting-height ratios.3. For Recessed Fixtures:If exposed grid T ceiling, draw heavy line for Ts. Lay out for uniformdistance fromwalls. If task located near perimeter of space, start first fixture 2' fromside walland 2' fromend wall. If Ts are located on 2' centers in one direction and 4' centers in the other direction, remember that 2'x4' fixtures must be spaced some multipleof 2' in one direction, and a multiple of 4' in the other direction. The Ts are normally centered within the roomwith the 4' direction parallel to the roomlength inrectangular rooms.4. For Surface and Suspended Commercial Fixtures:End wall to first fixture: 1' to 4' maximumSide wall to first fixture: 1' to 2' preferable5. For Fluorescent Industrial Fixtures: (see Fig. A)a. Clean areas with difficult seeing tasks, use same type layout as in (2) for commercial fixtures.b. General industrial area, side walls and end walls are of less importanceuse one half ofspacing of rows at walls.c. Spacing of fixtures in continuous rows:6. For H.I.D. Industrial Fixtures: (see Fig. A)a. Often a layout can be developed for a single bay which can be repeated through the entirearea.b. Determine the location of floor or roof joists, which are useful structural elements for supporting the HID Industrial fixtures, and wiring. For example, whenlighting a plant with 40'x40' bays and joists on 5' center, you could use 400W HPS fixtures on 20' centers, and the joists will provide support for all fixtures.Area per FixtureLength of FixtureArea/ Fixture Value= ft.(center line to center line)Industrial HIDMounting Height Fluorescent HPS MH Fixture50w LLB9-15 Ft. F40T12-F96T12/ HO 70w 70w LLB100w 100w LLB150w 150w LLB, HB11-18 Ft. F96T12-F96T12/ HO 175w LLB, HB LB, HB15-20 Ft. F96T12-F96T12/ HO 200w LLB, LB, HB 250w LLB, LB15-25 Ft. F96T12-F96T12/ VHO 250w 250w LB, HB 400w LB, HB18-25 Ft. 310w 400w LB, HB18-30 Ft. 400w 400w LB, HB30-50 Ft. 1000w 1000w HBLLB=Little Low Bay LB=Low Bay HB=High BayHIDIncandescent4 Ft.FluorescentContinuos RowGroups (Partial Rows) 8Ft. Fluorescent2Ft.10Ft.2Ft.10Ft. 10Ft.Figure ARECOMMENDED MOUNTING HEIGHTS FOR INDOOR INDUSTRIAL LIGHTING FIXTURESTI-51050Visit our web site at www.daybritelighting.comor www.nitebrites.com776 South Green Street Tupelo, MS 38804 Phone: 662-842-7212 Fax: 662-841-5501189 Bullock Drive Markham, Ontario Canada L3P 1W4 Phone: 905-294-9570 Fax: 905-294-8911Day-Brite Lighting reserves the right to make changes without notice. September 2001. DL2.5M0901Genlyte Thomas Group, LLC INDOOR APPLICATIONSHI/ LO ELECTRO-CONNECT WAREHOUSE LAYOUTHI/ LO DIP SWITCHES94'50'28'(typical)15'(typical)94'50'15'(typical)20' (typical)BASKETBALL INDOOR (16) LUMINAIRESAverage MaintainedFootcandle LevelLamp High Bay Low BayMH 250 27 fc 24 fcMH 400 51 fc 45 fcBILL OF MATERIALItem Desc. Qty. Cat. No. SymbolDistribution Cable Two Cir. 7 LD-27-2E-23Lighting Cable Two Cir. 35 LC-27-2E-38Dust Cover 7-70173-001Fixtures Requiring Electro-ConnectItem Symbol Qty. Cat. No. Wiring Inst.HLA n/ a 42 HLA-27-CA-03 Factory Inst.Adapter 14 LA-27-CA-09 Field Inst.HBO400M27-HL-A16423838 38 38 3838 38 38 38 3838 38 38 38 3838 38 38 3838 38 38 38 3838 38 3838 38 38 38 387C6C5C4C3C2C1C38237C13J38236CJ235CJ38234CJ233CJ38232CJ38 38 38231CJ22LP8 1820161284141062NEX99999999999999QN7C6C5C4C3C2C1CA QA Q247C 6C 5C 4C 3C 2C 1C12345678910ON12345678910ON12345678910ON12345678910ON12345678910ON1234567891010ON123456789ON2338Note: Electrical contractor to verify all panelboard locationsand circuit numbers(typical).BASKETBALL INDOOR (20) LUMINAIRESAverage MaintainedFootcandle LevelLamp High Bay Low BayMH 250 33 fc 28 fcMH 400 65 fc 58 fc)ADDRESS TABLESettingsAisle No. On Off1C 1, 2 3, 4, 5, 6, 7, 8, 9, 102C 1, 3 2, 4, 5, 6, 7, 8, 9, 103C 1, 4 2, 3, 5, 6, 7, 8, 9, 104C 2, 3 1, 4, 5, 6, 7, 8, 9, 105C 2, 4 1, 3, 5, 6, 7, 8, 9, 106C 3, 4 1, 2, 5, 6, 7, 8, 9, 107C 1, 5 2, 3, 4, 6, 7, 8, 9, 10BASKETBALL25 FT. MOUNTING HEIGHT