lec 6 a capacity planning

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  • 8/12/2019 Lec 6 a Capacity Planning

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    a ery xamp ea ery xamp e

    Actual production last week =Actual production last week = 148,000148,000 rollsrolls==Design capacity =Design capacity = 1,2001,200 rolls per hourrolls per hourBakery operatesBakery operates 77 days/week,days/week, 33 -- 88 hour shiftshour shifts

    = == =

    2008 Prentice Hall, Inc. S7 1

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    a ery xamp ea ery xamp e

    Actual production last week =Actual production last week = 148,000148,000 rollsrolls==Design capacity =Design capacity = 1,2001,200 rolls per hourrolls per hourBakery operatesBakery operates 77 days/week,days/week, 33 -- 88 hour shiftshour shifts

    = == =

    2008 Prentice Hall, Inc. S7 2

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    a ery xamp ea ery xamp e

    Actual production last week =Actual production last week = 148,000148,000 rollsrolls==Design capacity =Design capacity = 1,2001,200 rolls per hourrolls per hourBakery operatesBakery operates 77 days/week,days/week, 33 -- 88 hour shiftshour shifts

    = == =

    UtilizationUtilization = 148,000/201,600 = 73.4%= 148,000/201,600 = 73.4%

    2008 Prentice Hall, Inc. S7 3

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    a ery xamp ea ery xamp e

    Actual production last week =Actual production last week = 148,000148,000 rollsrolls==Design capacity =Design capacity = 1,2001,200 rolls per hourrolls per hourBakery operatesBakery operates 77 days/week,days/week, 33 -- 88 hour shiftshour shifts

    = == =

    UtilizationUtilization = 148,000/201,600 = 73.4%= 148,000/201,600 = 73.4%

    2008 Prentice Hall, Inc. S7 4

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    a ery xamp ea ery xamp e

    Actual production last week =Actual production last week = 148,000148,000 rollsrolls==Design capacity =Design capacity = 1,2001,200 rolls per hourrolls per hourBakery operatesBakery operates 77 days/week,days/week, 33 -- 88 hour shiftshour shifts

    = == =

    UtilizationUtilization = 148,000/201,600 = 73.4%= 148,000/201,600 = 73.4%

    EfficiencyEfficiency = 148,000/175,000 = 84.6%= 148,000/175,000 = 84.6%

    2008 Prentice Hall, Inc. S7 5

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    a ery xamp ea ery xamp e

    Actual production last week =Actual production last week = 148,000148,000 rollsrolls==Design capacity =Design capacity = 1,2001,200 rolls per hourrolls per hourBakery operatesBakery operates 77 days/week,days/week, 33 -- 88 hour shiftshour shifts

    = == =

    UtilizationUtilization = 148,000/201,600 = 73.4%= 148,000/201,600 = 73.4%

    EfficiencyEfficiency = 148,000/175,000 = 84.6%= 148,000/175,000 = 84.6%

    2008 Prentice Hall, Inc. S7 6

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    a ery xamp ea ery xamp e

    Actual production last week =Actual production last week = 148,000148,000 rollsrolls==Design capacity =Design capacity = 1,2001,200 rolls per hourrolls per hourBakery operatesBakery operates 77 days/week,days/week, 33 -- 88 hour shiftshour shifts

    c encyc ency = .= .Efficiency of new lineEfficiency of new line = 75%= 75%

    Expected Output =Expected Output = ((Effective CapacityEffective Capacity)()(EfficiencyEfficiency))

    = , . = ,= , . = , ro sro s

    2008 Prentice Hall, Inc. S7 7

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    a ery xamp ea ery xamp e

    Actual production last week =Actual production last week = 148,000148,000 rollsrolls==Design capacity =Design capacity = 1,2001,200 rolls per hourrolls per hourBakery operatesBakery operates 77 days/week,days/week, 33 -- 88 hour shiftshour shifts

    c encyc ency = .= .Efficiency of new lineEfficiency of new line = 75%= 75%

    Expected Output =Expected Output = ((Effective CapacityEffective Capacity)()(EfficiencyEfficiency))

    = , . = ,= , . = , ro sro s

    2008 Prentice Hall, Inc. S7 8

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    Diseconomies of ScaleDiseconomies of Scale

    ht)

    ht)

    2525 -- roomroom 7575 -- roomroomtcost

    tcost

    perni

    perni

    5050 -- roomroomroadside motelroadside motel

    ageuni

    ageuni

    rroo

    rroo

    Aver

    Aver

    ll

    arsp

    ll

    arsp

    EconomiesEconomiesof scaleof scale

    DiseconomiesDiseconomiesof scaleof scale

    2525 5050 7575

    (d(d

    2008 Prentice Hall, Inc. S7 9

    Number of RoomsNumber of Rooms Figure S7.2Figure S7.2

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    Management in the Service SectorManagement in the Service Sector

    Demand managementDemand management Appointment, reservations, FCFS ruleAppointment, reservations, FCFS rule

    apac yapac ymanagementmanagement

    Full t ime,Full t ime,

    temporary,temporary,partpart--timetimestaffstaff

    2008 Prentice Hall, Inc. S7 10

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    rearea -- ven na ys sven na ys sBEPBEPxx == breakbreak--even point ineven point in

    unitsunits

    BEPBEP$$ == breakbreak--even point ineven point in

    xx == number of unitsnumber of unitsproducedproduced

    TRTR == total revenue = Pxtotal revenue = Pxo arso ars

    PP == price per unit (afterprice per unit (afterall discounts)all discounts)

    FF == fixed costsfixed costs

    VV == variable cost per unitvariable cost per unit

    TCTC == total costs = F + Vxtotal costs = F + Vx

    BreakBreak--even pointeven pointoccurs whenoccurs when

    TR = TCTR = TC == FForor

    Px = F + VxPx = F + Vx

    xx PP -- VV

    2008 Prentice Hall, Inc. S7 13

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    rearea -- ven na ys sven na ys sBEPBEPxx == breakbreak--even point ineven point in

    unitsunits

    BEPBEP$$ == breakbreak--even point ineven point in

    xx == number of unitsnumber of unitsproducedproduced

    TRTR == total revenue = Pxtotal revenue = Pxo arso ars

    PP == price per unit (afterprice per unit (afterall discounts)all discounts)

    FF == fixed costsfixed costs

    VV == variable cost per unitvariable cost per unit

    TCTC == total costs = F + Vxtotal costs = F + Vx

    BEPBEP$$ = BEP= BEPxx PPFF == --==

    FF

    PP -- VV

    = Px= Px -- ((F + VxF + Vx))

    ((PP -- VV))/P/PFF

    = x= x -- -- xx

    == ((PP -- VV))xx -- FF

    2008 Prentice Hall, Inc. S7 14

    11 -- V/PV/P

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    rearea -- ven xamp even xamp e

    Fixed costsFixed costs = $10,000= $10,000 MaterialMaterial = $.75= $.75/unit/unit== ==

    FF $10,000$10,000$$

    11 -- ((V/PV/P)) 11 -- [(1.50 + .75)/(4.00)][(1.50 + .75)/(4.00)]

    = = 22,857.14= = 22,857.14.4375.4375

    BEPBEPxx = = = 5,714= = = 5,714FF

    PP -- VV

    $10,000$10,0004.004.00 -- (1.50 + .75)(1.50 + .75)

    2008 Prentice Hall, Inc. S7 16

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    rearea -- ven xamp even xamp e

    Multiproduct CaseMultiproduct Case

    BEPBEP$$ ==FF

    VV-- xx

    iiPPii

    wherewhere VV = variable cost per unit= variable cost per unit

    PP = price per unit= price per unit= xe cos s= xe cos s

    WW = percent each product is of total dollar sales= percent each product is of total dollar sales

    ii = each product= each product

    2008 Prentice Hall, Inc. S7 17

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    u pro uc xamp eu pro uc xamp e

    Annual ForecastedAnnual Forecasted

    Fixed costsFixed costs = $3,500= $3,500 per monthper month

    temtem r cer ce ostost a es n tsa es n ts

    SandwichSandwich $2.95$2.95 $1.25$1.25 7,0007,000

    Soft drinkSoft drink .80.80 .30.30 7 0007 000

    Baked potatoBaked potato 1.551.55 .47.47 5,0005,000TeaTea .75.75 .25.25 5,0005,000

    2008 Prentice Hall, Inc. S7 18

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