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EVMS and P3

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Abbas ShakourifarMember for 20 years 3 months
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We are trying to use Earn Value Management System and P3 in parallel. How could be able to use “Estimated time to completion (ETC)" calculated by EVMS in P3? ETC is based on the "Scheduled Performance Index (PSI)" another EVMS definition. Is there any solution to help us using P3 to forecast based on the PSI and ETC?
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  1. 0
    Praves Suppa ·
    #1
    Hello,

    If we are agreed for the relation of 3 variables is

    BCWP = SPI x (BQ - ETC)

    in my assumption that BCWS = BQ
    ACWP = BCWS - ETC

    So you have all these 3 variable in P3 Calculation.

    Sorry if this comment cannot fulfill your query.

    BR.
    Praves
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  2. 0
    Abbas Shakourifar ·
    #2
    SPI= (BCWP)/(BCWS) or for each activity (Plan Value) / (Earned Value) or Plan/Actual
    in Earned Value Management System :
    ETC= ATE/ %C or
    ETC= ATE + (OD-ATE*SPI)/SPI or
    ETC= OD/SPI

    But in P3 Calculations:
    ETC = ATE + (1-%C)*OD

    SPI: Schedule Performance Index
    BCWP: Budgeted Cost of Work Performed
    BCWS: Budgeted Cost of Work Scheduled
    ATE: Actual Time Expended
    %C: % Complete
    OD: Original Duration
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  3. 0
    Muhammad Iqbal ·
    #3
    HELLO ABAS

    THIS SIMPLE EVM FORMULA WILL NOT HELP YOU IN FORECASTING THE COMPLETION DATE OF ANY TASK OR WHOLE PROJECT.

    P3 FINISH DATE WILL BE ONLY REALISTIC WHEN MOST OF THE LOGIC ARE F-S AND THE PHYSICAL WORK IS GOING AS PER PLAN I MEAN NO OUT OF SCUENCE WORK

    SO THERE IS ONLY WAY OUT IS PERFORMANCE BASE ANALYSIS
    THIS IS SIMILAER TO EVMA BUT ONE STEP MORE

    WE ARE VERY SUCCESSFULLY USUING IT IN OUR PROJECTS

    AND I HAVE ALSO USED IT IN DUBAI POWER PROJECT IT WORKS WELL

    FOR FURTHER INFO

    braintask@yahoo.com

    IQBAL


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