Earned schedule: principles and practice - Association for Project ...

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Benefits of using Earned Schedule (2)• ES can be applied to any level of the WBS, to include taskgroupings such as the Critical Path– Requires creating PMB for the area of interest– EV for the area of interest is used to determine its ES• Enables comparison of forecasts, total project duration (TP)to Critical Path (CP) duration– Desired result: forecasts are equal– When TP forecast > CP forecast, CP has changed– When CP > TP, possibility of future problems
Benefits of using Earned Schedule (3)• Earned Schedule works!• How do we know?• Evidence from a number of projects• IEAC(t) & SPI(t) studies by K. Henderson, Dr.Vanhoucke & S. Vandevoorde (2003 – present)– Henderson & Vandevoorde validated ES concept with real data– Using simulation Vanhoucke & Vandevoorde showed ES to be abetter schedule predictor than other EVM-based methods• “The results ..confirm ..that the ES method outperforms, on average,the other forecasting methods” - Vanhoucke & Vandevoorde• Takes Earned Value Management into a new dimension
Page 2 and 3: Introduction• What is Earned Sche
Page 4 and 5: Playing Devil‟s Advocate (2)• I
Page 6 and 7: Earned Schedule - a brief history
Page 10 and 11: Why use Earned Schedule?• Schedul
Page 12 and 13: Earned Schedule Calculation• ES (
Page 14 and 15: Calculating the Increment IPV CPV C
Page 16 and 17: 180>105Hence number ofperiods =1Cal
Page 18 and 19: Money (£)SV (t) monthsVariances -
Page 20 and 21: To Complete Performance Index (time
Page 22 and 23: Milestone tracking - ES and PM‟s
Page 24 and 25: Potential rework?Schedule Adherence
Page 26 and 27: Earned Schedule research work…
Page 28: Available Resources• PMI-Sydney h

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