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EVMS and P3

3 replies [Last post]
Sun, 2006-07-16 09:33
Abbas Shakourifar
User offline. Last seen 2 years 26 weeks ago. Offline
Joined: 11 Jul 2006
Posts: 15
Groups: Petro-Chem / Oil & Gas
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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Replies

Wed, 2006-09-20 00:47
#1
MUHAMMAD IQBAL
User offline. Last seen 7 years 20 weeks ago. Offline
Joined: 29 Aug 2005
Posts: 34
Groups: Planning, Claims & Contracting, TILOS
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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Mon, 2006-07-17 08:41
#2
Abbas Shakourifar
User offline. Last seen 2 years 26 weeks ago. Offline
Joined: 11 Jul 2006
Posts: 15
Groups: Petro-Chem / Oil & Gas
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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Mon, 2006-07-17 05:56
#3
Praves Suppa
User offline. Last seen 8 weeks 5 days ago. Offline
Joined: 16 May 2006
Posts: 40
Groups: None
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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