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How to calculate schedule slippage?

6 replies [Last post]
Wed, 2012-02-08 23:00
Amir Pezeshk
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Hi, One of the majore reports in Primavera is to calculate the slippage of The schedule. Can anyone help me to figure out this? Thanks
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Replies

Fri, 2012-02-10 05:34
#1
Daniel Limson
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Amir,

Change your your Unit Time to Day. Under User Preferences select Times Unit and select Day.

Let me know if it works.

Regards,

Daniel

 

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Thu, 2012-02-09 17:29
#2
Amir Pezeshk
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Hi, I really appreciate your comments. I tried your instructions and I'm stilling facing a problem. The problem is that the Variance columns that are available to me is calculating the slippage by week not by days.
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Thu, 2012-02-09 09:07
#3
D Artagnan
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1) Add a baseline.

2) Add columns (BL Start, BL Finish, Current Start, Current Finish), Variance (Start-BL Start), Variance (Finish-BL Finish)

3) The two last columns would give you the slippage.

 

Hope it helps.

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Thu, 2012-02-09 07:32
#4
Daniel Limson
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Hi Amir,

In adiidtion to Mike's comments, You need to monitor progress on site and and update your programme accordingly (be honest when updating your programme otherwise you will not get the true picture), then you can compare the baseline and current programme by setting-up a variance column on scheduled dates. However, the real slippage you should focus or pay attention to is on the critical path or the longest path to the completion date or any key date that has an LD (liquidated damages) attached to it. Note that the critical path may change as you progressed and it is always a good practice to perform Critical Path Analysis (CPA) everytime you update the programme.

Best regards,

Daniel

 

 

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Thu, 2012-02-09 07:18
#5
Amir Pezeshk
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Yes, but I would like to learn to do it through p6.i know that I have to set up a filter to get the report. But I don't know how? Perhaps I should go with this formula... Slippage=Early start - baseline date must be greater than or equal to zero Does this sound right?
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Thu, 2012-02-09 05:53
#6
Mike Testro
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Hi Amit

You don't need to rely on a computer generated report.

Set up a baseline on your original programme and look to see where the progressed dates are different.

If you rely completely on the software to give you reports you will lose touch wth what is really happening with your programme.

That is one of the differences between a scheduler and a planner.

Best regards

Mike Testro

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