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Primavera P6 Critical Analysis

6 replies [Last post]
Rhys Parry
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Joined: 13 Sep 2011
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Hello

I have a plan in P6 version 2 and after updating activity % and my Expense % Complete to match then schdulling it the end date for the enture project plan went from for example 12 october to 12 november.

I don't know why this has slipped so much as I was thinking it could be to do with some of the Level of Effort activities I have.

Any Ideas guys (can I do a timeline of events to see why the dates have changed so much)

Thanks

Replies

Ibrahim Kolawole ...
User offline. Last seen 8 years 5 days ago. Offline
Joined: 10 Nov 2009
Posts: 3

You can check out on your relationships with the activities therein, may be there is an activity pulling the other activity.

You can also find out about your schedulling because as soon as you hit F9, it will push all activities to scheduled time.

Rafael Davila
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Joined: 1 Mar 2004
Posts: 4784

Check for any out-of-sequence (OOS) event and correct logic if necessary. Wrong logic can result from both, retained logic as well as from progress override. Retained logic keeps the precedence sequence at the expense of the remaining duration to happen 100% after the predecessor finish. If the predecessor finish is way into the future then remaining duration will start way into the future and if remaining duration is large then the activity finish will be finished way into the future + large remaining duration.

Out of sequence is not that common but do happens, eventually you will have to deal with it in the few occasions it happens. Get used to check for OOS after every update.

Rhys Parry
User offline. Last seen 6 years 47 weeks ago. Offline
Joined: 13 Sep 2011
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Right ok

I will do this and hopefully that should sort a few things out

Thanks again Gary

Gary Whitehead
User offline. Last seen 19 weeks 1 day ago. Offline

With the project open, go to View > Filters

There should be a default filter called "Critical". -Check that box and hit "apply"

If you can't find the default filter, you can create a new one by hitting the "new" box, then making there rule "where Total float is less than or equals 0"

Rhys Parry
User offline. Last seen 6 years 47 weeks ago. Offline
Joined: 13 Sep 2011
Posts: 28
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I did maintain my baselines from the previuos month yes and as I have a PDF copy of the other month i can see what dates have changed.

How am I able to look at the critical path which will show what activities are driving the end date?

Is it a filter or something on the layouts of activities.

Thanks for your help

Gary Whitehead
User offline. Last seen 19 weeks 1 day ago. Offline

Do you have a copy of the programme from before you updated it? If so, you can set this as the baseline for the updated project, and track the variance in dates between each activity before and after updating

 

You cna of course also just look at the critical path of the project -this will tell you which activities are driving the end date.

 

If the project has slipped by a month after you have completed a monthly update, this suggests that one or more activities which were critical last month made no progress at all/ -That or they were mistakenly omited from the progressing.