calendar in P6
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I’m supposed to have 180days duration for my earthworks, using 7 working days the total should be 180 days only, but the summary shows 192 days, i tried to create 1 activity only and put 180 days on that activity,on the 12 days it shows 12days in the summary, but on the 13th it shows 14 and so on, so in the 180 days it shows 192days, why? can somebody explain it to me please!!!!(i’m talking about calendar in P6)
Thank you very much.
6 replies
Oldest first- 0David Johnstone ·The "problem" may be that you are chosing to show the durations in Days. P6 time periods are in Hours, and when you ask P6 to "roll-up" data, it uses either the Admin Settings, or the User Preferences. (see Edit, User Preferences). it is here where you "define" what you want a Day to be. Is it 8hrs, 10hrs, 24hrs etc. The problem with P6 (unless you are using P6.7) is that it only allows the user to set what a day represents for ALL activities, regardless of how many hours are on the activities Calendar.
P6 is useless when you are using Multiple Calendars, and have the need to show Durations in time periods other than Hours. This has been a basic fault for over 9 years since P3e was released. P6.7 can "fix" this problem with individual Calendar settings.
Oh, don’t rely on Group Totals summarising the Date or TF values correctly for you either. It get’s those wrong too.
Welcome to one of the most "challenging" scheduling software ever released. It is NOT for the faint hearted, and could very easily get you into trouble.
Check out a book by Paul E Harris titled Project Planning and Control Using Primavera P6. It may provide you with a few ideas on how to "work around" P6 "problems..."
Have fun!!! - 0Nigel Winkley ·The Summary totals are based upon the default calendar setting. So if your project default is 5 day week that is what is used for the summary duration regardless of individual activity calendars.
Causes all sort of problems and the only fix I have found is not to show the durations! (self-defeating I know) - 0Gerondio Panong ·
Guys Oracle is a big racket.
Guys Oracle is a big racket. Gone are the days when P3 rain supreme. They have just down graded it to P6, P7 & P8. These are flawed software very restrictive you can't even print a proper report. I wish the companies realizes this and switch to other better programming softwares.
- 0Amit Parmar (PMP) ·
Hi Rick,The solution to your
Hi Rick,
The solution to your problem is simple. Please check if the Default calendar is same as your activities calendar. The durations in the summary bar are calculated using the Default calendar. If they are different then make the Default calendar same as project calendar and the durations will become equal.
Regards
Amit
Check out my blog on Primavera at http://www.primaverablog.in
- 0Rafael Davila ·
Are all your calendars based
Are all your calendars based on days working an average of 8hrs/day or do you have different work hours per day in some of your calendars?
Maybe summary bars workdays are estimated using an 8 hours average work day [or whatever you set on your options for the conversion from hours to days] while individual bars use their own average weekly hours per day to compute their duration in days.
Check the work hours for each day on your 7 days calendar, 8-8-8-8-8-10-10 = 60 hours per week [note different hours per day on my assumed workweek], 8.57 hours/day
8.57 x 180 = 1,542 hours
Then "average workdays" using an 8 hours average day;
1,542 hours / 8 hours/day [instead of 8.57] = 192 days
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