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P6.1; WBS Total Original Duration Problem

7 replies [Last post]
Sun, 2010-05-09 08:34
Abeer Mahmoud
User offline. Last seen 7 years 44 weeks ago. Offline
Joined: 8 Jul 2008
Posts: 87
Groups: Civil Engineering
WBS title is Item #1 (included Activity #1 & 2)
1.Activity #1; Total Float =0 and original duration is (8days) start 04-May-10 (8:00) finish 12-May-10 (16:00)
2.Activity #2 will start after finish activity #1; Total Float = 33 and original duration is (1days) start 13-May-10 (8:00) finish 13-May-10 (16:00)

After run schedule I found the following:
WBS title is Item #1, Total Float = 27 instead of 33 and original duration is 8days instead of 9days start 04-May-10 (8:00) finish 13-May-10 (16:00)

I wonder why this conflict happened.

Please advise by steps.
Best Regards,
Abeer

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Replies

Mon, 2010-05-10 07:22
#1
A D
User offline. Last seen 3 years 23 weeks ago. Offline
Joined: 20 May 2007
Posts: 1027
Groups: Accreditation Editors
Some more links

http://primavera.zxlm.cn/kb/prim84057
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Mon, 2010-05-10 06:59
#2
A D
User offline. Last seen 3 years 23 weeks ago. Offline
Joined: 20 May 2007
Posts: 1027
Groups: Accreditation Editors
Hi Abeer,

From Rodel’s link, things might b very clear for u.

Here’s a workaround to overcome WBS bars problem:

- Set the rolled up totals OFF in Group and sort

- Add an LOE, OR

- Add WBS summary activity with the calendar you want to use for calculating the summary duration.

Cheers,
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Mon, 2010-05-10 06:47
#3
Rodel Marasigan
User offline. Last seen 10 hours 36 min ago. Offline
Joined: 25 Oct 2006
Posts: 1699
Groups: Petro-Chem / Oil & Gas
Abeer,

Click the link below where I explained the proper use of Multiple Calendar
Multiple calendar scheduling Post #3
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Mon, 2010-05-10 05:28
#4
Abeer Mahmoud
User offline. Last seen 7 years 44 weeks ago. Offline
Joined: 8 Jul 2008
Posts: 87
Groups: Civil Engineering
Thanks Raviraj,

You are right global calendar was 5 working days because most of rest WBS activities have the same working days and the mention below WBS activities is 6 working days.
But when I changed global calendar to 6 working days I found the following:
WBS title is Item #1, original duration was corrected to 9days instead of 8days
Other WBS’s sum durations increased from 1 to 3 days which is not correct for example WBS #2 included 2 activities with 5 working days;
-Activity #3; duration is (11days) start 06-May-10 (8:00) finish 20-May-10 (16:00)
-Activity #4 will start after finish activity #3; original duration is (1days) start 23-May-10 (8:00) finish 23-May-10 (16:00)
But WBS #2 sum duration = 15days instead of 12days.
So if I have many calendars at the same project what is the global calendar I must assign to make the schedule WBS’s sum durations is right and reasonable.
Regards,
Abeer
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Mon, 2010-05-10 04:45
#5
A D
User offline. Last seen 3 years 23 weeks ago. Offline
Joined: 20 May 2007
Posts: 1027
Groups: Accreditation Editors
Check Global Calendar

WBS total Duration is calculated using Global Calendar and NOT using activity calendar.

This is still a enhancement request.
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Mon, 2010-05-10 03:29
#6
Abeer Mahmoud
User offline. Last seen 7 years 44 weeks ago. Offline
Joined: 8 Jul 2008
Posts: 87
Groups: Civil Engineering
Dear Deepak,
Kindly note that the two activities have the same calendar,
So WBS total duration must be the sum of activities durations which = 9days not 8days

Regards,
Abeer
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Sun, 2010-05-09 19:22
#7
Deepak Jain
User offline. Last seen 10 years 7 weeks ago. Offline
Joined: 14 Jan 2006
Posts: 31
Groups: Petro-Chem / Oil & Gas
The WBS duration is not a sum of the durations but a calculation based on the start and finish activities on the default calendar.
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