June 13, 2017 at 10:32 am #27278SHAH AMANULLAH KHANParticipant
PLEASE EXPLAIN ABOUT EACH CONSTRAINT TYPE AND HOW TO UPDATE THEM WHILE TRACKING PROGRESS, LINK BETWEEN CONSTRAINTS AND DATA DATE WHICH SEEMS VERY MUCH CONFUSING.
June 17, 2017 at 8:35 pm #27428
This is a good question. Let us discuss the concept of constraints in Primavera and how it work.
Mainly we have two types of constraints, start/finish on and Mandatory start/finish.
Now, both constraints will force your activity/milestone to start/finish in certain date, but what will happen if your schedule logic after update wants to change the constraints date?
Start/Finish on constraints will cause negative flow and will not shift the planned dates based on your update.
Mandatory Start/Finish will wipe out negative float on their assigned activity, and will move the activities in violation of their calculated dates.
If you have Start/Finish ON constraints and your data date exceeded this date, your project finish date will remain the same but with negative float.
If you have Mandatory Start/Finish constraints and your data date exceeded this date, your project finish date will move and there will be no negative float.
I hope my answer was clear for you, please let me know if you need any further explanation.
June 18, 2017 at 12:45 pm #27437
December 29, 2017 at 4:17 am #30875Lima JParticipant
i have imported a MSP file with 500 activities, many of the activities have Primary constrain ” Start On or After”. how can i remove all the constrains by global change.
December 30, 2017 at 1:10 pm #30882
That is good question. Here is the answer in 3 simple steps:
1- Show the primary constraint column in your schedule
2- Select first one as none.
3- select last one then click CTRL and select first one and right click and click on fill down.
See attached photos for reference.
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