Primavera - Relationship between activity
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Hello Everyone,
Hope everyone is in good health.
A doubt. I have received comments on a schedule,
- The use of Finish-start relationship is prefered (FS). Avoid as much possibe use of Finish-Finish (FF) plus lags and start -start (SS) plus lags relationship between activities.
- FF relationship do not provide visiblity and clarity regarding schedule logics and drivers fr key activity.
Is the above statement right ?
Moreover in my schedule I have no open end activity, each activity will either have FF or FS or SS relationship with a lag. So would ac activity be considred "Opend End" if it the predecedosr/sucessor rlationship is having only FF or SS ?
Is only FS relation is considred as Closed end ?
Stay safe.
Thanks
Jithin
6 replies
Oldest first- 0Alexandre Faulx-Briole ·
Hello Jithin,absolutely, this
Hello Jithin,
absolutely, this statement is right, every paragraph in the statement is right;
to answer your second question: an activity is open-end when the activity has no successor, either FS or FF; lag or lead has nothing to do with that
Alexandre
- 0Alexandre Faulx-Briole ·
Hello Jithin,absolutely, this
Hello Jithin,
absolutely, this statement is right, every paragraph in the statement is right;
to answer your second question: an activity is open-end when the activity has no successor, either FS or FF; lag or lead has nothing to do with that
Alexandre
- 0Zoltan Palffy ·
technically a activity
technically a activity withonly a SS relationship would be open ended because you are only tying the start of it to something not the finsh of it.
so the solution would be make it a compound relationship and have both a SS and a FF to the same successor.
if you give me your email I can send you a pdf on why to use the compund relationsh and what can happen if you only use a SS relationship
- 0Rafael Davila ·
The risks of splitting
The risks of splitting activities that shall be executed continuously can be far more dangerous than pretending concurrent logic does not exists. This is specially true if your model is to apply resource constraints, it might spread apart the segments of an activity that shall be continuous. In such case use of SS(+lag) in combination to FF(+lag) relationships will make a better model.
Best Regards, Rafael
- 0Rafael Davila ·
Open end activities are
- Open end activities are activities with no predecessor to start node or with no successor to finish node.
- An activity might have predecessor and successors and still be open ended.
- Dangling Logic - TomsBlog
- The Problem with Dangling Activities
hoover images and click
I suggest creating filters for dangling activities.
Best Regards, Rafael
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