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
Member for
20 years 6 months
Member for20 years6 months
Submitted by Santosh Bhat on Thu, 2020-09-17 00:57
Sophia, this is a common technique to schedule activities that might happen in parallel, but where the second activitiy is delayed.
Think for example if yoare digging a long trench, do you wait for the entire trench to be finished, before you start laying pipe? or can you start laying a pipe say once the trench has moved along by a distance? and in the same way, you cannot finish laying the pipe until some time after the trenching is completed. so a SS/FF link to the same successory reflects this.
It might not pass the DCMA checklist, but in my opinion, that should not be a factor in determing whats realistic.
Member for
16 years 3 monthsthis is known as a compound
this is known as a compound relationship and is common.
if you only use a SS this could happen
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Member for
21 years 8 months(No subject)
Member for
21 years 8 monthsThe 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
Member for
20 years 6 monthsSophia, this is a common
Sophia, this is a common technique to schedule activities that might happen in parallel, but where the second activitiy is delayed.
Think for example if yoare digging a long trench, do you wait for the entire trench to be finished, before you start laying pipe? or can you start laying a pipe say once the trench has moved along by a distance? and in the same way, you cannot finish laying the pipe until some time after the trenching is completed. so a SS/FF link to the same successory reflects this.
It might not pass the DCMA checklist, but in my opinion, that should not be a factor in determing whats realistic.