Precedence Relationship is always assigned to activities based on the dependencies of each activity.
There are four recognized precedence relationships:
- Finish-to-Start (FS)
- Finish-to-Finish (FF)
- Start-to-Start (SS)
- Start-to-Finish (SF)
What is Lag?
- is a delay in the start of a successor activity.
- is determined by a dependency.
What is Lead?
- is implemented when you need to accelerate a successor activity in order to shorten the overall project schedule.
- will vary in length depending on the acceleration required by the amended schedule.
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