The Driving Relationship is determined based on the Relationship Free Float and the business rules for Driving Relationships. Relationship Free Float Relationship Free Float (Rel FF): The Free Float on the relationship. Calculated as Successor Early Start (assuming a Finish to Start relationship) - Relationship Early Finish on the predecessors' calendar. This field is computed... Continue Reading →

In Primavera P6, when we use "longest path" option to determine the critical path, the process to determine the longest path is as follows: The longest path activities are determined by reviewing the schedule backwards (starting from the last activity) through the driving relationships; If the relationship between two activities is driving, then both activities... Continue Reading →

In Primavera P6, there are two important values: Total Float and Free Float. So what are the differences between them? Total Float: is the amount of time an activity can be delayed without delaying the Project Finish Date.Free Float: is the amount of time an activity can be delayed without delaying its Successor Activity Finish Date.... Continue Reading →