Finish-to-finish activity dependency - activity A must be complete before activity B can be completed (from Wikipedia).

Finish-to-finish (FF) is one of the four possible logical relationships between activities in a schedule using the precedence diagramming method (PDM). In a finish-to-finish relationship the successor activity cannot finish until the predecessor does. The two tasks do not need to begin at the same time.


  • An example is that the road must be paved before the lines can be drawn.
  • The last chapter must be written before the book is completed.

Related: start-to-start, start-to-finish, finish-to-start

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