What are the differences between GPM® and CPM terminology?

Answer

GPM and CPM share some similar concepts. However, some of these concepts are referenced by different terms in one framework vs. the other. Continue reading to view a table that highlights the different terms that are used for these common GPM and CPM concepts.

GPM CPM
The connection between a predecessor and a successor Link Logic Tie
The duration of a Link Gap N/A
The amount of time an Activity can be delayed before delaying the start of its nearest successor Buffer Free Float
The amount of time an Activity can be delayed before delaying the completion of the project Float* Total Float*
The amount of time an Activity can gain before advancing the finish of its nearest predecessor Drift Buffer N/A
The amount of time an Activity can gain before advancing the start of the project Drift* N/A
The amount of time an actualized Activity left of the data date could have been delayed before delaying the completion of the project Forensic Float N/A
The amount of time after the start of a predecessor and the start of its successor in a start-to-start relationship Offset from Start Lead
The amount of time after the finish of a predecessor and the finish of its successor in a finish-to-finish relationship Offset to Finish Lag

 

*Note: For any Activity, Drift + Float (GPM) is a constant and is equal to CPM Total Float