Today I received yet another progress claim to review, where the planner has incorrectly used the Activity % Complete field as part of the claim. Most novice users of Primavera P6 do not understand how Activity % Complete is calculated and more often than not, incorrectly calculate their cost claims on the basis of duration achieved.

The guys over at Ten Six put this article together that explains the calculation.

In P6, a user stipulates an activity's "% complete type". It is this setting that enables Primavera to calculate Activity % Complete based on one of 3 methods:

  • Duration
  • Physical
  • Units

Duration % Complete - calculates progress from planned and remaining duration values. This option is best applied to "level of effort (Loe) type tasks.

Physical % Complete - best used to represent the amount of scope physically achieved. This value is entered manually by the user.

Units % Complete - used when inputting actual units at the resource level. This should be used when progress is measured by discrete delivery items or a direct material take off is applied to a task.

It is important to use the correct Percent Complete Method when using the project schedule as the basis of cost claims to avoid delays in progressing a cost claim.

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