HomeTroubleshooting@RISK with ProjectsSummary Task Doesn't Sum the Durations of Subtasks

6.10. Summary Task Doesn't Sum the Durations of Subtasks

Applies to:
@RISK 6.x/7.x, Pprofessional and Industrial Editions
@RISK for project 4.x

The duration of my summary task doesn't equal the total of the subtask durations. What is wrong?

The summary task doesn't just add up the durations of the subtasks. Rather, the duration of the summary task is the time interval from the start of the earliest subtask to the finish of the latest subtask. This is usually less than the total of the subtask durations, because typically the schedule lets some tasks can be worked on at the same time.

See also: Finish Date Unexpectedly Skewed.

Last edited: 2015-12-24

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