Understanding the calculated duration time

Duration of an activity is the overall time it takes to execute its direct children. If all the children are parallel, it is the length of the longest child. Calculated duration of upper levels is based on the calculated duration of lower levels. If the lower level has no children (for example, activities with no subactivities), its calculated duration is equal to its duration.

• For an operation that has only one level of activities below it, the calculated duration is the length of the longest path of activities. If the activities have start times associated with them, the calculated duration is the overall time it takes to execute the activities taking the start times into consideration.

• For an activity with subactivities, Teamcenter first calculates the calculated duration of each subactivity, and then calculates the longest duration of the activities based on the calculated duration time of the subactivities.

If there are, for example, four activities with the same parent, having duration times of one second, two seconds, three seconds, and four seconds, the calculated time for the parent activity is four seconds. If, however, the second activity must be completed before the third, the calculated duration time is five seconds for the parent process.

Use the Show calc duration button to show or hide the calculated duration time. Teamcenter shows a bar across the top of each activity displaying the calculated duration path of the children of this activity.