Duration.
This is the number of work periods, excluding holidays or other nonworking periods, required to complete an activity or other project element. Duration is usually expressed in work days or work weeks. There are two types of duration: contiguous (work time that is not interrupted) and interruptible (work time that might be interrupted). Duration is determined by first establishing the estimated effort required for a task, then dividing by a utilization factor (for example, 80%).
Estimating Terms
The following terms are used in estimating and productivity measurement.
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