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In Depth Information
duration of Task A, resource assignment units shrink in response. If you
reduce the time to complete Task A, resource assignments increase to
complete the unchanged amount of work hours in less time.
A fixed-duration task does not vary its length, no matter what resource
assignments you make.
With a fixed-duration task, Task A will take four days. If you assign additional
resources or remove resources, the task still takes four days, but the
resourceassignment units will change.
Figure 9-1 shows the same task with the three different types specified. Each
task was created with a four-day duration and one resource at 100 percent.
Then an additional resource was added at 100 percent. Note the resulting
change — or lack of change — with each type. The fixed-duration task didn’t
change duration but did reduce resource assignments. The fixed-units task kept
resource assignments constant at 100 percent — but reduced the task duration.
Fixed work was accomplished faster, and the work (32 hours) stayed constant.
When effort is in the driver’s seat
Project’s complex calculation of work, task duration, and assignment units
involves not only task types but also the effort-driven setting. (In Figure 9-1,
the effort-driven setting is active for all tasks.)
Figure 9-1:
Select the
task type
that reflects
what is
variable on
your task.
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