Estimating Durations

MS Project makes calculation based on the following formula:

DURATION = WORK / ASSIGNMENT UNITS

So, if a resource can complete a task by working for 8hrs. full time, i.e. 100% on a task its duration is 8 hrs. If the resource works only half day, i.e . 50%, the task duration becomes 16 hrs.

We can fix any one parameter for the project while scheduling:

• Fixed Duration
• Fixed Work
• Fixed Units

When one parameter is fixed and we enter or change another, the third gets calculated automatically.

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