Estimate work schedule and scheduling constraints

Once you create the basic milestone and task structure of the project, you can estimate the time it will take to complete the overall project by defining task constraints and durations.

Consider the following:

  • Task constraints define when work on a task must begin or end.

    For information about defining task constraints, see the article Task Constraint overview.

  • The Duration of a task is the timeframe available to complete a task. When estimating Duration, you may want to enter a value that takes into account the possibility of a delay. If similar projects have been completed in the past, you may have a good idea where to set this value.

    As duration is an estimate, be sure to set optimistic time values to account for factors that might affect the task, such as weather, power outages, supplier difficulties, or other unforeseen events. In addition, be sure to consider whether there are any associated predecessor or dependency tasks and how they may place constraints on work and affect task completion.

    Depending on the Duration Type of the task, you can modify the duration of a task during the lifetime of a project, but this will also affect the timeline of the project. For information about the Duration of a task, see the article Overview of Task Duration and Duration Type .