Task Estimation Types

While creating project schedule, project managers need to consider whether a given task will

  • Require certain duration irrespective of number of resources or
  • Require certain number of efforts (hrs) irrespective of duration of task
  • Requires certain duration as well as certain efforts


ZilicusPM enables project planners to have task estimation type as “Fixed Duration and Fixed Work”, beside ‘Fixed Duration’ and ‘Fixed Work’ types of task estimation.


Figure 4: Task Estimation Type

 

Please refer to following table to understand what factor will decide as you change project schedule, add/remove resources, change efforts for a given task estimation type. Remember the equation that will always hold true is

Duration x Resource Units = Efforts

 

Estimation Type

When You Change Duration, what
changes?

When you change % allocation
what changes?

When you change work, what
changes?

When you add a resource, what
changes?

Fixed Duration  

work

work

% allocation

work

Fixed work

% allocation

Duration

Duration

Duration

Fixed Duration and work

% allocation

work

% allocation

% allocation