What are Gantt Charts in Projectal?

Modified on Mon, 19 Sep 2022 at 06:52 PM

Gantt charts are a popular project management tools used across all industries.  They illustrate a project plan so they you can quickly understand all aspects of a project.   

Gantt charts typically have two sections:

  • The left side outlines a list of tasks.
  • The right side has a timeline with schedule bars that visualize work. 

Gantt charts are a great way to track the start and finish dates of tasks, milestones, predecessors (or dependencies between tasks), assigned staff, assigned resources and more.

Visual Timeline

The visual timeline on the right side of a Gantt screen shows all tasks across a date range that you can specify - such as Project Schedule, This Year, Last Month, Next 4 Weeks and more.  You can zoom in or out of the timeline by viewing by day, week month or year.  All summary tasks, tasks and milestones are color coded for easy identification. 

Interactive Access

The visual timeline is fully interactive and allows you to:

  • Edit tasks
  • Move tasks
  • Set progress for tasks
  • Create predecessor links between tasks
  • Edit predecessor links between tasks

Critical Path

The Gantt screen lets you quickly see the critical path in a set of tasks.  The critical path are the set of tasks that are impacting the most on the schedule to in order complete the set of tasks.  The Gantt screen will show the set of tasks that are marked as critical with a red color.

Free Float

Free float (or slack) is the amount of time a task can take before it starts impacting other tasks in the set of tasks.  The Gantt screen will show you the amount of free float for each task using diagonal hatching on the right side of the tasks.


Predecessors are the dependencies between tasks starting or finishing.  They help you organize and schedule your tasks so they are completed in the correct sequence.  You can create and edit your task predecessors directly on the Gantt screen.

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