gantt charts

Gantt chart

  • A Gantt chart is a type of bar chart that illustrates a project schedule. 
  • This chart lists the tasks to be performed on the vertical axis, and time intervals on the horizontal axis. 
  • The width of the horizontal bars in the graph shows the duration of each activity. 
  • Gantt charts illustrate the start and finish dates of the terminal elements and summary elements of a project. 
  • Terminal elements and summary elements constitute the work breakdown structure of the project.
  •  Modern Gantt charts also show the dependency relationships between activities. Gantt charts can be used to show current schedule status using percent-complete shadings and a vertical "TODAY" line.


Progress Gannt chart

  • In a progress Gantt chart, tasks are shaded in proportion to the degree of their completion: a task that is 60% complete would be 60% shaded, starting from the left.
  •  A vertical line is drawn at the time index when the progress Gantt chart is created, and this line can then be compared with shaded tasks.
  • If everything is on schedule, all task portions left of the line will be shaded, and all task portions right of the line will not be shaded.
  • This provides a visual representation of how the project and its tasks are ahead or behind schedule.

Linked Gannt chart

  • Linked Gantt charts contain lines indicating the dependencies between tasks. However, linked Gantt charts quickly become cluttered in all but the simplest cases
  • Critical path network diagrams are superior to visually communicate the relationships between tasks. Still, Gantt charts are often preferred over network diagrams because Gantt charts are easily interpreted without training, whereas critical path diagrams require training to interpret.

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