In 1912, Hermann Schürch published what could be considered Gantt charts while discussing a construction project. Adamiecki, however, published his chart only in Russian and Polish which limited both its adoption and recognition of his authorship. The first known tool of this type was developed in 1896 by Karol Adamiecki, who called it a harmonogram. History Īlthough widely used in project planning in the present day, Gantt charts were considered revolutionary when introduced.

This method maximizes the float time available for all tasks.

Gantt charts are usually created initially using an early start time approach, where each task is scheduled to start immediately when its prerequisites are complete. Gantt charts are sometimes equated with bar charts. Gantt charts can be used to show current schedule status using percent-complete shadings and a vertical 'TODAY' line.

Modern Gantt charts also show the dependency (i.e., precedence network) relationships between activities. Terminal elements and summary elements constitute the work breakdown structure of the project. Gantt charts illustrate the start and finish dates of the terminal elements and summary elements of a project. The width of the horizontal bars in the graph shows the duration of each activity. This chart lists the tasks to be performed on the vertical axis, and time intervals on the horizontal axis. Modern Gantt charts also show the dependency relationships between activities and the current schedule status.Ī Gantt chart is a type of bar chart that illustrates a project schedule. A Gantt chart is a type of bar chart that illustrates a project schedule, named after its popularizer, Henry Gantt (1861–1919), who designed such a chart around the years 1910–1915.

Free gantt chart maker for students