Gantt Charts

The Gantt chart, is a two axis graphical chart with the vertical axis used for a list of related tasks or project stages and the horizontal axis representing the passage of time on a linear scale. The duration of each task or project stage on the chart is represented by a horizontal bar. The Gantt chart is one of the foundations of modern Project Management. The focus of a simple Gantt chart is the elapsed time required for completion rather than the resources required also there is no indication of dependencies. Despite its limitations, the Gantt chart is often one of the first disciplines to be employed by a project manager when constructing the initial project plan. It is also often used as the initial graphical view of the project data in several project management packages (e.g. Microsoft® Project). Created using Visio ® Standard 5.0 for Windows Gantt Chart Critical Path Analysis (CPA) and Program, Evaluation & Review Technique (PERT) can be seen as developments of the simple Gantt chart that give greater project planning capability.

The chart is named after the early scientific management pioneer Henry Lawrence Gantt (1861-1919) who first developed it. Gantt worked as an assistant to Frederick Winslow Taylor at Midvale Steel in the Pennsylvania, USA . While at Midvale he also developed a task and bonus scheme based on work measurement. Gantt had a slightly more humanitarian approach than his more famous colleague and tried to introduce conditions that had favourable psychological effects on the worker. His most famous publication is "Organizing Effective Work Systems".

an example of a Gantt chart showing Task names, times and duration
Diagram: Visio 5 GANTT chart
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