There are three well-known types of Gantt charts: the Gantt load chart, the Gantt layout chart, and the Gantt project chart. A Gantt chart is essentially a bar chart laid on its side. The horizontal axis corresponds to time and the vertical axis to a collection of related activities, machines, employees, or other resource. Bars are used to represent load durations or activity starting and ending times. The Gantt chart is appealing in that it is easy to interpret and can provide a visual summary of a complex schedule.
In principal, the three types of Gantt charts are similar, but each has a somewhat different application. The load chart is used to show the amount of work assigned to resources (typically equipment) over a given amount of time. Sequencing issues are ignored here. Load charts are useful for showing work assigned to a project, but do not show the progress of an on-going project. The Gantt layout chart is used to block out reserved times on facilities and is one...
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