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Topic: Pert Chart
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A Pert
Chart is a way of showing the flow of work. Each box
represents a task, and a line (or Link) from one to another means
the second will take place after the first is completed. The first
task is called the Predecessor, and the one following is
called the Successor. Any task can serve as the Predecessor
to multiple Successors. Alternatively, a task may have no
successors and/or no predecessors. A Pert Chart cannot have a
closed loop of work; that would result in a meaningless schedule.
The addition of a Link that would cause a closed loop is called a
Circular Dependency and is rejected or prevented by the
program.
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| The Critical Path is the line of tasks through the PERT
Chart which directly affect the completion in a project. Changing
the duration of any task in the Critical Path of the Pert Chart
changes the overall end date. One way to hasten the completion of
a project is to focus on shortening the tasks on the Pert Chart's
Critical Path. Conventions: It
is common practice to
- Highlight tasks in the Critical Path in RED to make
them stand out.
- Include tasks with zero duration called Milestones to
mark key points of progress. Milestones are drawn as rectangles
with trimmed or rounded corners. Tasks are drawn as regular
rectangles.
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