Precedence diagram method

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The precedence diagram method is a tool for scheduling activities in a project plan. It is a method of constructing a project schedule network diagram that uses boxes, referred to as nodes, to represent activities and connects them with arrows that show the dependencies.

  • Critical tasks, noncritical tasks, and slack time
  • Shows the relationship of the tasks to each other
  • Allows for what-if, worst-case, best-case and most likely scenario

Key elements include determining predecessors and defining attributes such as

  • early start date..
  • late start date
  • early finish date
  • late finish date
  • duration
  • WBS reference
solving the PDM, with: BS is an early start date. BM is a late start date. KS is an early finish date. KM is a late finish date.

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