The precedence diagram method (PDM) is a tool for

scheduling A schedule (, ) or a timetable, as a basic time-management tool, consists of a list of times at which possible tasks, events, or actions are intended to take place, or of a sequence of events in the chronological order in which such things ...

activities in a

project plan A project plan, is a series of structured tasks, objectives, and schedule to a complete a desired outcome, according to a project managers designs and purpose. According to the Project Management Body of Knowledge (PMBOK), is: "...a formal, appr ...

. 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. It is also called the activity-on-node (AON) method. * 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 * activity name * WBS reference Slack/ Float: Determines the duration of activity delay that the project can tolerate before the project comes in late. The difference between the earliest and the latest start time. i.e. Slack = latest start date - earliest start day or Slack = latest finish time - earliest finish time. Any activities which have a slack of 0, they are on the critical path. TinhSoDoMangPDM

Different Precedence diagram Methods *

Arrow diagramming method Arrow diagramming method (ADM) is a network diagramming technique in which activities are represented by arrows. ADM is also known as the activity-on-arrow (AOA) method. Usage ADM is used for scheduling activities in a project plan. Precedenc ...

Project network A project network diagram, also known an activity network diagram (AND) is a information graphics, graph that displays the order in which a project’s activities are to be completed. Derived from the work breakdown structure, the Work breakdown ...

Critical-path method The critical path method (CPM), or critical path analysis (CPA), is an algorithm for scheduling a set of project activities. A critical path is determined by identifying the longest stretch of dependent activities and measuring the time requi ...

Gantt chart A Gantt chart is a bar chart that illustrates a schedule (project management), project schedule. It was designed and popularized by Henry Gantt around the years 1910–1915. Modern Gantt charts also show the Dependency (project management), depe ...

Program evaluation and review technique The program evaluation and review technique (PERT) is a statistical tool used in project management, which was designed to analyze and represent the task (project management), tasks involved in completing a given project. PERT was originally ...

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Precedence Diagram Method
at Better Projects {{Authority control Project management techniques Schedule (project management)

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