![]() Find the critical path and estimated time of completion.įirst, let’s look at the activities and their immediate predecessors. In the question here, we have three objectives:ģ. No two activities can have the same starting and ending node.No activity can be represented by more than a single arc (the line with an arrow connecting the events) in the network.The network should have a unique starting and ending node. ![]() Other rules that need to be considered are: The activity between these nodes will not have any value. In the case of the example below this, the dotted line represents a relationship between nodes 3 and 2. Dummy ActivityĪ dummy activity represents a relationship between two events. In the case of our example, A, B, C, D, and E represent the activities taking place between their respective events. ActivityĪctivities represent action and consumption of resources like time, money, and energy required to complete the project. In the case of our example, node 1 will be referred to as the tail event, and 2 will be referred to as the head event. Event 1 is the tail event, and Event 2 is the head event. Let’s understand these terms with the help of a network diagram (which is the final output of the method).Ī circle represents events and will occur at the start and end of an activity. Present the chart: The final PERT chart should clearly show the relationships between tasks, the critical path, and the estimated duration of each task.īefore we get into the PERT Analysis process, we must talk about some important concepts: Events and Activities.Update the chart regularly: Revisit the PERT chart regularly to reflect changes in the project, such as changes in task dependencies, duration, or priority.Add critical path information: Determine the critical path and the sequence of tasks that determines the minimum overall project duration.Number the tasks and events, and list their estimated duration. Create a network diagram: Use arrows to connect the tasks and show their dependencies on each other.Determine task duration: Estimate the time each task will take to complete.Establish task dependencies: Identify the dependencies between tasks and determine the order in which tasks must be completed.Define the project scope: Determine the objectives and goals of the project, and list all the tasks required to achieve those objectives.In summary, PERT charts focus on the relationships between tasks, while Gantt charts focus on the progress of jobs over time. They are useful for monitoring progress and ensuring tasks are completed on time.Emphasize the duration of tasks and their start/end dates.Are helpful in planning and scheduling projects with multiple tasks and dependencies.Emphasize the sequence and timing of tasks.Visualize task dependencies and their interrelatedness in a project.PERT (Program Evaluation and Review Technique) and Gantt charts are both tools used in project management, but they serve different purposes: PERT Charts:
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