# Pert Charts Trisha Cummings. What Are Pert Charts? "PERT" developed by the United States Department of Defense as a management tool for complex military.

## Presentation on theme: "Pert Charts Trisha Cummings. What Are Pert Charts? "PERT" developed by the United States Department of Defense as a management tool for complex military."— Presentation transcript:

Pert Charts Trisha Cummings

What Are Pert Charts? "PERT" developed by the United States Department of Defense as a management tool for complex military projects is an acronym for "Program Evaluation and Review Technique". "PERT" developed by the United States Department of Defense as a management tool for complex military projects is an acronym for "Program Evaluation and Review Technique". Pert charts are used for project scheduling Pert charts are used for project scheduling

Pert charts allow software planners, or individuals to: Pert charts allow software planners, or individuals to: Determine the critical path a project must follow. Determine the critical path a project must follow. Establish most likely time estimates for individual task by applying statistical models. Establish most likely time estimates for individual task by applying statistical models. Calculate boundary times that define a time ‘window’ for a particular task. Calculate boundary times that define a time ‘window’ for a particular task.

Slack time is calculated for each node by subtracting ECT for a node from its LCT. Critical path is any node that has zero slack time. Slack time is calculated for each node by subtracting ECT for a node from its LCT. Critical path is any node that has zero slack time. Formulas: Formulas: O = Optimistic time estimate O = Optimistic time estimate M = Most likely time estimate M = Most likely time estimate P = Pessimistic time estimate P = Pessimistic time estimate

Advantages of Using Pert Charts. PERT charts can become very complex if detailed networks exist, but they force the manager to contemplate personnel assignments for the project in detail. To demonstrate best- and worst-case project scenarios, most PERT charts identify three time estimates: most optimistic, most pessimistic, and most realistic. PERT charts can become very complex if detailed networks exist, but they force the manager to contemplate personnel assignments for the project in detail. To demonstrate best- and worst-case project scenarios, most PERT charts identify three time estimates: most optimistic, most pessimistic, and most realistic. PERT charts are very useful in large, complex studies where overlooking details may create unresolvable problems. PERT charts are frequently used within an organization for detailed evaluation planning. The Critical Path of a PERT chart highlights important interim deadlines that must be met if the overall evaluation study is to be completed on time. PERT charts are very useful in large, complex studies where overlooking details may create unresolvable problems. PERT charts are frequently used within an organization for detailed evaluation planning. The Critical Path of a PERT chart highlights important interim deadlines that must be met if the overall evaluation study is to be completed on time.

PERT strengths The PERT network is continuously useful to project managers prior to and during a project. The PERT network is straightforward in its concept and is supported by software. The PERT network's graphical representation of the projects tasks help to show the task interrelationships. The PERT network's ability to highlight the project's critical path and task slack time allows the project manager to focus more attention on the critical aspects of the project-time, costs and people. The project management software that creates the PERT network usually provides excellent project tracking documentation. The use of the PERT network is applicable in a wide variety of projects. The PERT network is continuously useful to project managers prior to and during a project. The PERT network is straightforward in its concept and is supported by software. The PERT network's graphical representation of the projects tasks help to show the task interrelationships. The PERT network's ability to highlight the project's critical path and task slack time allows the project manager to focus more attention on the critical aspects of the project-time, costs and people. The project management software that creates the PERT network usually provides excellent project tracking documentation. The use of the PERT network is applicable in a wide variety of projects.