A PERT chart, also known as a PERT diagram, is a project management tool that is used to plan, organize, and coordinate work within a project. At around the same time, a comparable technique, the critical path method (CPM), was created for project management in the private sector. The term "pert" comes from the words planning, estimating, and scheduling all on one chart.
The PERT chart was developed by Barry Boehm with assistance from Peter Corrigan and Mary Anne Fennell of IBM in the early 1980s. It has been widely adopted by both private and public-sector organizations worldwide.
On the PERT chart, tasks are represented by nodes, and connections between tasks represent activities required to complete the task or goals. Nodes are divided into five categories: certain, likely, possible, unlikely, and uncertain. Each node is given a percentage completion value to reflect its estimated date of completion. Tasks are ranked by calculating their priority values; the task with the highest priority value will be completed first.
In addition to representing tasks as nodes, the PERT chart can also be used to represent resources such as staff members or materials needed to complete tasks. For example, employees could be represented as nodes linked to tasks they work on. If one employee leaves the company, his or her node would be removed from the chart and replaced with a blocked node until either the employee returns to work or the leave is longer than expected.
It gives a graphical depiction of a project's chronology, allowing project managers to break down and analyze each individual activity in the project. This helps them identify potential problems before they occur.
PERT was developed by William E. Peterson et al. in 1972. It is an acronym for Project Evaluation and Review Technique. The term "project evaluation and review technique" was coined by Peterson to describe what his method did: it evaluated projects periodically during their life cycles to determine if they were on track and if necessary made changes as required to keep them on track. He first published his ideas in a book titled Project Management with PERT (Wiley, 1973).
In its most basic form, a PERT chart consists of five sections: Planning, Development, Implementation, Control, and Close-Out. Each section is divided into tasks that can be done at any time during the project. Tasks are represented by circles on the chart, with dates marking the beginning and end of each task. A horizontal line divides the chart into two equal parts: one for planning and one for executing activities. Project managers use the chart to identify things such as delays or changes to plans that need to be made during the project.
The PERT method has been adapted and used by many organizations over the years.
Example of CPM How Do You Create a PERT Chart? The actions below must be taken in order to create a PERT chart. Particular initiatives and milestones are recognized. Determine the project's exact sequencing. Construct a network diagram. Determine the amount of time required for each project activity. Control the vital route. As the project proceeds, update the PERT chart. Use the following steps to create a PERT chart.
In this example, we will make a PERT chart for a new drug called "SuperChew". SuperChew has six activities that will complete its development. Each activity takes a certain amount of time. We will use data like these to build a PERT chart: Activity Duration Total Project Length Control Cycle 1 month 2 months 5 months 3 months 6 months 4 years + 12 months Development Phase 2 years
Let's see how it works. Start with the first activity on the list - Activity 1. It takes two months to complete it. So, look at the timeline below and mark two boxes next to Activity 1. Then, move on to Activity 2. It takes three months to complete it. 2. Continue doing this until all the activities have been marked off your timeline. In our case, this means that boxes should appear in months 2, 5, and 8 on the timeline.
Now, you need to determine the duration of each activity.