This waiting period is known as float or slack. This means that, even if you start work on the third building after 18 months from the project start date, you can finish it on time. Likewise, you could wait 18 months and then start working on the third building because it will take 13 months to complete. This means that you can wait 13 months and then start working on the second building because you can complete the second building in 18 months. It is 13 months longer than the second and 18 months longer than the third. Now, let us review the diagram for the critical path analysis.ĭid you notice that the first path is the longest? You can see that the first path is for the largest building, the second is for the medium-sized one, and the third is for the smallest building. For the first building, the duration is 31 months, the second will take 18 months, and the third will require 13 months. You calculate the duration for each path. You develop the network diagram, which comprises three paths, each representing a building. The first is the largest, the second is medium-sized, and the third is the smallest. They may appear to be opposites, but they convey the same message.įor example, let’s say you have a project to construct three buildings. Notice that the first statement talks about the longest path and the other talks about the shortest duration. The shortest duration to complete the project.The longest path in the network diagram, or.Every path has a duration, and the one with the longest duration is the critical path. In the critical path network method, you focus on managing the critical path.Ī network diagram has many paths originating from one point and ending at another point. If you follow this advice and complete the blog post, you won’t have problems solving Critical Path Method questions on the PMP Exam. Please follow each step in this blog post, and don’t move on until you understand the previous steps. The critical path method is a lengthy and complex concept. Project planners use this method to develop project schedules, including IT, research, and construction. Kelly developed this technique in the late 1950s. Critical Path Method (CPM) is a project schedule modeling technique.
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