Creating Network Diagrams

Joseph Phillips
A free video tutorial from Joseph Phillips
4.5 instructor rating • 32 courses • 429,346 students

Lecture description

Network diagrams visualize the project work and show the relationship of the work activities and how they will progress from start to completion. They can be extremely complex or easy to create and configure. Most network diagrams in today’s project management environment use an approach called “activity-on-node” to illustrate the activities and the relationship between those activities.

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PMP Exam Prep Seminar - Pass the PMP on Your First Attempt

PMP Exam Prep Seminar - Earn 35 PDUs by completing the entire PMP course

29:35:30 of on-demand video • Updated January 2021

  • Earn 35 PDUs/Contact Hours by completing the entire course
  • You will get all the resources you need to pass the PMI PMP certification exam.
  • You will earn 35 exam contact hours as required by PMI
  • You will be able to discuss the PMBOK Guide with confidence.
  • Explain the project management processes
  • Discuss the project management knowledge areas
  • Demonstrate the formulas, charts, and theories of project management
  • Calculate float for complex project network diagrams
  • Memorize the formulas for earned value management
  • Compare and contrast processes, knowledge areas, theories, and project management best practices
  • Build a strong foundation in Agile project management for the new PMP exam
  • Complete hands-on assignments and exercises
English [Auto] Now that we've talked about the relationship between activities we can get in and begin creating a network diagram so to create a network diagram we're talking about visualizing the project work we're talking about the flow of the project work. So we're showing the relationship of our work activities and how the project flows from the start to the end the only type of network diagram you need to know where your exam is called activity on Node 8. In like in this little picture here activity see Indiani That's an activity. And so the arrows just show the flow. The nodes are where all the information is about the activity. What we use and what you'll be using and Eithan over here exam is called the precedence diagramming method the precedence diagramming method is like we saw with with our relationship between activities we have successors and predecessors. So predecessors are upstream successors or downstream. It's the most common it's what Microsoft Project uses. If you were to draw out the flow of your work like you start here and you end up here in the flow of all your activities you'll be using PTM. So what's the predecessor and a successor each activity can be a predecessor and a successor. So you can have an activity to prime the wall. While this could be a successor to install the drywall you have to put the drywall up first then you can prime the wall so it succeeds the drywall. What after this. Any activity after this would succeed this guy. So this could be paint the wall. So paint the wall is now a successor and this guy in this instance is a predecessor so don't let that. Don't let that tricky. That it can only be one or the other. So an activity could be both because you could have predecessors and successors. The activities are put in little square. These are the nodes. You might sometimes see them in a circle but squares are the most common. And then the arrows that you'll see in this. Let's take a look now the arrows that you see or the connection of the lines that you see are just show the flow of the work. So sometimes you don't see an arrow and other times you will don't let that trick you it's just the flow of the work the the lines show how the work flows. So in this example we're seeing these different nodes and we're seeing a lot of different numbers. So we're moving closer to a scheduled network analysis. I know that's what a lot of you are eager to see but this is our six our sample network diagram. This is a schedule model of how do we go from the start all the way to the end. And so we'll see this in more detail we're getting there. We're going to figure out how do we find float. This is how we do. This is what we base it on is you have to have a network diagram to examine. So hang tight. We're getting there. It's coming. Network templates just like our activity list. There's no reason to start from scratch every time. So if I have a similar project let's just adapt it. If you always have the same flow of works or nearly the same flow of work you can have a pre-populated network diagram that you just adapt. So again this is an organizational process asset. Keep moving forward.