Whether you’re a project manager or a project team member, you must familiarize yourself through network diagrams — additionally known together the project schedule network diagram. A job network diagram is crucial tool due to the fact that it helps teams visualize the activities that need to be completed over the duration of a project. It additionally gives crucial context favor task duration, sequence, and dependency.

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What is a project network?

A job network is a graph that reflects the activities, duration, and interdependencies of jobs within her project.

What is a job schedule network chart in project management?

A project schedule network diagram visualizes the sequential and also logical relationship between tasks in a task setting. This visualization relies on the clean expression the the chronology the tasks and events.

Most often, a job network chart is portrayed as a chart with a collection of boxes and also arrows. This network diagram tool is used to map out the schedule and work sequence because that the project, and track its progression through each phase — up to and including completion. Due to the fact that it incorporates the huge tasks that need to take place over the project’s duration, a network chart is likewise useful in portraying the border of the project.

Benefits the the project administration network diagram

A network diagram allows a job manager to monitor each aspect of a project and also quickly re-publishing its condition with others. Its various other benefits include:

Visual depiction of development for stakeholdersEstablishing job workflowsTracking dependencies and also potential bottlenecks

Research additionally shows that depicting data in a visual means can boost comprehension and also enhance retention — an interpretation that a network diagram can an increase performance and also productivity if reducing stress amongst your team members.

Types of task network diagrams: arrow diagram and precedence diagram

There room two main types of network diagrams in job management: the arrowhead diagramming an approach (ADM), likewise known as “activity network diagram” or “activity ~ above arrow”; and the precedence diagramming method (PDM), also known together “node network” or “activity on node.”

Arrow diagram an approach (ADM)

The ADM, or activity network diagram, provides arrows to represent activities associated with the project. It’s vital to note that, as result of the ADM’s limitations, that is no longer widely used in task management. However, it’s still helpful to understand ADMs, so the you deserve to recognize these diagrams if they arise in your job-related environment.


The tail the the arrowhead represents the begin of the task and the head to represent the finish.The size of the arrow typically denotes the expression of the activity.Each arrowhead connects 2 boxes, well-known as “nodes.” The nodes are used to represent the begin or end of an task in a sequence. The beginning node of an task is sometimes dubbed the “i-node,” v the last node the a sequence sometimes dubbed the “j-node.”The only relationship in between the nodes and task that one ADM chart deserve to represent is “finish to start” or FS.

Occasionally, “dummy activities”—arrows that do not stand for a direct relationship—need come be contained in ADM network diagrams. In the diagram below, activity C have the right to only take place once tasks A and also B space complete; in the network diagram, did you do it connected task A to task C. Maybe we’re talking about tiling a floor (activity C): It can only start once the concrete is poured (activity A) and the patent are derived (activity B). Since activities A and B room not directly related—A doesn’t lead to B, and B doesn’t lead to A—you’ll need to attract a dummy activity between B and C to show that C is dependency on B gift completed.An ADM chart also does not have actually a means to encapsulate lead and lag time without introducing brand-new nodes and also activities.

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Precedence diagram an approach (PDM)PDM network diagrams are frequently used in project management today and also are a an ext efficient alternate to ADMs. In the precedence diagramming method for producing network diagrams, each box, or node, represents an activity—with the arrows representing relationships between the different activities. The arrows can as such represent every four feasible relationships:

“Finish come Start” (FS): once an task cannot start before another activity finishes“Start to Start” (SS): once two tasks are maybe to begin simultaneously“Finish to Finish” (FF): When two work need to end up together“Start come Finish” (SF): This is an uncommon dependency and only offered when one task cannot end up until another activity starts

In PDM, command times and lag times have the right to be written alongside the arrows. If a particular activity is walking to need 10 days to elapse until the next activity can occur, for example, you can simply compose “10 days” over the arrow representing the relationship in between the linked nodes.

Further reading:

What is readjust Management in project Management? What is Agile Methodology in job Management? What is expense Benefit evaluation in job Management? What is cost Management in task Management? What is cost Variance in job Management?