Activity network Diagram is also known as arrow diagram, network diagram, activity chart, node diagram This is a method of displaying the timelines of all the various subtasks that are involved in any project and used for planning and managing processes and projects. It displays interdependencies between tasks through the use of boxes and arrows.
Activity Network Diagrams started out as an engineering and construction project management tool. This was developed by the U.S. Department of Defense. Activity diagram first used as a management tool for military projects. It was Adapted as an educational tool for business managers. It aids to find out the most efficient sequence of events needed to complete any project.
In the same time it enables to create a realistic project schedule by graphically showing the total amount of time needed to complete the project and the sequence in which tasks must be carried out including the tasks can be carried out at the same time and the critical tasks that need to keep an eye on.
There are number of benefits of using an Activity network such as,
- Display logical relationships among various activities in a project
- Allows the project manager to see how the various activities flow towards to completion of the project in a sequential manner.
- Provides an overview as to how resources are utilized in a project for a given time period which could help the manager to perform resource leveling if necessary.
- Lets the project manager see how the various activities flow towards completion in chronological order.