Activity On Arc Network Diagram

Activity on arrow diagrams are the topic for this module.

Activity on arc network diagram. Here s a simple example that can help you learn how network diagrams can be useful in any project you manage. In the last situation shown above we have a dotted arc. In an activity on the arc network format project activities are represented by arcs as shown in figure 2. Forward and backward pass calculations and determining the duration of a project are also covered.

The nodes are events or milestones denoting the start and or finish of a set of activities of the project and implicitly model the precedence relations between the nodes. This dotted arc is a dummy activity. You will also learn the use of multiple dummy activities pointing to a single event in a. Creating a network diagram can be an involved process that begins after you ve determined predecessors to your activity.

Suppose a team is tasked with renovating a kitchen an activity network diagram or project management diagram would list and portray all activities from buying materials to completing the final clean. In this episode we show how to use activity on arrow notation to draw network diagram. Network analysis activity on arc examples network analysis example 1990 ug exam. Professor odeh will discuss how to draw an activity on arrow diagram and how to number the nodes.

A dummy activity is a type of operation in a project network which neither requires any time nor any resource. You find out how to draw the network diagram for a sample project from the information in. Dummy activities often have a zero completion time and are used to represent precedence relationships that cannot be easily if at all represented using the. The representation and more features of dummy activity in network analysis are explained below.

It is an imaginary activity shown in a project network to identify the dependence among operation. The network diagram is shown below and note the dummy activity between nodes 3 and 2 to represent the condition that activities 3 and 4 cannot start until activity 2 has been completed. An example of an activity network diagram is any project with several activities as part of its process. The diagram below illustrates the kinds of situation we can represent in network diagrams.