09-07-2012, 03:01 PM
Network Analysis : Pert and CPM
Network Analysis .ppt (Size: 1.01 MB / Downloads: 38)
Introduction
Network analysis is one of the important tools for project management.
Whether major or minor a project has to be completed in a definite time & at a definite cost.
The necessary information of any information can be represented as a project network.
Key terminology
Activity : All projects may be viewed as composed of activities. It is the smallest unit of work consuming both time& resources that project manager should schedule & control.
An activity is represented by an arrow in network diagram
Classification of activities
Predecessor activity: Activities that must be completed immediately prior to the start of another activity are called predecessor activities.
Successor activity : activities that cannot be started until one or more of other activities are completed but immediately succeed them are called successor activities.
Concurrent activities: activities that can be accomplished together are known as concurrent activities.
Dummy activity: An activity which does not consume any resource but merely depicts the dependence of one activity on other is called dummy activity.
Application of network analysis
Construction industry
Manufacturing
Research development
Administration
Marketing planning
Inventory planning
Advantages
Planning & controlling projects
Flexibility
Designation of responsibilities
Achievement of objective with least cost
Better managerial control
Guidelines for Network Construction
A complete network diagram should have one stand point & one finish point.
The flow of the diagram should be from left to right.
Arrows should not be crossed unless it is completely unavoidable.
Arrows should be kept straight & curved or bent.
Angle between arrows should as large as possible.
Each activity must have a tail or head event.. No two or more activities may have same tail & head events.
Once the diagram is complete the nodes should be numbered from left to right. It should then be possible to address each activity uniquely by its tail & head event.