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PROJECT MANAGEMENT CPM/PERT
Project ,[object Object],Plan your work first…..then work your plan
Network analysis Introduction Network analysis is the general name given to certain specific techniques which can be used for the planning, management and control of projects. One definition of a project: “ A project is a temporary endeavour undertaken to create a "unique" product or service”
History ,[object Object],[object Object],[object Object],PERT  was developed by the US Navy for the planning and control of the  Polaris missile program  and the emphasis was on completing the program in the shortest possible time. In addition PERT had the ability to cope with uncertain activity completion times (e.g. for a particular activity the most likely completion time is 4 weeks but it could be anywhere between 3 weeks and 8 weeks).  CPM  was developed by  Du Pont  and the emphasis was on the trade-off between the cost of the project and its overall completion time (e.g. for certain activities it may be possible to decrease their completion times by spending more money - how does this affect the overall completion time of the project?)
CPM - Critical Path Method ,[object Object],[object Object],[object Object],[object Object]
PERT -  Project Evaluation & Review Techniques ,[object Object],[object Object],[object Object],[object Object]
Originated by H.L.Gantt in 1918 Gantt chart Advantages  - Gantt charts are quite commonly used. They provide an easy graphical representation of when activities (might) take place. ,[object Object],[object Object],[object Object]
CPM/PERT ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Project Network ,[object Object],[object Object],[object Object],[object Object],[object Object]
Activity on Node & Activity on Arrow ,[object Object],[object Object],[object Object],[object Object],[object Object]
Activity Slack ,[object Object],[object Object],[object Object],[object Object],[object Object]
Critical Path ,[object Object],[object Object],[object Object]
Benefits of CPM/PERT ,[object Object],[object Object],[object Object],[object Object],[object Object]
Questions Answered by CPM & PERT ,[object Object],[object Object],[object Object],[object Object],[object Object]
example Illustration of network analysis of a minor redesign of a product and its associated packaging. The key question is:  How long will it take to complete this project ?
For clarity, this list is kept to a minimum by specifying only immediate relationships, that is relationships involving activities that " occur near to each other in time".
[object Object],[object Object],[object Object],One answer could be, if we first do activity 1, then activity 2, then activity 3, ...., then activity 10, then activity 11 and the project would then take the sum of the activity completion times, 30 weeks. “ What is the minimum possible time in which we can complete this project ?   “ Before starting any of the above activity, the questions asked would be
We shall see below how the network analysis diagram/picture we construct helps us to answer this question.
CRITICAL PATH TAKES  24 WEEKS  FOR THE COMPLETION OF THE PROJECT
Packages are available to determine the shortest path and other relevant information.
Data entry window
Output of the package
Limitations to CPM/PERT ,[object Object],[object Object],[object Object]

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Pert

  • 2.
  • 3. Network analysis Introduction Network analysis is the general name given to certain specific techniques which can be used for the planning, management and control of projects. One definition of a project: “ A project is a temporary endeavour undertaken to create a "unique" product or service”
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15. example Illustration of network analysis of a minor redesign of a product and its associated packaging. The key question is: How long will it take to complete this project ?
  • 16. For clarity, this list is kept to a minimum by specifying only immediate relationships, that is relationships involving activities that " occur near to each other in time".
  • 17.
  • 18. We shall see below how the network analysis diagram/picture we construct helps us to answer this question.
  • 19. CRITICAL PATH TAKES 24 WEEKS FOR THE COMPLETION OF THE PROJECT
  • 20. Packages are available to determine the shortest path and other relevant information.
  • 22. Output of the package
  • 23.