•The schedule network is a graphical display (from left to right across a page) of all logical interrelationships between elements of work — in chronological order.
•This order is from initial planning through to project closure.
•As the project progresses, regular analysis of this network diagram is a check to ensure that the project is proceeding ‘on track’ Network diagrams are one of the modern tools of project management. There are three popular network based scheduling techniques.
•Critical Path Method (CPM)
•Project Evaluation and Review Technique (PERT)
•Microsoft Project (and others) have blended CPM and PERT into one approach
•PERT was developed for the Polaris missile/submarine project in 1958
•CPM developed by DuPont during the same time
Initially, CPM and PERT were two different approaches
•CPM used deterministic time estimates and allowed project crunching •PERT used probabilistic time estimates
Network Scheduling Advantage
1.Consistent framework
2.Shows interdependences
3.Shows when resources are needed
4.Ensures proper communication
5.Determines expected completion date
6.Identifies critical activities
7.Shows which of the activities can be delayed
8.Determines start dates
9.Shows which task must be coordinated
10.Shows which task can be run parallel
11.Relieves some conflict
12.Allows probabilistic estimates
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Project Planning and Management Study notes for M. plan Sem-II
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