Schedule in a delay for the whole project. This

Schedule Development

Numerous projects was unsuccessful
to meet schedule prediction
because of lack of schedule development   to overcome
this. There are methods which used for project schedule. Such as critical path method and PERT method

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1. Critical path method (CPM)

This
is the method which is used calculate the time duration which is taken by
project. The critical path method help to estimate the time which used to
schedule development. Critical method used by many organization to estimate the
time duration because in a single project there are multiple tasks running simultaneously
CPM able to show which task take how much time to complete . there are two way
to calculate CPM forward pass and backward pass .Which help to estimate earliest
time for the project the longest path is consider as Critical path . Because it
included all Critical element .

The
Critical path method is network diagram which have nodes in it .Every node have
task and value assigning to it by find the relationship between the node and after
calculating the node value we come to know the Critical path

 

For example:

The critical path is the chain of activities with
the longest time taken duration. A slow up in
any of these activities will result in a delay for the whole project. This critical path example help us to
understand the how this method work.

                                                                                                                      

 

 

 

Using the Critical Path Method (CPM)

The
duration of each activity is listed above each node in the diagram. For each
path, add the duration of each node to determine it’s total duration. The
critical path is the one with the longest duration.

 

 

 

There
are three paths through this project.

Start
-> Activity1->Activity3->Activity4->finish                              3+7+2=12

Start
-> Activity2->Activity3->Activity4->finish                              5+7+2=14    (Critical Path)

Start
-> Activity2->Activity5-> finish                                                5+4=9

 

Advantages of CPM

·        
Makes dependencies visible between the project
activities

·        
Increases visibility of impact of schedule revisions

·        
Enables the Project Manager to optimize efficiency

Disadvantages of CPM

·        
For large and complex projects, there’ll be thousands of
activities and dependency relationship

·        
The Critical Path Method does not account
for resource and resource allocation