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

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