The critical path method (CPM) aims at the determination of the time to complete a project and the important activities on which a manager shall focus attention.
The critical path method (CPM)
aims at the determination of the time to complete a project and the important
activities on which a manager shall focus attention.
Assumption For Cpm
In CPM, it is assumed that
precise time estimate is available for each activity.
Project Completion Time
From the start event to the end
event, the time required to complete all the activities of the project in the
specified sequence is known as the project completion time.
A continuous sequence, consisting
of nodes and activities alternatively, beginning with the start event and
stopping at the end event of a network is called a path in the network.
Path And Crtical Activities
Consider all the paths in a
project, beginning with the start event and stopping at the end event. For each
path, calculate the time of execution, by adding the time for the individual
activities in that path.
The path with the largest time is
called the critical path and the activities along this path are called the
critical activities or bottleneck activities. The activities are called
critical because they cannot be delayed. However, a non-critical activity may
be delayed to a certain extent. Any delay in a critical activity will delay the
completion of the whole project. However, a certain permissible delay in a non –critical
activity will not delay the completion of the whole project. It shall be noted
that delay in a non-critical activity beyond a limit would certainly delay the
completion the whole project. Sometimes, there may be several critical paths
for a project. A project manager shall pay special attention to critical
Tags : Operations Management - Network Problems
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