Project management have the right to be understood as a systematic means of planning, scheduling, executing, monitoring, controlling the different facets of the project, so as to attain the goal made at the time of project formulation. PERT and also CPM space the 2 network-based project management techniques, which exhibition the flow and sequence of the activities and events. Program (Project) Management and Review an approach (PERT) is ideal for the tasks where the time needed to complete different tasks are no known.

You are watching: The main difference between cpm and pert is

On the other hand, the vital Path an approach or CPM is apt because that the jobs which room recurring in nature.

The two scheduling techniques use a common strategy for designing the network and for ascertaining its vital path. Castle are provided in the successful completion the a project and hence used in conjunction with each other. Nevertheless, the reality is the CPM is various from PERT in a way that the last concentrates ~ above time if the previous stresses on the time-cost trade-off. In the very same manner, over there are plenty of differences in between PERT and also CPM, which we room going to discuss in this article.

Content: PERT Vs CPM

Comparison Chart

Basis for ComparisonPERTCPM
MeaningPERT is a project administration technique, provided to control uncertain activities of a project.CPM is a statistical technique of project administration that manages well defined tasks of a project.
What is it?A method of planning and also control of time.A an approach to manage cost and also time.
EvolutionEvolved as research & development projectEvolved as building and construction project
ModelProbabilistic ModelDeterministic Model
Focuses onTimeTime-cost trade-off
EstimatesThree time estimatesOne time estimate
Appropriate forHigh precision time estimateReasonable time estimate
Management the Unpredictable ActivitiesPredictable activities
Nature the jobsNon-repetitive natureRepetitive nature
Critical and also Non-critical activitiesNo differentiationDifferentiated
Suitable forResearch and advancement ProjectNon-research projects prefer civil construction, ship structure etc.
Crashing conceptNot ApplicableApplicable

Definition of PERT

PERT is an acronym for regimen (Project) Evaluation and Review Technique, in i m sorry planning, scheduling, organizing, coordinating and controlling uncertain activities take place. The technique studies and represents the work undertaken to finish a project, to identify the least time because that completing a task and also the minimum time required to complete the whole project. That was occurred in the so late 1950s. That is aimed to mitigate the time and also cost of the project.

PERT offers time together a variable which represents the planned resource application together with performance specification. In this technique, very first of all, the project is divided into tasks and events. After that appropriate sequence is ascertained, and also a network is constructed. After the time essential in each activity is calculated and also the crucial path (longest course connecting every the events) is determined.

Definition that CPM

Developed in the so late 1950s, an essential Path an approach or CPM is one algorithm used for planning, scheduling, coordination and control of activities in a project. Here, it is assumed that the task duration is fixed and also certain. CPM is used to compute the earliest and latest feasible start time because that each activity.

The process differentiates the vital and non-critical tasks to mitigate the time and avoid the queue generation in the process. The reason for the identification of an important activities is that, if any task is delayed, it will cause the whole process to suffer. That is why the is called as an important Path Method.

In this method, very first of all, a list is ready consisting of every the activities needed to finish a project, complied with by the computation the time required to finish each activity. ~ that, the dependency in between the tasks is determined. Here, ‘path’ is identified as a sequence of activities in a network. The critical path is the course with the greatest length.

Key Differences in between PERT and also CPM

The most important differences in between PERT and also CPM are detailed below:

PERT is a project monitoring technique, by which planning, scheduling, organising, coordinating and controlling uncertain activities are done. CPM is a statistical an approach of project administration in i beg your pardon planning, scheduling, organising, coordination and also control the well-defined tasks take place.PERT is a an approach of planning and also control that time. Unequal CPM, i m sorry is a technique to control costs and time.While PERT is developed as a research study and breakthrough project, CPM progressed as a building and construction project.PERT is collection according to occasions while CPM is aligned towards activities.A deterministic design is provided in CPM. Vice versa, PERT supplies a probability model.There room three times estimates in PERT, i.e. Positive time (to), most likely time ™, cynical time (tp). Top top the various other hand, there is just one estimate in CPM.PERT an approach is finest suited because that a high precision time estimate, vice versa, CPM is ideal for a reasonable time estimate.PERT faces unpredictable activities, but CPM faces predictable activities.PERT is offered where the nature of the task is non-repetitive. In comparison to, CPM entails the task of recurring nature.There is a demarcation between an essential and non-critical activities in CPM, i m sorry is not in the case of PERT.PERT is best for research and development projects, yet CPM is for non-research jobs like building projects.Crashing is a compression an approach applied come CPM, to shorten the task duration, along with the least extr cost. The crashing ide is no applicable to PERT.

See more: 2000 Honda Shadow Sabre 1100 Specs, Honda Shadow Spirit 1100

Video: PERT Vs CPM


The difference between these 2 project administration tools is getting blurred as the approaches are an unified with the i of time. That is why, in most projects, they space being supplied as a solitary project. The primary suggest that distinguish PERT from CPM is the the former gives the excessive importance the time, i.e. If the moment is minimized, subsequently the price will likewise be reduced. However, expense optimization is the simple element, in the latter.