Contact Us
Sign In / Sign Up for FREE
Go to advanced search...

PERT and CPM - Essay Example

Comments (1) Cite this document
Program Evaluation and Review Technique (PERT) and Critical Path Method (CPM) are the two well-known, narrowly associated techniques that are used broadly to keep an eye on the development of large projects; they both share almost the same characteristics and are often lumped together as one technique as both of them lead to same end result: a critical path, the longest time required for the completion of a project, and critical activities with slack time zero.
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER98.8% of users find it useful
Read TextPreview

Extract of sample "PERT and CPM"

Download file to see previous pages If negative, it indicates the amount of time that must be saved so that the project finish date is not delayed. By default and by definition, a task with 0 slack is considered a critical task. If a critical task is delayed, the project finish date is also delayed."
However, there is little distinction between the two; this difference comes from their way of treating the activity time. In PERT, activity time is considered as a random variable, contrary to CPM where each activity requires a single deterministic time value. Furthermore, PERT focuses exclusively on the time variable whereas CPM includes the analysis of the time/cost trade-off.
The task starts from A which requires 7 weeks for completion. Following A, there are two tasks, B and D, which can be carried out simultaneously and they, respectively, require 3 weeks and 8 weeks for completion. Task C immediately follows task B which at least requires 10 weeks (Sum of weeks required by task A and task B) to begin and will take 1 week to finish. Task C is followed by task E which needs both task C and task D to be completed before its start. Since, task C requires 11 weeks and task D requires 15 weeks to finish, therefore, it is logically understood that task E cannot be started before elapse of 15 weeks time-period.
Keeping the above explanation in focus, the earliest start time for each task can be summarized as shown in below table:
Code of task
Earliest Start time
It can be concluded from above analysis that the project will require minimum 22 weeks to complete; in other words, the longest path from start stage till finish stage is minimum duration of the project. This path, called critical path, has been already highlighted with the thickest and darkest line in above figure.
If any task that lies in critical path is delayed, then ultimately the project gets delayed. However, the tasks outside the critical path can be deferred by certain amount of time. For example, task E is not part of critical path, therefore, if it is delayed by 4 weeks, even then so task J will be started as per its earliest start time, as calculated in above table, because task J can only be started once task I, which lies in critical path and requires 21 weeks to finish, is completed.
CPM Representation:
The above so-far discussion can be summarized in terms of CPM as follows:
Critical Path Method (CPM): = A, D, F, H, I, J
= 7, 8, 1, 3, 2, 1
= 22 weeks
Through CPM, the critical path time can be reduced by carrying out task differently. For example, the time for sanitary and electrical installation (Task D) is 8 ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“PERT and CPM Essay Example | Topics and Well Written Essays - 1250 words”, n.d.)
PERT and CPM Essay Example | Topics and Well Written Essays - 1250 words. Retrieved from
(PERT and CPM Essay Example | Topics and Well Written Essays - 1250 Words)
PERT and CPM Essay Example | Topics and Well Written Essays - 1250 Words.
“PERT and CPM Essay Example | Topics and Well Written Essays - 1250 Words”, n.d.
  • Cited: 0 times
Comments (1)
Click to create a comment or rate a document
freidabeatty added comment 1 year ago
Student rated this paper as
Good paper! Used it to complete an assignment for a miscellaneous course. It was easy as ABC, for the first time in my life.



... of media There is new training program of ASAP by the name of “pace” which focuses on nurturing the managerial skills of the participants and to increase their productivity by giving them simple day to day tricks and tips The participants will be awarded with certificates at the end of the training program. Time management services are also a very important part of this program because the primary importance is of time in handling the productivity issues of cooperate world. (Asaporg, 2013) Similarly, among the other renowned professional associations who are providing state of the art services to the clients in order to increase productivity, there is a very well acclaimed name known as collaborative project management (CPM) solutions. CPM...
8 Pages(2000 words)Research Paper

PERT network

...Assignment 3 Value: 10% Due 24 June 2005 Word Length: Not applicable(exercise) Format: Essay (APA Referencing) Copy and Turnitin Copy Attempt both questions below: 1 Consider the PERT network: Activity Optimistic Estimate Most Likely Estimate Pessimistic Estimate 1-2 2 4 5 1-3 3 4 5 1-4 6 7 9 2-3 3 5 6 2-5 5 7 8 3-5 2 4 5 4-5 5 6 7 Designate the start of the project as time 0, and the scheduled time to complete the project (by contract) is 14 days. A Using the 3-time estimate shown above, calculate the expected value and the standard deviation for the expected value of the time required for each activity. B Using the time given by your expected value calculations determines the critical path for the project. C compute the probability...
2 Pages(500 words)Math Problem

Data Warehouse Gantt Chart and PERT Chart

...Running Head: DATA MART PROJECT Data Mart Project: Gantt Chart and Network Diagram [Put here] [Put here] Gantt Charts and Network Diagrams have been very simple, but effective tools for project management. With the development of software applications such as Microsoft Project, these tools are now in even more widespread use. Data Mart Project: Gantt Chart The project plan in concern (Data Mart Project) uses a Gantt chart to organize the tasks. The task breakdown is done assuming a linear or waterfall development approach and it is a fairly complex breakdown. Work has been allocated on an hourly basis taking a total of 809 hours, which is approximately 100 working days. Since the 100 days are excluding the weekends, the elapsed... Head: DATA...
2 Pages(500 words)Essay

Schedule and Cost Control Techniques

... of project management which is basically designed to analyze and represent various tasks related with the project management. CPM or critical path method is the technique developed by DuPont essentially to address the issue of shutting down the plants and then restarting them. In its essence CPM models the activities and events of a project as a network. (NetMBA, 2008) This therefore provides a graphical overview of the project and the project is seen as a series of visualizations of the various interconnected activities related with the project. There are various similarities as well as differences between the two techniques. A comparison of the two would suggest following: A) PERT and CPM both view projects as a group of activities...
2 Pages(500 words)Essay

Project Management CPM/PERT

... It basically implies using the above methods in conjunction with each other. 4. Figure 4.1 shows the CPM chart for normal project durations. The various paths and their durations can be listed as shown in Table 4.1. Activity 3-4 has been introduced as a dummy activity. From this the normal project duration comes out as 83 days. Table 4.1: Calculation of Normal Path Durations Path Name Path Duration (in days) Path 1 1-4-6-7 51 Path 2 1-2-3-4-6-7 66 Path 3 1-2-3-6-7 74 Path 4 1-2-3-5-6-7 83 Figure 4.1: CPM Chart for Normal Project Durations 5. Figure 5.1 shows the CPM chart for normal project durations. The various paths and their durations can be listed as shown in Table 5.1. From this the project duration using crash time comes out as 68...
4 Pages(1000 words)Term Paper

History of Pert Theory and CPM

...Overview of History of PERT Theory and CPM History of Pert Theory Pert theory, which is also referred to as the project evaluation and review technique was established in 1957. It is a project management tool or technique that can be used to handle the whole project. The tool or technique was developed by the government contracting company Booze Allen Hamilton in Virginia in coordination with the Navy of United States Of America (Klastorin, 2003). The objective behind establishing Project Evaluation & Review Technique was to support the project of U.S. Navy’s Polaris Submarine (Honsinger, 2009). After one year of establishing Project Evaluation & Review Technique i.e. in 1958, the technique became useful in the Fleet Ballistic Missile...
2 Pages(500 words)Term Paper

The Advantages of Gantt Charts over PERT Diagrams

... Management Introduction Project managers employ numerous tools to ensure that a project has been accomplished successfully (Pinto & Jeffrey, pp 289-230). Among the tools employed include: schedule tools such as Gantt charts and PERT diagrams (Project Management Institute, pp129-163). Therefore, this study focuses at providing a sharp insight on the advantages of Gantt charts over PERT Diagrams as well as determining whether it is advantageous for a company to employ PERT diagrams. Additionally, the study will put forth the circumstance under which one may decide to crash a project as well reasons why project managers focus on those activities that lie within a critical path rather than those on the slack time when crashing a project...
2 Pages(500 words)Assignment

Scheduling and project management (pert and cpm SLP

...the intended quality, quantity and time. This implies that the production/operations department adopts techniques of project management in its process. The finance department crowns this whole chain by tapping in the funds required to produce and market the products to the customers. Finally, the management of the workforce in these departments that fall under the human resource department requires that expertise be employed in the management and addressing of the issues mentioned in the previous departments. Difficulties or limitations of implementing PERT and CPMPERT and CPM project management techniques are great tools that have been widely adopted for use by most organizations. However, the application of these techniques is...
4 Pages(1000 words)Assignment

Comparative Study of Critical Resource Diagramming Versus PERT and CPM

...Comparative Study of Critical Resource Diagramming Versus PERT and CPM Agriculture problem. Frank Hurley is a farmer who plants wheat and corn. a. He has 250 acres on which he wishes to plant wheat and corn for the season. For crop rotation determinations he must plant at least 50 acres of each crop. b. He can participate in a federal program that will necessitate him to produce at least as much wheat as corn. Under this program, he is assured to earn $150 per acre of wheat planted and $200 per acre of corn planted. c. Alternatively he can opt not to take part in the program in which case he schemes he would make only $125 per acre of wheat planted and $184 per acre of corn planted, but there would be no requirement to produce...
6 Pages(1500 words)Assignment

Change Management

...Introduction Change is an aspect that cannot be ignored in any given organisation yet the human instinct naturally opposes change. Change usually occurs frequently and at a rapid pace. Consequently, those who tend to resist it may slow down an organisation or even destroy it altogether. Resistance to change usually occurs as a result of the natural tendency to maintain status quo. Human beings generally have an inclination towards stability and this means that organizational change may be regarded as something that will cause instability. Usually, employees may begin depicting some signs of resistance through scepticism. This kind of behaviour creates a barrier that may make it extremely hard to implement organisational change... Change is...
10 Pages(2500 words)Coursework

Marks and Spencer Organizational Development Process

...Table of Contents Page No INTRODUCTION 2 BODY 2 Anticipating the Need to Change, Problem and Area for Improvement 3 Impact of Organization’s Culture 3 Client and Practitioner Considerations 5 Diagnostic Process and Data Collection 5 Overcoming Resistance to Change 5 Institutionalization Action Plan and Timeline 6 Action Plans, Strategies, and Techniques 7 Specific Intervention Analysis 7 CONCLUSION 8 REFERENCES 9 Introduction: Marks and Spencer is major retail business group having over 125 years of retail business experience. Its operations are widely expanded in domestic and international... of Contents...
7 Pages(1750 words)Case Study
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic PERT and CPM for FREE!

Contact Us