Made with

Program Evaluation and Review Technique
(PERT) with ConceptDraw DIAGRAM

PERT method (Program Evaluation and Review Technique) is developed by the Ministry of Defense of the USA in 1958 in the framework of the project Polaris. PERT diagram is one of the tools for project management. With its help it is possible to analyze the time which is necessary for project execution and the consequence of tasks which involved into the project. The main advantage of such diagram type over the other diagram types is the possibility of calculation of the project fulfillment critical path that is the consequence of tasks which has the minimal float for execution and on which the total time for the whole project execution depends. If the task on the critical path is delayed than the execution of the whole project is delayed. There for it is important to calculate the critical path of the whole project execution and pay the most attention to tasks which appear on this way.

PERT Diagram is a more realistic approach of a project's time estimate analysis. After PERT chart was constructed user can discover the shortest possible duration for entire project timescale. The project timeline is the longest chain that might be taken with connected tasks on the PERT Diagram. Completion of serial tasks need to be accomplished in a presented order. At a project timeline can be independent tasks that not linked with main sequence they are called parallel tasks. PERT diagram is more suitable for Critical Path Analysis than Gantt chart for the reason that it undoubtedly better figure task dependencies. Project managers customarily utilize both methodologies.

It should be considered that PERT diagram does not give you ready concrete decisions but it helps you to find these decisions.

PERT diagram is constructed by definite rules. It represents the set of tasks, connected between each other in the consecution of their execution.

Program Evaluation and Review Technique (PERT) with ConceptDraw DIAGRAM title=

PERT benefits:

  • With a PERT method users can decide how to split project phases and choose the tasks' specification and dispose relations between them.
  • Different contractors involved in the project can coordinate the work on their tasks.
  • PERT determines schedule based on the availability of resources assigned to project tasks.
  • Decrease completion time of different tasks or supposed additional actions.
  • PERT utilizes resources within flexibility for implementing a thrift.
  • Attracting more management attention to critical stages of the project.

There are two variants of PERT diagram construction. In the first variant the duration is denoted on arrow connecting diagram nodes. Such diagram type is called AOA (activity on arrow).

The second type of PERT diagram is called AON (activity on node). In such diagram the information about the task duration is denoted in the diagram node and each task is represented in the form of rectangle with the definite set of fields. These are the task name, duration, early and late starts and early and late finishes of the task and also the float for execution of the given task.

Program Evaluation and Review Technique(PERT) Diagram

Pic 1. PERT Diagram — AON (activity on node)

With the help of ConceptDraw you can build diagrams of any type, but we recommend you using of AON variant, because such diagram type is easier for building and perception.

PERT diagram starts from the task which does not have duration and does not use resources and presents just a project start. This is done to denote the common start of the project as starting from the first day of the project several tasks are starting simultaneously. Analogously PERT diagram finishes with the task “finish”.

Program Evaluation and Review Technique - Start

Pic 2. PERT Diagram

No task is able to start before the preceding task is finished. Also each task may represent a separate project with its subtasks, which can be displayed on a separate diagram. In ConceptDraw this can be realized in the form of hyperlinks assigned to such tasks. These hyperlinks may point at some pages of your ConceptDraw document where the corresponding PERT diagrams are placed.

Program Evaluation and Review Technique - Link

Pic 3. PERT Diagram — Task

Objects for PERT diagrams building are gathered in a separate ConceptDraw objects library. To start working it is enough to launch PERT Chart template from ConceptDraw STORE.

To create a PERT diagram with ConceptDraw, it is enough to drag on a document page the number of ready objects, representing tasks, and then connect them between each other and fill out necessary task fields.

Program Evaluation and Review Technique Diagram

Pic 4. PERT Diagram with ConceptDraw

However, a Gantt chart gives more information than PERT diagram, and that assume to expand the information on it:

  • activity name
  • normal duration time
  • early start time (ES)
  • early finish time (EF)
  • late start time (LS)
  • late finish time (LF)
  • slack

Task appeared on the calculated critical path are marked out with red color. This way any person is able to see at once tasks which require special attention.

Program Evaluation and Review Technique - Critical Path

Pic 5. PERT Diagram — Critical Path

ConceptDraw PERT diagram software works across any platform, meaning you never have to worry about compatibility again. ConceptDraw DIAGRAM allows you to make PERT diagram on PC or macOS operating systems.

The samples you see on this page were created in ConceptDraw DIAGRAM using the Seven Management and Planning Tools solution, and demonstrate the solution's capabilities and the results you can achieve using this solution.

Seven Management and Planning Tools solution

Program Evaluation and Review Technique <br>(PERT) with ConceptDraw DIAGRAM  *

Pic 6. Program Evaluation and Review Technique (PERT) Diagram — Software Development Plan

The following features make ConceptDraw DIAGRAM the best Program Evaluation and Review Technique (PERT) Diagram Software:

  1. You don't need to be an artist to draw professional looking diagrams in a few minutes.
  2. Large quantity of ready-to-use vector objects makes your drawing diagrams quick and easy.
  3. Great number of predesigned templates and samples give you the good start for your own diagrams.
  4. ConceptDraw DIAGRAM provides you the possibility to use the grid, rules and guides. You can easily rotate, group, align, arrange the objects, use different fonts and colors to make your diagram exceptionally looking.
  5. All ConceptDraw DIAGRAM documents are vector graphic files and are available for reviewing, modifying, and converting to a variety of formats: image, HTML, PDF file, MS PowerPoint Presentation, Adobe Flash, MS Visio.
  6. Using ConceptDraw STORE you can navigate through ConceptDraw Solution Park, managing downloads and updates. You can access libraries, templates and samples directly from the ConceptDraw STORE.
  7. If you have any questions, our free of charge support is always ready to come to your aid.


Geo Map - Africa →

Africa has 54 fully recognized sovereign states, 9 territories and two de facto independent states with limited or no recognition. Vector design elements library Africa contains country map contours, geographical maps, cartograms and thematic maps for ConceptDraw DIAGRAM diagramming and vector drawing software. To help visualize the business and thematic information connected with geographic areas, locations or customs. All ConceptDraw DIAGRAM documents are vector graphic files and are available for reviewing, modifying, and converting to a variety of formats: image, HTML, PDF file, MS PowerPoint Presentation, Adobe Flash, MS Visio (.VDX,.VSDX).Geo Map - Africa *
Picture: Geo Map - Africa
Related Solution:

Home Design Software →

The ConceptDraw Home Design Software extended with Floor Plans solution from the Building Plans area of ConceptDraw Solution Park offers the powerful tools which will help you in easy developing vivid and professional-looking: Building plans, Home plans, House designs, Floor plans, Home interior designs, Furniture and equipment layouts.Home Design Software *
Picture: Home Design Software
Related Solution:

Basic Flowchart Symbols and Meaning →

While creating flowcharts and process flow diagrams, you should use special objects to define different statements, so anyone aware of flowcharts can get your scheme right. There is a short and an extended list of basic flowchart symbols and their meaning. Basic flowchart symbols include terminator objects, rectangles for describing steps of a process, diamonds representing appearing conditions and questions and parallelograms to show incoming data. This diagram gives a general review of the standard symbols that are used when creating flowcharts and process flow diagrams. The practice of using a set of standard flowchart symbols was admitted in order to make flowcharts and other process flow diagrams created by any person properly understandable by other people. The flowchart symbols depict different kinds of actions and phases in a process. The sequence of the actions, and the relationships between them are shown by special lines and arrows. There are a large number of flowchart symbols. Which of them can be used in the particular diagram depends on its type. For instance, some symbols used in data flow diagrams usually are not used in the process flowcharts. Business process system use exactly these flowchart symbols.Basic Flowchart Symbols and Meaning
Picture: Basic Flowchart Symbols and Meaning
Related Solution:

Planning a Trip with ConceptDraw PROJECT →

Planning a trip is real work; and the better this work is done, the more chances you have to enjoy an interesting itinerary and the trip in general. A good plan is never overloaded. It is always good to stick to the golden mean. Surely, you can create a perfectly accurate and detailed route. However, following it may become a hard task, which will turn your trip from a pleasure into a race to fulfil your own plan.Planning a Trip with ConceptDraw PROJECT *
Picture: Planning a Trip with ConceptDraw PROJECT
Related Solution:

Emergency Action Plan Template →

In the case of origin of an emergency is very important to have a correct, clear and comprehensible action plan which will help you to react quicker and to make right decisions. ConceptDraw DIAGRAM software extended with Fire and Emergency Plans solution from the Building Plans Area of ConceptDraw Solution Park provides extensive drawing tools for quick and easy creating fire and emergency plans, and also a set of various templates and samples, among them the Emergency Action Plan Template.Emergency Action Plan Template *
Picture: Emergency Action Plan Template
Related Solution:

How To create Value Stream Map (VSM) →

Value Stream Map template helps you to create VSM diagrams using ConceptDraw DIAGRAM software.How To create Value Stream Map (VSM) *
Picture: How To create Value Stream Map (VSM)
Related Solution:

How to Draw an Organizational Chart →

If your company is in chaos in clutter and no one understands their rights and responsibilities, maybe it's time to change that. One of the ways to put the company in order is to draw an organization chart that would reflect the structure and show the relationships among departments and positions. This is a very useful and easy to understand scheme. This is example of the one of the most typical kind of organizational chart. It depicts an organizational structure of the hierarchical type. Its construction is similarv to pyramid. The single main position on the top - in this case, the mayor's position followed by sub-levels of authority in his command. Each position in the pyramid reports only to his supervisor, and takes only a report of direct subordinates. Such scheme limits the number of communications. This organizational structure is effectively used in public organizations. Also it is suitable for any organization with the need for multiple levels of middle managers. The ability to create organizational charts of different types is supplied with ConceptDraw Ogrcharts solutions.How to Draw an Organization Chart *
Picture: How to Draw an Organizational Chart
Related Solution:

Network Security Architecture Diagram →

Network Security Architecture Diagram visually reflects the network's structure and construction, and all actions undertaken for ensuring the network security which can be executed with help of software resources and hardware devices. You dream to find powerful software for easy designing Network Security Architecture Diagram? We recommend to use ConceptDraw DIAGRAM extended with Network Security Diagrams Solution from the Computer and Networks Area of ConceptDraw Solution Park.Network Security Architecture Diagram
Picture: Network Security Architecture Diagram
Related Solution: