Tuesday, April 20, 2010

Project Evaluation Review Technique (PERT) and Gantt charts

Although this business management technique seems to be slightly more difficult to comprehend than the previous one (First come, first served), it actually makes the management of tasks and organisation of work much simpler.

Let's start with a general definition of PERT:

"PERT is a method to analyze the involved tasks in completing a given project, especially the time needed to complete each task, and identifying the minimum time needed to complete the total project."

Simply put, make a list of things to do to bring about a desired result, and how long each of them will take. This is something each one of us can and should do, be it in our personal or professional lives, in order to get a clearer idea of steps to our goal and predictable speed of achievement.

Let's draw a table where Column 1 would be titled "Task", Column 2 "Duration", Column 3 "Prerequisite."

Once this table is complete, we will want to get a better, graphical idea of the timeline and tasks that can or should be run concurrently. An exemple follows.


We'll then draw a network diagram, also called Gantt chart (developed by a Mr. Gantt), described by Wikipedia as follows:

"A Gantt chart is a type of bar chart that illustrates a project schedule. Gantt charts illustrate the start and finish dates of the terminal elements and summary elements of a project. Terminal elements and summary elements comprise the work breakdown structure of the project. Some Gantt charts also show the dependency (i.e. precedence network) relationships betweek activities. Gantt charts can be used to show current schedule status using percent-complete shadings and a vertical "TODAY" line as shown here. "

For simple projects, a piece of paper, a pencil and an eraser will be good enough. For more complex situations, there are numerous software which will help you draw a chart from organising next Sunday's festive lunch to developing a new airplane. You may try your hand at one for free here. Another interesting source is here. These are not recommendations and I don't endorse either of these companies or their products. These suggestions are inserted only for illustration purposes.

Although PERT and Gantt are old news in most of the world, they still provide robust project management methods. I'm sure trying them will open you to a whole new world of possibilities and make previously insurmountable projects a collection of streamlined, easy to manage smaller tasks.

Readers, I will appreciate your feedback here. Please let me know whether you think this article opened new possibilities for you and how you intend to use them. Conversely, if you don't think these suggestions useful, please let me know why, and what would be a better way of tackling project management in your line of business.

1 comment:

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