More on the WBS

May 8th, 2008 · No Comments

A Work Breakdown Structure is a results-oriented family tree that captures all the work of a project in an organized way. It is often portrayed graphically as a hierarchical tree, however, it can also be a tabular list of “element” categories and tasks or the indented task list that appears in your Gantt chart schedule.

Large, complex projects are organized and comprehended by breaking them into progressively smaller pieces until they are a collection of defined “work packages” that may include a number of tasks. A $1,000,000,000 project is simply a lot of $50,000 projects joined together. The Work Breakdown Structure (WBS) is used to provide the framework for organizing and managing the work.

In planning a project, it is normal to find oneself momentarily overwhelmed and confused, when one begins to grasp the details and scope of even a modest size project. This results from one person trying to understand the details of work that will be performed by a number of people over a period of time. The way to get beyond being overwhelmed and confused is to to break the project into pieces, organize the pieces in a logical way using a WBS, and then get help from the rest of your project team.

The psychologists say our brains can normally comprehend around 7-9 items simultaneously. A project with thousands or even dozens of tasks goes way over our ability to grasp all at once. The solution is to divide and conquer. The WBS helps break thousands of tasks into chunks that we can understand and assimilate. Preparing and understanding a WBS for your project is a big step towards managing and mastering its inherent complexity.

The WBS is commonly used at the beginning of a project for defining project scope, organizing Gantt schedules and estimating costs. It lives on, throughout the project, in the project schedule and often is the main path for reporting project costs. On larger projects, the WBS may be used throughout the project to identify and track work packages, to organize data for Earned Value Management (EVM) reporting, for tracking deliverables, etc.