How does Decomposition work with the WBS?
If tackled properly decomposition is the prerequisite to an outstanding work breakdown structure. When you reach the stage of creating the work breakdown structure, all project deliverables and major tasks should be decomposed into work packages. Creating the work breakdown structure, should flow quickly, because tasks have already been broken down in a hierarchical manner.
The project objective should be listed at the top of the page, as this is the ultimate desired outcome of all of this work. Underneath it, link each deliverable and major task. Assign each deliverable a code – either a letter or a number. Every task item and work package that is listed underneath the deliverable will contain this code as the first part of its own code.
When the WBS is completed, it should contain every work package created during the decomposition phase, with a code reflecting the hierarchy. Each work package should have its own code, budget, and estimated duration. If you followed part three of this series, you will have decomposed each deliverable on its own sheet of paper. Double check to ensure that everything on that sheet of paper is represented underneath the deliverable listed in the WBS.