14.5. How to Prepare a WBS
Essentially, the preparation of an EWBS involves proceeding from objectives to portfolios to programs to projects to products and services. This is achieved by subdividing the work until a level is reached that provides the required effective technical performance, schedule, and cost control for a specific project activity and the associated performing organization. The number of subdivisions in the EWBS varies according to the complexity of the work. The level of detail should be clearly defined so that no duplication of effort occurs within or between performing organizations.
An EWBS is traditionally prepared using a top down approach that ensures that all work is planned and all derivative plans and associated ...
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