| Work Breakdown Structure |
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The purpose of a WBS is to identify Terminal Element s (the actual items to be done in a project). Therefore, WBS serves as the basis for much of Project Planning . Work breakdown structure is a very common project management tool. Many United States government Statements Of Work require work breakdown structures. HOW TO BUILD A WBS Whether the WBS should be activity-oriented or deliverable-oriented is a subject of much discussion . There are also various approaches to building the WBS for a project (see e.g. How to Build a Work Breakdown Structure below). Project Management Software , when used properly, can be very helpful in developing a WBS, although in early stages of WBS development, plain sticky notes are the best tool (especially in teams). An example of a work breakdown for painting a room (activity-oriented) is, to state the obvious:
The size of the WBS should generally not exceed 100-200 Terminal Element s (if more terminal elements seem to be required, use Subproject s). The WBS should be up to 3-4 levels deep. Each level should be 5-9 elements broad. These suggestions derive from the following facts: # Short-term Memory capacity is limited to 5-9 items. # having fixed time to plan a project, the more terminal elements there are, the less time there is to pay attention to any single one of them. Consequently, the estimates are less thought-through. # the more terminal elements there are the more there are potential Dependencies among them (see fact 2 above for consequences). EXAMPLE OF A WORK BREAKDOWN STRUCTURE BOOKS
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