Scope Definition: Tools and Techniques Scope Definition: Outputs

Verifying the correctness of the decomposition requires determining that the lower-level WBS components are those that are necessary and sufficient for completion of the corresponding higher-level deliverables. Figure 5-7. Sample Work Breakdown Structure Organized by Phase Figure 5-8. Sample Work Breakdown for Defense Materiel Items A Guide to the Project Management Body of Knowledge PMBOK ® Guide Third Edition 116 2004 Project Management Institute, Four Campus Boulevard, Newtown Square, PA 19073-3299 USA

5.3.3 Create WBS: Outputs

.1 Project Scope Statement Updates If approved change requests result from the Create WBS process, then the project scope statement is updated to include those approved changes. .2 Work Breakdown Structure The key document generated by the Create WBS process is the actual WBS. Each WBS component, including work package and control accounts within a WBS, is generally assigned a unique identifier from a code of accounts. These identifiers provide a structure for hierarchical summation of costs, schedule, and resource information. 5 The WBS should not be confused with other kinds of breakdown structures used to present project information. Other structures used in some application areas or other Knowledge Areas include: • Organizational Breakdown Structure OBS. Provides a hierarchically organized depiction of the project organization arranged so that the work packages can be related to the performing organizational units. • Bill of Materials BOM. Presents a hierarchical tabulation of the physical assemblies, subassemblies, and components needed to fabricate a manufactured product. • Risk Breakdown Structure RBS. A hierarchically organized depiction of the identified project risks arranged by risk category. • Resource Breakdown Structure RBS. A hierarchically organized depiction of the resources by type to be used on the project. .3 WBS Dictionary The document generated by the Create WBS process that supports the WBS is called the WBS dictionary and is a companion document to the WBS. The detailed content of the components contained in a WBS, including work packages and control accounts, can be described in the WBS dictionary. For each WBS component, the WBS dictionary includes a code of account identifier, a statement of work, responsible organization, and a list of schedule milestones. Other information for a WBS component can include contract information, quality requirements, and technical references to facilitate performance of the work. Other information for a control account would be a charge number. Other information for a work package can include a list of associated schedule activities, resources required, and an estimate of cost. Each WBS component is cross-referenced, as appropriate, to other WBS components in the WBS dictionary. .4 Scope Baseline The approved detailed project scope statement Section 5.2.3.1 and its associated WBS and WBS dictionary are the scope baseline for the project. A Guide to the Project Management Body of Knowledge PMBOK ® Guide Third Edition 2004 Project Management Institute, Four Campus Boulevard, Newtown Square, PA 19073-3299 USA 117 .5 Project Scope Management Plan Updates If approved change requests result from the Create WBS process, then the project scope management plan may need to be updated to include approved changes.