(IP2M METRR EVMS Glossary)Ī defined task or duty such as design, building, construction, maintenance, manufacture of equipment or components. All work within a program is described in terms of work scope, budget and schedule and authorized through the work authorization system. It is a product- oriented family tree composed of hardware, software, services, data and facilities and other project-unique tasks which serves as an outline of the project that becomes more detailed under the subheadings or work packages.Ī contractor?s internal process for authorizing the commencement of program work. Used by the project management team to organize and define a project into manageable objectives and create a blueprint by which the steps leading to the completion of a project are obtained. These identifiers should provide a structure for a hierarchical summation of costs and resources. Each item in the WBS is assigned a unique identifier. The WBS should be extended to the level necessary for management action and control based on the complexity of the work. The WBS breaks down all authorized work scope into appropriate elements for planning, budgeting, scheduling, cost accounting, work authorization, measuring progress, and management control. A WBS is a direct representation of the work scope in the project, documenting the hierarchy and description of the tasks to be performed and their relationship to the product deliverables. The WBS also facilitates communications as it establishes a common frame of reference for customers, management, and IPTs. It should ensure that the work scope is entirely covered and allow for the integration of technical, schedule, and cost information. The WBS is a product-oriented division of project tasks depicting the breakdown of work scope for work authorization, tracking, and reporting purposes, which facilitates traceability and provides a control framework for management. The WBS is used as the basic building block for the planning of all authorized project work. Work Breakdown Structure (WBS) Dictionary:Ī WBS dictionary defines the work scope for each element in the WBS. With EVM the dictionary may be extended to the Control Account Level or one level above. Work that is included, as well as closely related work that is excluded is normally contained in the definition of each WBS element. Material that has been released to manufacturing, engineering, design or other services under the contract and includes undelivered manufactured parts, assemblies, and products, either complete or incomplete.Ī work package contains a task or set of tasks performed within a control account, and is the point at which work is planned, progress is measured, and earned value is computed.Ī two-part document containing: 1) a listing of all WBS elements, and 2) the defined scope of each element. A period of time lasting 12 months, from January 1 to December 31 (calendar year) or from October 1 to September 30 (US Government fiscal year).
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