Product Design, Manufacturing & Innovation Resources
Lar » Estrutura Analítica do Projeto

Estrutura Analítica do Projeto

1957
  • United States Department of Defense (DoD)
  • NASA
Escritório de gerenciamento de projetos com diagrama de estrutura de decomposição de trabalho para métodos organizacionais.

(Imagem gerada apenas para fins ilustrativos)

A Work Breakdown Structure (sometimes abbreviated WBS) is a key project deliverable that organizes the team’s work into manageable sections. It is a hierarchical and incremental decomposition of the project into phases, deliverables, and work packages. The WBS is a tree structure that shows a subdivision of effort required to achieve an objective, such as a program, project, or contract.

The Work Breakdown Structure (WBS) concept was developed by the U.S. Department of Defense in 1957 as part of the Polaris missile program, in conjunction with the Program Evaluation and Review Technique (PERT). Its primary innovation was to provide a systematic, deliverable-oriented way to deconstruct a large, complex project into smaller, more manageable components. The fundamental principle of the WBS is the ‘100% Rule,’ which states that the WBS must capture all the work defined in the project scope—and only the work in the scope. It represents the total effort and deliverables of the project.

The WBS is typically depicted as a hierarchical chart, resembling an organization chart. The top level (Level 1) represents the entire project. Subsequent levels break down the work into major deliverables or phases. The decomposition continues until the work is broken down into ‘work packages,’ which are the lowest level of the WBS. A work package is a piece of work that can be realistically estimated, scheduled, and assigned to an individual or a team. To complement the visual chart, a WBS dictionary is often created. This document provides detailed information about each WBS element, including a description of the work, deliverables, budget, schedule, and assigned responsibility. The WBS is not a schedule or a plan, but rather the foundation upon which schedules, cost estimates, and resource plans are built. It provides a common framework for all project stakeholders, ensuring a clear and shared understanding of the project’s scope.

UNESCO Nomenclature: 5312
Ciências da gestão

Tipo

Sistema abstrato

Interrupção

Incremental

Uso

Uso generalizado

Precursores

  • Organizational charts
  • Systems engineering principles
  • Early military project planning techniques
  • Hierarchical decomposition concepts from mathematics and logic

Aplicações

  • cost estimating and budgeting
  • resource allocation
  • schedule development
  • risk management
  • procurement management
  • scope control and change management

Patentes:

NA

Ideias de Inovação Potencial

Devido ao tráfego de bots de coleta de dados, atualmente superior a 40 mil por dia, este conteúdo é reservado aos membros da comunidade.
> Login < ou > Registrar < (100% gratuito) para acessar isso, assim como todo o restante do conteúdo e das ferramentas restritas.

Related to: work breakdown structure, WBS, project management, scope, deliverable, decomposition, work package, project planning, hierarchy, scope management.

Contexto histórico

Estrutura Analítica do Projeto

1910
1914
1950
1957
1960
1960
1970
1890
1914
1942
1957
1957
1960
1965
1970

(Caso a data seja desconhecida ou irrelevante, por exemplo, "mecânica dos fluidos", é fornecida uma estimativa aproximada de seu surgimento notável)

Princípios relacionados à invenção, inovação e tecnologia

Imagens em tamanho real e downloads estão disponíveis apenas, 100% gratuitos, para membros registrados.