BS ISO 21511:2018 pdf download

BS ISO 21511:2018 pdf download.Work breakdown structures for project and programme management
1 Scope
This document provides guidance for work breakdown structures for organizations undertaking project or programme management. It is applicable to any type of organization including public or private and any size of organization or sector, as well as any type of project and programme in terms of complexity, size or duration. This document provides relevant terms and definitions, concepts, characteristics, benefits, uses, integration and relationships related to work breakdown structures. It does not provide guidance on the use of processes, methods or tools in the practice of developing and using a work breakdown structure. Annexes A and B provide examples of work breakdown structures and relationships to other breakdown structures.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1 100 % rule
concept concerning the entire work required to be accomplished to achieve the project or programme scope captured in the work breakdown structure (3.13)
Note 1 to entry: The 100 % rule applies to the parent and child elements. The child level of decomposition of a
work breakdown structure element represents 100 % of the work applicable to the parent level.
3.2 functional breakdown structure
decomposition of the functions necessary to perform the work elements of a project or programme
3.3 hierarchical decomposition
process of dividing project or programme scope into successively smaller work breakdown structure elements (3.15)
3.4 management information system
hardware and software used to support the compilation of information, analysis and reporting of project and programme metrics
4.1 General
A work breakdown structure is a decomposition of the entire scope of work that should be completed in order to achieve the project or programme objectives. The work breakdown structure is used throughout the project or programme, to establish the framework for the management of the work. The structure should provide a logical framework for decomposing 100 % of the work defined by the project or programme scope. NOTE Currently, most work breakdown structures are hierarchical, and this document will focus on this type of structure. New software models are presenting options to the hierarchical decomposition structure. See Annex C. Each descending level of the work breakdown structure should provide a more detailed definition of the work. Work may be product-oriented, deliverable-oriented or result-oriented; and, additionally, may be focused on project or programme phases, disciplines or locations. The entire scope of work of the project or programme should include work to be done by the project or programme management team or team members; subcontractors; and other stakeholders.