Sunday, 25 February 2018

Project Management - Blog 3 - What is a Work Breakdown Structure (WBS)?





A Work Breakdown Structure (WBS) is a super tool as it presents a visualisation of the total scope of a project. It enables management to determine, prioritise important tasks, estimate efforts in order for the team to accomplish project goals and deliver the desired outcomes. According to The Project Management Body of Knowledge (PMBOK), a WBS ‘’is a hierarchical and incremental decomposition of the project into phases, deliverables and work packages’’ (Project Management Institute, 2018).  In a WBS, the deliverable is the end goal and it can be a thing, a service, or an activity, and that depend on our project.  



Elements 

Figure 1 Simple WBS Chart


There are many methods to partition or break down project work, the most popular is a form of visual demonstration of the project’s activities, phases, and deliverables in one single chart. The team determine project milestones, deliverables and break them further down into smaller components, called activities, required to complete the deliverable or milestone.

Typically, the WBS chart looks like a tree-structured diagram, but it can also be in the form of hierarchical tables or numbered lists. Regardless of the format, a WBS normally consist of Terminal elements (aka work packages), WBS coding and dictionary. Work packages are the lowest or smallest units of work. WBS coding includes outline numbering of WBS elements in decimal sequences to represent the sequential order of each level and activity. Finally, to complete the WBS, a related dictionary may be created. This will contain detailed information about each element of the project. The dictionary includes definitions of each work package, effort level, duration of tasks, and resources. A WBS dictionary is generally presented in a table or spreadsheet format.

Purpose
The primary goal of a WBS is to make a large project more manageable. It aids to transform project activities into less complicated tasks, so it is easier for the team to understand the scope of the project and work related. By breaking down activities into smaller chunks it means work can be done simultaneously by different team members, leading to better team productivity and overall easier project management.

Work Breakdown Structure analysis
A good way to identify the potential risks is to analyse our WBS. The team draws a diagram and questions each and every element, which eventually will give a valid list of potential risks for the project. As they are connected to the appropriate work packages this means the team will be in a better position to handle the risks.




References:

Practice Standard for Work Breakdown Structures (Second Edition), published by the Project Management InstituteISBN 1933890134, page 8


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