Work Breakdown Structure Component
A distinct item (node) in the work breakdown structure that can appear at any level of the hierarchy.
Key Points
- Exists at any level of the WBS, from high-level summary to lowest-level detail.
- Can be a parent (summary) element or a leaf element such as a work package.
- Should have a clear description and a unique identifier to support scope control.
- Represents deliverable-oriented scope, not time-based activities or resources.
Example
In a building project, "Electrical System" at level 2, "Lighting" at level 3, and "First-Floor Lighting" at level 4 are each WBS components. Any of these entries, regardless of level, is considered a component.
PMP Example Question
Which statement best describes a Work Breakdown Structure Component?
- An element at any level within the WBS, including summary elements and work packages
- A scheduled task with durations and assigned resources
- A project calendar constraint used for estimating
- A discrete risk event that may impact scope
Correct Answer: A — An element at any level within the WBS
Explanation: A WBS component is any entry in the WBS hierarchy. Activities, calendars, and risks are different project artifacts.
HKSM