Section: Volume E
Explanation:
5.4.2.1 Decomposition
Decomposition is a technique used for dividing and subdividing the project scope and project deliverables into smaller, more manageable parts. The work package is the work defined at the lowest level of the WBS for which cost and duration can be estimated and managed. The level of decomposition is often guided by the degree of control needed to effectively manage the project. The level of detail for work packages will vary with the size and complexity of the project. Decomposition of the total project work into work packages generally involves the following activities:
Identifying and analyzing the deliverables and related work;

Structuring and organizing the WBS;

Decomposing the upper WBS levels into lower-level detailed components;

Developing and assigning identification codes to the WBS components; and

Verifying that the degree of decomposition of the deliverables is appropriate.

6.2.2.2 Rolling Wave Planning
Rolling wave planning is an iterative planning technique in which the work to be accomplished in the near term is planned in detail, while the work in the future is planned at a higher level. It is a form of progressive elaboration.
Therefore, work can exist at various levels of detail depending on where it is in the project life cycle. During early strategic planning, when information is less defined, work packages may be decomposed to the known level of detail. As more is known about the upcoming events in the near term, work packages can be decomposed into activities.
Process: 6.2 Define Activities
Definition: The process of identifying and documenting the specific actions to be performed to produce the project deliverables.
Key Benefit: The key benefit of this process is to break down work packages into activities that provide a basis for estimating, scheduling, executing, monitoring, and controlling the project work.
Inputs
1. Schedule management plan
2. Scope baseline
3. Enterprise environmental factors
4. Organizational process assets
Tools & Techniques
1. Decomposition
2. Rolling wave planning
3. Expert judgment
Outputs
1. Activity list
2. Activity attributes
3. Milestone list

Section: Volume E