The quality-related aspects are “what” related, as they provide indicative attributes and characteristics of circularity and adaptability They include the CBA determinants and the R-Ladder model. The solution-related aspects are “how” related and they mainly relate to the strategies, including examples, phase of implementation, and the corresponding building layers according to the shearing layers model by Steward Brand. The context-related aspects relate to the factors that could facilitate or impede the implementation of the CBA strategies. Finally, the possibility-related aspects relate to the applicability, effectiveness, and feasibility of the CBA strategies.
The CBA-AR framework is a knowledge-based guiding tool that provides practitioners with the knowledge they need to consider to implement building reuse projects in a circular and adaptable manner. The CBA-AR framework was developed based on the findings of a literature review study, case studies, and co-creation workshops. The framework brings together 12 components that are grouped under four blocks, namely quality-related, solution-related, context-related and possibility-related aspects. The figure below illustrates the main blocks of the CBA-AR framework and their components.
The framework comprises 33 strategies along with 10 enabling and 7 inhibiting factors. The CBA strategies are categorized under three groups as follows:
- Passive strategies are solutions that can promote CBA through the building design.
- Active strategies are solutions that foster CBA through the building configuration and user intervention.
- Operational strategies are process-oriented solutions that promote CBA.