What type of supporting materials should be attached to a code change request?

The correct choice emphasizes the importance of providing research and case studies as supporting materials for a code change request. In the context of the Ontario Building Code and similar regulatory frameworks, substantiating a proposed change with well-documented research and relevant case studies is crucial. This evidence helps to illustrate the necessity, benefits, and practical implications of the proposed changes.

Research can provide empirical data that supports the effectiveness or need for the proposed code changes, while case studies can offer real-world applications and outcomes of similar changes in other jurisdictions or projects. This approach strengthens the argument for the change and demonstrates that it is rooted in evidence-based practice rather than opinion or conjecture.

Other types of supporting materials, while they can be valuable in specific contexts, may not directly address the need for compelling evidentiary support. For instance, meeting minutes and project timelines might offer context but lack the research depth needed to justify a code change. Drafts of the code change text, while necessary for clarity, do not provide the rationale behind why the changes are being proposed. Personal testimonies from stakeholders may highlight individual perspectives but are less impactful without the factual basis of research and case studies.