Research Methods & Evidence-Based Practice Flashcards

What does 'R-value' measure, and why is researching it important when insulating a home?

Answer: Thermal resistance; important for ensuring insulation meets energy code requirements

R-value measures insulation's thermal resistance; selecting the correct R-value ensures compliance with energy codes and effective climate control.

A handyman is asked to repair a deck built in the 1980s. Before beginning, researching the wood species and era is important primarily because:

Answer: Pre-1980s wood may have been treated with CCA (chromated copper arsenate), a hazardous preservative

CCA-treated lumber, common before 2004, contains arsenic and requires specific handling, disposal, and PPE procedures.

Which of the following best describes a 'benchmark' in trade skill development?

Answer: A standard or reference point used to evaluate quality or measure progress

A benchmark is a recognized standard against which performance or quality is measured, helping tradespeople assess and improve their work.

When evaluating two different methods for waterproofing a basement wall, what criteria should guide the evidence-based selection?

Answer: Performance data, material compatibility, cost-effectiveness, and code compliance

Evidence-based selection weighs documented performance, material compatibility, code requirements, and cost to identify the most reliable solution.

What is the purpose of consulting local amendments to model building codes?

Answer: Local amendments reflect regional conditions, climate, or policy differences that modify the base model code

Jurisdictions adopt amendments to tailor model codes to local climate, seismic activity, soil conditions, or policy priorities, making them legally binding locally.

A handyman discovers mid-project that the repair scope is larger than initially assessed. The evidence-based response is to:

Answer: Document the additional findings, inform the client with evidence, and revise the scope accordingly

Documenting findings and communicating transparently with the client supports informed decision-making and maintains professional integrity.

When is it appropriate to consult a structural engineer rather than relying solely on NCCER reference materials?

Answer: When modifications affect load-bearing elements, foundations, or exceed scope of standard reference guidance

Structural modifications beyond standard handyman scope — such as removing walls or altering foundations — require licensed engineering analysis.