NCCER Research Methods & Evidence-Based Practice 3 — Questions and Answers
Question 1: Which of the following best describes 'evidence-based practice' in a handyman context?
- Doing repairs exactly the way your first employer taught you
- Making decisions based on the cheapest available option
- Using methods supported by current codes, manufacturer data, and professional standards (Correct answer)
- Following whatever the homeowner requests without question
Correct answer: Using methods supported by current codes, manufacturer data, and professional standards
Evidence-based practice combines current codes, tested manufacturer guidance, and validated professional standards to produce reliable, safe results.
Question 2: A client shows you a repair video from a social media influencer. The technique shown violates local building code. You should:
- Follow the video to keep the client happy
- Explain that code compliance is required and perform the code-correct method (Correct answer)
- Report the influencer to authorities
- Refuse to do any work for the client
Correct answer: Explain that code compliance is required and perform the code-correct method
Professional handymen are responsible for code-compliant work regardless of what a client has seen online; explaining this maintains both safety and professional standards.
Question 3: What is the primary purpose of a Material Safety Data Sheet (SDS/MSDS)?
- To list the cost of the material
- To document hazards, safe handling, and emergency response for a chemical product (Correct answer)
- To certify that a product meets building code
- To provide installation step-by-step instructions
Correct answer: To document hazards, safe handling, and emergency response for a chemical product
The Safety Data Sheet communicates chemical hazards, PPE requirements, storage, and emergency procedures for hazardous materials.
Question 4: When researching whether a wall can be safely opened to run new wiring, which reference provides structural guidance?
- The electrical permit application
- Architectural drawings or structural engineering documents for the building (Correct answer)
- The homeowner's verbal description
- A plumbing code book
Correct answer: Architectural drawings or structural engineering documents for the building
Architectural and structural drawings show framing details and identify load-bearing elements that must not be compromised during renovations.
Question 5: A handyman uses the same caulk product for both a bathroom tile joint and an exterior window frame. This approach is problematic because:
- Caulk is always the wrong product for window frames
- Different applications require caulk formulated for specific conditions such as moisture, movement, and UV exposure (Correct answer)
- Only licensed contractors can select caulk types
- Color-matching is the only consideration when choosing caulk
Correct answer: Different applications require caulk formulated for specific conditions such as moisture, movement, and UV exposure
Caulk formulations vary by substrate, movement tolerance, moisture exposure, and UV resistance; using the wrong type leads to premature failure.
Question 6: Which of the following is an example of using a primary source in construction research?
- Reading a summary article about plumbing on a general contractor's blog
- Consulting the IRC directly for pipe sizing requirements (Correct answer)
- Asking a friend who once did plumbing work
- Watching a general DIY television program
Correct answer: Consulting the IRC directly for pipe sizing requirements
The International Residential Code is a primary authoritative source, whereas blogs, opinions, and TV programs are secondary or informal sources.
Question 7: Before starting a repair that involves cutting into drywall, a handyman should research which of the following to avoid hazards?
- The original paint color
- The location of wiring, plumbing, and potential presence of asbestos or lead (Correct answer)
- The homeowner's decorating preferences
- The brand of drywall used
Correct answer: The location of wiring, plumbing, and potential presence of asbestos or lead
Researching concealed hazards such as wiring, pipes, and hazardous materials prevents electrical shock, water damage, and toxic exposure.
NCCER Research Methods & Evidence-Based Practice 3
Which of the following best describes 'evidence-based practice' in a handyman context?