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Carpentry Level 3 Test 3 Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What is the primary purpose of blocking between studs in a framed wall?✔✔ To provide support for fixtures and prevent wall bowing
What is the standard rise and run for a residential stairway in inches?✔✔ 7 inches rise and 11 inches run
When installing drywall on a ceiling, what direction should it be placed in relation to the framing?✔✔ Perpendicular to the ceiling joists
What is the minimum handrail height required by most residential building codes?✔✔ 34 inches from the stair nosing
What tool is used to measure the pitch of a roof?✔✔ Framing square or digital angle finder 1 / 2
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Why is a stringer used in stair construction?✔✔ To support the treads and risers of the staircase
What is the main function of a jack rafter?✔✔ To connect the ridge board to the wall plate between hip or valley rafters
What material is commonly used as a vapor barrier under concrete slabs?✔✔ 6-mil polyethylene plastic sheeting
What does “plumb” mean in carpentry?✔✔ Exactly vertical
Why are expansion joints used in concrete or wood structures?✔✔ To allow for movement caused by temperature changes
What is the purpose of a birdsmouth cut in a rafter?✔✔ To allow the rafter to sit securely on the top plate of the wall
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