Question 1
According to AWC DCA-6, what is the minimum diameter of lag screws or bolts used to fasten a deck ledger to a band joist?
Correct Answer:
1/2 inch
Question 2
DCA-6 Table 5 specifies fastener on-center spacing based on which parameter?
Correct Answer:
Deck joist span
Question 3
For a deck with a 14-foot joist span, DCA-6 requires 1/2-inch lag screws into a 2-inch nominal band joist to be spaced no further apart than what on-center distance?
Correct Answer:
13 inches o.c.
Question 4
Which ledger attachment condition is NOT permitted by DCA-6 or IRC Section R507?
Correct Answer:
Ledger fastened with lag screws to brick or stone veneer
Question 5
Per IRC R507.2.4, what is the minimum nominal thickness of corrosion-resistant metal flashing used at the deck ledger?
Correct Answer:
0.019 inch
Question 1
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About this Exam

Prepare with the InterNACHI Deck Inspector Practice Questions - InterNACHI Certified Deck Inspector Exam practice quiz. This question bank includes 100 questions covering deck, joist, dca-6, ledger, and minimum. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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InterNACHI Deck Inspector Practice Questions - InterNACHI Certified Deck Inspector Exam

This practice set contains 100 questions from the matching question bank and focuses on deck, joist, dca-6, ledger, and minimum. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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