NV C-4E Drywall Practice Questions - Nevada C-4E Drywall Contractor Examination Exam

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In the ASTM C1396 definition, 1/2-inch Type X gypsum board is qualified by at least what fire-resistance rating in the standard wood-stud test wall?

20 minutes 3/4 hour (45 minutes) 2 hours with one layer per side 4 hours

Correct Answer:

3/4 hour (45 minutes)

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