AZ ROC C-40 Insulation Practice Questions - Arizona ROC C-40 Insulation Examination Exam

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An exterior wall assembly has a total thermal resistance of R-20 hr·ft²·°F/Btu. What is the overall thermal transmittance (U-factor) of this wall assembly?

0.050 Btu/hr·ft²·°F 0.200 Btu/hr·ft²·°F 0.020 Btu/hr·ft²·°F 5.000 Btu/hr·ft²·°F

Correct Answer:

0.050 Btu/hr·ft²·°F

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