FL Structural Carpentry Practice Questions - Florida Certified Structural Carpentry Specialty Contractor Examination Exam

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In wood frame construction, what is the primary function of a water-resistive barrier (WRB) applied over exterior wall sheathing?

To shed liquid water that penetrates the cladding while allowing water vapor to escape the wall cavity To provide structural shear resistance for the wall assembly To serve as the primary thermal insulation layer in the wall To act as an air barrier that eliminates all vapor movement through the wall

Correct Answer:

To shed liquid water that penetrates the cladding while allowing water vapor to escape the wall cavity

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