Arizona ROC CR-48 Ceramic, Plastic And Metal Tile Examination Practice Questions - Arizona ROC CR-48 Commercial & Residential Ceramic, Plastic, And Metal Tile License Exam

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Under ASTM F1869 (Anhydrous Calcium Chloride Test), what is the maximum acceptable Moisture Vapor Emission Rate (MVER) for direct thin-set mortar tile bonding over a concrete slab without a specialized moisture mitigation membrane?

3.0 lbs per 1,000 sq ft per 24 hours 5.0 lbs per 1,000 sq ft per 24 hours 7.5 lbs per 1,000 sq ft per 24 hours 10.0 lbs per 1,000 sq ft per 24 hours

Correct Answer:

3.0 lbs per 1,000 sq ft per 24 hours

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