Which of the Following Practices Will Help to Prevent Moisture

Which of the following practices will help to prevent moisture problems that negatively impact slab-on-grade foundations?

A) Slope ground away from foundation at (0.5 ft per 10 ft)
B) Install 10 mil vapor barrier beneath slab over a gravel drainage pad
C) Install foundation drain assembly that includes filter fabric, gravel and perforated polyvinyl chloride (PVC) pipe
D) All of the above

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