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카포트 콘크리트 가이드

Carport slabs use 4–5 inch concrete at 3,500 PSI on compacted gravel. One-car carports are typically 12×20 ft; two-car versions are 20×20 ft. Slope ¼ inch per foot for drainage. A 20×20 ft carport at 5 inches needs approximately 6.2 cubic yards of concrete.