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Concrete Slabs - Required Thickness

Required thickness of concrete slabs.

Concrete slab - thickness

  • Driveways : 6 - 8 inches ( 0.15 - 0.2 m)
  • Side walks, barn and granny floors : 5 - 6 inches (0.125 - 0.15 m)
  • Porches, Home garage floors : 4 - 5 inches (0.1 - 0.125 m)
  • Farm building floors, Home basement floors : 4 inches (0.1 m)
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