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Anonymous
ANSWERS: 3
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the slab is only 2 inches thick ? 8x10=80 sq.ft / 6 =15 sqft or 2 yards i think 1 bag = 1 yrd so i would say 2 bags but buy 4 just in case
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It will vary by the brand check to see how the bags are marked. Your slab is 2"x96"x120"=23040 cubic inches. 1 cubic yard is 36x36x36 or 46656 cubic inches. So, You will need at least approx 1/2 cubic yard.
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1 pallet (42 bags) of 80lb bags of concrete make up a yard. 1 yard covers 80 sq ft at the most usual thickness of 4 in. You have 80 sq ft but only 2 in thick, so 21 bags is what is needed.
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