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Imagine a cube 3' x 3' x 3' . that is a cubic yard. I believe a bag is 1/3 of a yard.

No It's less than that one 94 lb bag of Portland cement is one cubic foot. And there are 27 cubic feet in a cubic yard ( 3*3*3 = 27) so an 80 lb bag of premix is a little less than 1/27th

Q: How many cubic yards in a 80lb bag of concrete?

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1.8 Cubic yards of concrete is 48.6 cubic feet. Each 80lb bag of concrete is .6 cubic feet. Therefore, you would need 81 bags. Hope that helps. GEO

0.6 cubic feet in one 80 lb bag. with there being 27 cubic feet in one cubic yard: 0.02 cubic yards per bag, in other words, it would take 45 - 80lb bags to yeild 1 cubic yard of concrete

The term "yards" of concrete means cubic yards.

.029 cubic yards of concrete weighs aproximately 93.96lbs

10.67 cubic yards. Adjusting for safety, you should order a minimum of 11.5 cubic yards.

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1.8 Cubic yards of concrete is 48.6 cubic feet. Each 80lb bag of concrete is .6 cubic feet. Therefore, you would need 81 bags. Hope that helps. GEO

0.6 cubic feet in one 80 lb bag. with there being 27 cubic feet in one cubic yard: 0.02 cubic yards per bag, in other words, it would take 45 - 80lb bags to yeild 1 cubic yard of concrete

Assuming a thickness of four inches and allowing about 5% waste, you would need 9.33 cubic yards or about 419 80lb bags.

The term "yards" of concrete means cubic yards.

15.21 cubic yards 1369 40lb bags 913 60lb bags and only 685 of the 80lb bags.

.029 cubic yards of concrete weighs aproximately 93.96lbs

1.8 cubic yards will do it.

1.67 cubic yards.

0.89 cubic yards.

You will need 17.8 cubic yards of concrete.

You will need 0.56 cubic yards of concrete.

10.67 Cubic Yards