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
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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.