how many bags of 94lb portland cement make a cu yd using a 3:2:1 gravel:sand:cement ratio?
A 94 pound bag of Portland cement is about one cubic foot. If you do volume:volume:volume you would add about 5 more cubic feet of material with your recipe. (6 cubic feet total) A cubic yard is 3' x 3' x 3' or 27 cubic feet. Is the material Pre-mix ready-to-use concrete? If so then about 27 - 30 bags. If it is cement, then your best bet would be to make 6 times the recipe listed above, therefore 6 bags. Should give you a total of 30 cubic feet. is is ALWAYS good to make too much that too little. Make stepping stones with the leftover.
In my house they use Plastic Bags. And Paper Ones are not so easily available. Any ways, Paper is what I personally like to use.
