3.56 Cubic Yards
Wiki User
∙ 14y agoYou will need 17.8 cubic yards of concrete.
You will need 0.56 cubic yards of concrete.
how many yards of concrete will i need to do a 20 x20 x4 slab
1.85 cubic yards.
10 yards
You will need 0.56 cubic yards of concrete.
You will need 17.8 cubic yards of concrete.
how many yards of concrete will i need to do a 20 x20 x4 slab
1.85 cubic yards.
You will need 1.23 cubic yards.
10 yards
At 4" thick you will need 1.23 cubic yards.
40 yards.
2.96 Cubic Yards
You will need 3.6 cubic yards.
You will need 27.6 cubic yards of cement.
Assuming you mean 28ft x 28ft x 6ft you would need 174 2/9 yards of concrete, assuming no waste.