To calculate the volume of concrete needed, first convert the dimensions to feet: a 30x30 area is 30 feet by 30 feet, and 4 inches is 1/3 of a foot. The volume in cubic feet is 30 x 30 x (1/3) = 300 cubic feet. To convert cubic feet to cubic yards, divide by 27 (since there are 27 cubic feet in a cubic yard): 300 ÷ 27 ≈ 11.11 cubic yards. Therefore, you need approximately 11.11 yards of concrete.
996 square feet X 1/3 foot = 332 cubic feet.332 cft / 27 = 12.3 cubic yards
You will need 17.8 cubic yards of concrete.
10.67 Cubic Yards
10 yards
6.67 Cubic Yards
4.938 cubic yards.
996 square feet X 1/3 foot = 332 cubic feet.332 cft / 27 = 12.3 cubic yards
concrete is sold in cubic yards in the united states. I hope you are using a 1/4 inch diameter reinforce mesh. 1680 / 81 = 20.74 cubic yards without subtracting the mesh volume.
You will need 17.8 cubic yards of concrete.
10.67 Cubic Yards
532.4074 yards of concrete, round up to 533 yards.
You'll need 3.53 cubic yards of cement.
3.6 cubic yards will be enough.
6.94 Cubic Yards
10 yards
6.67 Cubic Yards
4.074 cubic yards for every foot the slab is thick.