The formula for cubic yards is this. Length x width x thickness. For a wall made of concrete the calculation is practically the same.
Calculate the volume of the area after determining the shape of the area see the chart below by multiplying in the thickness of the concrete.
To find the required amount of concrete its important to know the volume of the drive way in cubic yards. Learning how to calculate the amount of concrete needed is easy when using our concrete formula and online concrete calculator. Determine the width length and depth of the area you want to concrete Multiply width by length this Square Footage Convert depth from inches into feet by dividing by 12 Now multiply the square footage width x length by the converted depth depth inches 12. For example you need concrete for three stairs that are 8 inches high and 8 inches deep and the total set of stairs will be 1 yard deep and 2 feet across.