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how to calculate yards of concrete needed for a slab. Calculate the volume of concrete you need in cubic yards. To determine how many bags of concrete you will need divide the total cubic yards needed by the yield.
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The depth is somewhat trickier so well use a standard thickness of four inches for this slab. For a wall made of concrete the calculation is practically the same. Mark the area that will need concrete and divide it into smaller areas.
Calculate and get an answer of 008 cubic yards for one concrete tube.
Using measurements in feet. Multiply the length 10 ft by the width 10 ft by the depth 35 ft or 4 in and divide it by 27 the number of cubic feet in a cubic yard. The formula for cubic yards is this. If you have concrete delivered it is sold by the yard which is a cubic yard.
