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how to figure out how many yards of concrete i need. Concrete can be purchased in multiple forms including in 60 or 80-pound bags or delivered in large amounts by specialized concrete mixer trucks. 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.
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Enter Height 4 ft or 48 in Enter Diameter 10 in. This would be good to know if you had a lot of sono-tubes or a large cylinder to fill. If youre not sure what size hole to dig a rule of thumb is to use a hole diameter 3 times the post diameter and 1 3 as deep as the post height.
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The formula for cubic yards is this. To do so divide the cubic footage by 27 to get the yards of concrete needed. You can use this measurement to figure out how many bags of concrete to use. Lets be honest - sometimes the best concrete calculator is the one that is easy to use and doesnt require us to even know what the concrete formula is in the first place.
