Concrete and mortar are normally sold and used on a cubic volume basis (either cubic feet or cubic yards). Use the following to calculate the amount of concrete you need for a slab:
Cubic feet of Concrete = Slab thickness in feet x Slab width in feet
x Slab length in feet
1 cubic yard = 27 cubic feet
1 cubic foot = 1,728 cubic inches
In using the above equations, note that the volume of the final concrete mixture is approximately two-thirds the volume of the original cement-aggregate mixture. This occurs because the sand and cement fill in the void spaces between the gravel fragments.
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Bon Tool Co. has made a serious effort to provide exact and current information, but does not guarantee the accuracy of the data. Bon Tool Co. cannot assume responsibility for the application of information nor guarantee results.
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