![]() Number of concrete blocks needed = 90 concrete blocksīy multiplying the core volume of a single concrete block by the number of concrete blocks needed to build the wall, we can then find the fill volume, as shown below:įill volume = core volume per concrete block × number of concrete blocks neededįill volume = 0.006424 m³ × 90 concrete blocksįrom our calculations above, we can now say that we need around 0.5782 m³ of concrete or mortar to fill the concrete blocks that we will use to construct our wall. Number of concrete blocks needed = 7.2 m² / 0.08 m² Number of concrete blocks needed = (3.0 m × 2.4 m) / (0.4 m × 0.2 m) Number of concrete blocks needed = (wall width × wall height) / (block width × block height) ![]() Now that we have all the details we need, we need to divide the total wall area by the area of a concrete block to find the number of blocks our wall needs: The calculator will display the estimated amount of material needed in cubic yards. Click the 'Calculate CMU Fill Amount' button. Enter the fill depth in inches (the thickness of the fill material). How much block fill is required when core filling the blocks Below are recommendations only - not guaranteed amounts 150mm Standard Blocks - 0.53 m³ of concrete/100 blocks or 1m³ of concrete/188 blocks. Specify the size of the CMUs (e.g., 8x8x16 inches). The core volume of a standard size 6-inch concrete block is approximately 392 in³ or 0.006424 m³. How to Use a CMU Fill Calculator: Enter the number of CMUs to be filled. As a sample calculation, let us consider building a 3.0-meter wide and 2.4 meter high wall using 6-inch thick standard 8" × 16" (20 cm × 40 cm) concrete hollow blocks.
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