data:image/png;base64,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

3010

12.510

2

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Start with a standard brick Then build the two standard wall types. Once you have those.... Create a block that draws a standard width wall of whatever many rows Half-size bricks at the ends don't work because row B has an extra cement gap -- six of them instead of five. Since we're using a length of 5 for a cement gap, the two end bricks must be reduced by 5 in total. Because we need to add another 25 steps. So we divide by 2 to 12.5 instead of 30/2 = 15.