ᐅ Number of paving stones for a specific pattern

Hello everyone,

We want to pave part of our garden. We have chosen the paving pattern shown in the picture. Below it is the number of stones needed per square meter. No matter how hard I try, I can’t figure out how to arrive at that number... it doesn’t make sense to me why I would get decimal numbers for a pattern without any stone cutting...

So I simply outlined exactly 1 square meter in red based on the stone sizes I know (10x10 dark blue in the picture, 20x20 and 20x10 light colors in the picture), and then counted the stones...

I came up with the following quantities per square meter:

10 x 10 = 16 pieces
10 x 20 = 24 pieces
20 x 20 = 9 pieces

These numbers differ quite a bit from the ones given in the picture. They probably calculated using only the small marked pattern area of 40 x 40 cm (16 x 16 inches)... But why?

Maybe someone can shed some light on this. Thanks...

And for the next grid, you will need a different number of bricks.

I believe they know what they are doing, namely calculating averages.

In any case, you should (on average) always need the same number of 10x10 and 20x20 bricks. And the 20x10 bricks are needed statistically twice as often.

I don't know if joints need to be considered, but that could be another reason for discrepancies. However, I have not recalculated that.

Conclusion: your calculation is definitely wrong on a statistical average.

However, in my opinion, the pattern grid size is incorrectly specified. It should actually be 0.3×0.3 meters (12×12 inches) because then the pattern repeats.

What you have marked in red does not create a repeating pattern. Therefore, when connecting, you will need to use different bricks in a different quantity.

Thank you... the penny has dropped... oh man... of course, I’m not laying 1 sqm (10.8 sq ft) of samples side by side...

Thank you!!!