In each of these four examples, you will notice that the interior arches are thicker than the other walls. This may or may not be for structural reasons, but the heft of this detail emphasizes the foyer’s importance. If you want this affect, make those walls at least 8 in. (20 cm) and at most 18 in. (46 cm) thick; 12 in. (30 cm) might work well enough.
In each of these four examples, you will notice that the interior arches are thicker than the other walls. This may or may not be for structural reasons, but the heft of this detail emphasizes the foyer’s importance. If you want this affect, make those walls at least 8 in. (20 cm) and at most 18 in. (46 cm) thick; 12 in. (30 cm) might work well enough.
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