Answer
Can you build a curved wall?
Yes; in stone or brick, to the same standard, with proper footings. The setting-out is the craft.
In short
Yes. A curved wall, in stone or brick, is a lovely way to soften a garden and follow a path or border, and we build them to the same standard as straight ones, with proper footings and coping. The setting-out takes more skill, which is part of the craft.
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