It doesn’t
The weight is taken by the steel framing you can’t see
The outside is just a weatherproof skin
The highest you can build where the next floor is directly supported by the floor below (stone or brick) is about 8-12 stories.
Edit:
[https://en.wikipedia.org/wiki/Monadnock_Building](https://en.wikipedia.org/wiki/monadnock_building)
Has 16 stories and the walls are 6 feet wide at the bottom
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