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Explain the structural problem of the dome at the Florentine Cathedral, how it was solved, and name the architect who invented the solution.
The drum was left open to the elements, with no dome. The drum was too high up, too wide across for easy addition of a dome. Couldn’t use centering like normal arches, would likely collapse. Filippo Brunelleschi invented a double-shell dome that supported itself and took a more cone-like shape, which distributed the weight rather than letting it collapse the dome in on itself.