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Filippo Brunelleschi started in 1420 with the construction of the CUPOLA. The diameter of the inner span (m. 41.50) is close to the maximum limit for any kind of masonry dome. Brunelleschi invented a technique based on his knowledge of the "way of building" of the Romans. The cupola (27,000 tons) was thus built as a self supporting growing form.
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for better quality images: mail@redsimon.info
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