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How Filippo Brunelleschi, Untrained in Architecture or Engineering, Built the World’s Largest Dome at the Dawn of the Renaissance

Sent back in time 600 years and tasked with building the world’s largest dome, how would most of us fare? Most of us, of course, are not trained architects or engineers, but then, neither was Filippo Brunelleschi. Known at the time as a goldsmith, Brunelleschi ended up winning the commission to build just such a colossal dome atop Florence’s Cattedrale di Santa Maria del Fiore, which itself had already been under construction for well over a century. The year was 1418, the dawn of the Italian Renaissance, but a break with medieval building styles had already been made, not least in the rejection of the kind of flying buttresses that had held up the stone ceilings of previous cathedrals. Brunelleschi had thus not just to build an unprecedentedly large dome, in accordance with a design drawn up 122 years earlier, but also to come up with the technology required to do so.

“He invented an ox-driven hoist that brought the tremendously heavy stones up to the level of construction,” architect David Wildman tells HowStuffWorks. Noticing that “marble for the project was being damaged as it was unloaded off of boats,” he also “invented an amphibious boat that could be used on land to transport the large pieces of marble to the cathedral.”

These and other new devices were employed in service of an ingenious structure using not just one dome but two, the smaller inner one reinforced with hoops of stone and chain. Built in brick — the formula for the concrete used in the Pantheon having been lost, like so much ancient Roman knowledge — the dome took sixteen years in total, which constituted the final stage of the Cattedrale di Santa Maria del Fiore’s generations-long construction.

Brunelleschi’s masterpiece, still the largest masonry dome in the world, has yet to quite yield all of its secrets: “There is still some mystery as to how all of the components of the dome connect with each other,” as Wildman puts it, thanks to Brunelleschi’s vigilance about concealing the nature of his techniques throughout the project. But you can see some of the current theories visualized (and, in a shamelessly fake Italian accent, hear them explained) in the National Geographic video at the top of the post. However he did it, Brunelleschi ensured that every part of his structure fit together perfectly — and that it would hold up six centuries later, when we can look at it and see not just an impressive church, but the beginning of the Renaissance itself.

Related Content:

How to Build Leonardo da Vinci’s Ingenious Self-Supporting Bridge: Renaissance Innovations You Can Still Enjoy Today

The Life & Times of Buckminster Fuller’s Geodesic Dome: A Documentary

The History of Western Architecture: A Free Course Moving from Ancient Greece to Rococo

Free Course: An Introduction to the Art of the Italian Renaissance

The Wine Windows of Renaissance Florence Dispense Wine Safely Again During COVID-19

Based in Seoul, Colin Marshall writes and broadcasts on cities, language, and culture. His projects include the Substack newsletter Books on Cities, the book The Stateless City: a Walk through 21st-Century Los Angeles and the video series The City in Cinema. Follow him on Twitter at @colinmarshall or on Facebook.

How Filippo Brunelleschi, Untrained in Architecture or Engineering, Built the World’s Largest Dome at the Dawn of the Renaissance is a post from: Open Culture. Follow us on Facebook, Twitter, and Google Plus, or get our Daily Email. And don't miss our big collections of Free Online Courses, Free Online Movies, Free eBooks, Free Audio Books, Free Foreign Language Lessons, and MOOCs.



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