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Born in Florence in 1377, Brunelleschi, like his peers Ghiberti and Donatello,was apprenticed to a goldsmith, Benincasa Lotti. They worked amidst the slums of the Santa Croce quarter. It was there that young Brunelleschi learned the skillsof mounting, engraving and embossing. He also studied the science of motion, using wheels, gears, cogs and weights.
In 1401, the young craftsman entered a competition todesign new bronze doors for the city's baptistry. Already paranoid, Brunelleschi hid his work away, and watched as his rival, Ghiberti, the lesser technician, wooed the judgesand won the commission. Legend has it that Brunelleschi stormed out of the competition when he was refused complete control, and quit the city of Florence altogether.
Brunelleschi spent the next 10-years living rough in Rome with his good friend, the sculptor Donatello, studying the ruins of the great city. He was especially interestedin Roman engineering and the use of fixed proportion and Roman vaults. The construction of the Pantheon - especially the dome - fascinated him. Brunelleschi dedicated himselfto understanding how it stayed up, which included pouring Roman concrete over a massive timber frame.
When Brunelleschi returned to Florence, a new prize was on offer, the magnificent Cathedral desperately needed a dome. Whilst no one had ever made a self-supporting dome before, Brunelleschi was confident that he could solve the problem. But first he had to showcase his talents.
In 1419, the Silk Merchants Guild - which included the Medici - commissioned the construction of a state orphanage. Brunelleschi worked hard to win the tender. He had alreadyworked for the Medici, redesigning their parish church, San Lorenzo, along classical lines. Now, with these new buildings, a revolution began. Soon enormous Roman capitals andpillars, monumental windows and carved stones appeared, making this the first time true pillars were used for structural support since Ancient Roman times.
Brunelleschi was not satisfied. He hungered for the greatest prize of all, the Cathedral. The authorities demanded a demonstration. The temperamental architect displayed hisstrategy by standing an egg upright, breaking its bottom. The Cathedral authorities were unsure but had little choice but to trust him. To succeed, Brunelleschi needed to rewritethe rules of Western architecture and there was no guarantee of success.
Brunelleschi knew that there was not enough timber in Tuscany to build a scaffold inside the Cathedral, and the recipe for concrete had been lost since the fall of Rome.Brunelleschi instead came up with an ingenious and completely original theory. His plans showed an inner hemispherical dome within Florence cathedral's octagonal drum.A second, ovoid brick dome was to be placed on top, and nine sandstone rings would then hold the structure together, like a barrel. To raise the bricks and sandstone beamsseveral hundred feet in the air, Brunelleschi invented a fast and efficient hoist with the world's first reverse gear, allowing an ox to raise or lower a load at the flick of a switch.
Brunelleschi had no formal training. The ideas he brought to building sites were completely new. Every day, he ensured workers remained sober by providing their lunch and watering downthe wine. A safety net prevented workers from falling to their deaths, a chiming clock regulated their working hours and Brunelleschi had a canteen half way up the dome. His methods seemed to work.Only three deaths were recorded during a 16-year construction period.
As the magnificent dome neared completion, Brunelleschi indulged in other interests. In 1434, he held a public display, sketching the outline of the nearby baptistery. Using a novel technique, involving reflective material and pinholes, Brunelleschi produced an exact isometric simulation of the octagonal building.Brunelleschi had reproduced a three-dimensional object in two dimensions. He had invented perspective.
With the dome complete, Cosimo de'Medici invited the Pope himself to consecrate the finished Cathedral on Easter Sunday, 1436. The dome towered majestically over the city of Florence,a triumph for the Florentine people and the city's most powerful family.
Weighing 37,000 tons and using more than 4,000,000 bricks, Brunelleschi's dome was the greatest architectural feat in the Western world.
One man alone had realized his ambition. When Brunelleschi died in 1446, he was buried beneath his towering achievement, where he remains to this day.He was the first engineer of the Renaisssance.
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