How Brunelleschi Engineered Florence’s Iconic Dome

Nobody who trav­els to Flo­rence may help see­ing the dome of the Cathe­dral of Saint Mary of the Flower. That’s true not simply due to its sheer loom­ing phys­i­cal pres­ence over the remainder of town, but in addition due to its impor­tance as an obtain­ment in var­i­ous sorts of his­to­ry, from that of engi­neer­ing to archi­tec­ture to reli­gion. Its sto­ry is informed by artwork his­to­ri­ans Beth Har­ris and Steven Zuck­er in their new Smarthis­to­ry video above, which begins within the yr 1417. On the time, Zuck­er explains, Flo­rence had a “enormous” prob­lem: the bottom­work for its ambi­tious­ly massive cathe­dral had been laid a cen­tu­ry earlier than, however no person knew learn how to construct the dome for which its plans known as.

The assump­tion, says Har­ris, was that “by the point they needed to construct it, they’d fig­ure out learn how to do it,” a reflec­tion of each the extra relaxed pace of con­struc­tion within the fif­teenth cen­tu­ry, in addition to a tempo of inno­va­tion that should have felt speedy­ly on the rise.

Such a struc­ture had­n’t been constructed since the Pan­theon in antiq­ui­ty, the out­do­ing of which might, no less than within the­o­ry, con­agency Florence’s recep­tion of the torch of civ­i­liza­tion from Rome. However not one of the tra­di­tion­al tech­niques may sup­port a dome of this measurement, atop so excessive a tow­er, dur­ing con­struc­tion. Sal­va­tion even­tu­al­ly got here within the unpromis­ing type of Fil­ip­po Brunelleschi, an archi­tect, sculp­tor, and gold­smith with­out a lot of a résumé — however, cru­cial­ly, with a deep underneath­stand­ing of the Pan­theon.

“Brunelleschi actual­ized that hemi­spher­i­cal domes func­tion in a self-sup­port­ing man­ner in the event that they’re con­struct­ed out of self-sup­port­ing con­cen­tric cir­cles,” Zuck­er says, and his chal­lenge was to make use of that knowl­edge to construct an octag­o­nal dome. This concerned design­ing two domes, a thick inside one cov­ered by a skinny out­er one. Drop €30 on a tick­et, and you’ll ascend the steps by way of the inter-dome hole your­self. There the partitions reveal the her­ring­bone brick pat­tern that stored the struc­ture sta­ble; at a larg­er scale, these bricks kind struc­tur­al ele­ments, very like over­sized ver­sions of the stones used to construct arch­es since time immemo­r­i­al. Regard­ing nearly any pic­ture of Flo­rence, your eye might go straight to the cathe­dral, drawn each to the dome and to the splen­dor of its oth­er era-mix­ing archi­tec­tur­al fea­tures. However solely from the within are you able to underneath­stand the way it all works.

Relat­ed con­tent:

How the World’s Greatest Dome Was Constructed: The Sto­ry of Fil­ip­po Brunelleschi and the Duo­mo in Flo­rence

How Fil­ip­po Brunelleschi, Untrained in Archi­tec­ture or Engi­neer­ing, Constructed the World’s Largest Dome on the Daybreak of the Renais­sance

The Beau­ty & Inge­nu­ity of the Pan­theon, Historic Rome’s Finest-Pre­served Mon­u­ment: An Intro­duc­tion

Why Hasn’t the Pantheon’s Dome Col­lapsed?: How the Romans Engi­neered the Dome to Final 19 Cen­turies and Rely­ing

How Design­ing Construct­ings Upside-Down Rev­o­lu­tion­ized Archi­tec­ture, Mak­ing Pos­si­ble St. Paul’s Cathe­dral, Sagra­da Família & Extra

His­to­ri­an Solutions Burn­ing Ques­tions About The Renais­sance

Primarily based in Seoul, Col­in Marshall writes and broad­casts on cities, lan­guage, and cul­ture. He’s the writer of the newslet­ter Books on Cities in addition to the books 한국 요약 금지 (No Sum­ma­riz­ing Korea) and Kore­an Newtro. Fol­low him on the social internet­work for­mer­ly often called Twit­ter at @colinmarshall.