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Brunelleschi worked on the dome of catherdral in Florence in the 15th century. Construction of the dome began in 1420. He used an elevated drum with 8 windows to raise the dome allowing more space. This octagonal drum carries 8 shells, in which empty spaces were left inside each of the shells to lighten the massive structure. The dome had 8 major ribs and 16 minor. The ribs are not intended to provide structural support. It had a painted profile and a tension ring. To solve the problem of cracking Brunelleschi designed a lantern on top, but this was not completed until after his death. The dome also had a tile exterior, which were specially designed for easy assembly and maintenance, and the ribs were done in marble. The dome was double shelled. Michaelangelo extended Brunelleschi’s dome in constructing the dome on St. Peter’s Basilica in the 16th century in Rome. He used 4 columns to support the dome and it was also elevated on a drum of windows with a lantern at the top and a pointed profile.
Approximate Word count = 618
Approximate Pages = 2.5
(250 words per page double spaced)
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