Capitol dome[edit]
Main article: United States Capitol dome
The 1850 expansion more than doubled the length of the Capitol, dwarfing the original, timber-framed, copper-sheeted, low dome of 1818, designed by Charles Bullfinch and no longer in proportion with the increased size of the building. In 1855, the decision was made to tear it down and replace it with the "wedding-cake style" cast-iron dome that stands today. Also designed by Thomas U. Walter, the new dome would stand three times the height of the original dome and 100 feet (30 m) in diameter, yet had to be supported on the existing masonry piers. Like Mansart's dome at "Les Invalides" (which he had visited in 1838),Walter's dome is double, with a large oculus in the inner dome, through which is seen "The Apotheosis of Washington" painted on a shell suspended from the supporting ribs, which also support the visible exterior structure and the tholos that supports "Freedom", a colossal statue that was raised to the top of the dome in 1863. This statue was cast by a slave named Philip Reid. The weight of the cast iron for the dome has been published as 8,909,200 pounds (4,041,100 kg).
No comments:
Post a Comment