How did they put the capstone on the Washington Monument?

On a breezy December 6, 1884, Lt. Col. Casey supervised as the 3,300-pound capstone was brought out through one of the windows, hoisted to the scaffolding at the dizzying tip of the monument, and set in place. Casey then placed the 8.9-inch aluminum tip atop the capstone to the cheers of the crowd below.



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5 Things You Might Not Know About the Washington Monument
  • Plans for the monument began even before Washington was elected president. ...
  • The original design for the monument was much different than what ended up being built. ...
  • The monument was once the site of a hostage situation. ...
  • The monument has survived an earthquake.


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Built in the shape of an Egyptian obelisk, evoking the timelessness of ancient civilizations, the Washington Monument embodies the awe, respect, and gratitude the nation felt for its most essential Founding Father. When completed, the Washington Monument was the tallest building in the world at 555 feet, 5-1/8 inches.

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The two sections closely resembled each other at first, but time, wind, rain, and erosion have caused the marble sections to weather differently, thereby producing the difference in color. A third type of marble is also visible at the dividing line between the two main phases of construction.

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The nonstop elevator ascent to the top floor 500 feet above the ground takes approximately 70 seconds. Once at the observation deck, you are free to explore at your leisure. The 500' foot observation deck has windows on all four sides.

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The Monument is an engineering marvel. The Washington Post recently pointed out an interesting fact in an on-going debate about the Monument as the world's tallest free-standing masonry structure. The Monument's marble blocks are held together by just gravity and friction, and no mortar was used in the process.

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August 2, 1876 Congress appropriates $2 million in federal funds to complete the construction of the Washington Monument. The public funding is contingent upon the transfer of ownership of the monument from The Washington National Monument Society to the federal government.

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Thereafter in the actual implementation of the Monument's construction the engineers responsible for it's construction apparently observed that the formal nexus originally intended was too marshy and the soil there presumably not competent to support the weight of the massive structure proposed.

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In fact, there are three buildings in the District of Columbia that are taller: the Basilica, the Old Post Office Pavilion, and the Washington National Cathedral. But if you expand your definition of “building” to include monuments, the Washington Monument towers over the rest as the tallest building in DC.

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While the honor of the world's tallest obelisk belongs to the Washington Monument (standing 555 feet, or 169 meters, tall), Long believes the most famous obelisk on the planet is likely the Vatican Obelisk at the center of Rome's St. Peter's Square.

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The Washington Monument Looks Like an Obelisk Because of Egyptomania. In a technical sense, the Washington Monument isn't an obelisk, because it isn't made from a single piece of stone. That fact makes it no less impressive. Stretching 555 feet in the air, the Washington Monument is the tallest thing in the city.

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