Washington Monument

1. Washington Monument By Navjot, Harleen, Martha, Torijean, Roy

2. History • The Washington Monument is a memorial to George Washington, first President of the United States. • Cornerstone laid: July 4, 1848. • Capstone set: December 6, 1884. • Dedicated: February 21, 1885. • Officially opened to the public: October 9, 1888. • Designed by Robert Mills. • Total cost of monument: $1,187,710.

3. The Monument • Exterior: White marble primarily from Baltimore, Maryland; a few blocks from Sheffield, Massachusetts. • Interior: Granite from Maine. • Construction • Phase One (1848 - 1858): To the 152 foot level (46.33 meters), under the direction of Superintendent William Daugherty. • Phase Two (1878 - 1888): Work completed by the U.S. Army Corps of Engineers, commanded by Lt.Col. Thomas L. Casey.

5. Geometric Analysis • Dimensions • Height: 555 feet, 5 1/8 inches (169.29 meters). • Width at base of monument:55 feet 1 1 ½ inches • Width at top of shaft: 34 feet 5 ½ inches • Total weight of monument: 90,854 tons (82,421.4 metric tons). • Total number of blocks in monument: 36,491.

6. The Monument • Pyramidion weight: 300 tons • Capstone weight: 3300 pounds

7. The Monument • Interior • Number of memorial stones in stairwell: 198. • Present elevator installed: 1998. • Present elevator cab installed: 2001. • Number of steps in stairwell: 896.

8. The Monument

9. Bibliography • http://www.nps.gov/nama/mortar/mortar.htm#wamo • http://www.nps.gov/wamo/ • http://www.cr.nps.gov/nr/travel/wash/dc72.htm • http://www.greatbuildings.com/places/dc.html

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