Saturday, October 10, 2009

Leaning tower of Pisa, Italy


Official Name: TORRE PENDENTE DI PISA
Function: Bell Tower (Campanile)
Original Architect: Bonanno Pisano
Architect who realized that the Leaning Tower could not be straightened:
Tomasso di Andrea da Pontedera (1275)
Years Built: 1173-1350

Latitude: 43.7167 (43° 43' 0" N)
Longitude: 10.3833 (10° 22' 60" E)
Elevation of Piazza dei Miracoli: About 6 feet, (2 meters) (DMS)

First Construction Stop: 1178 (War with Firenze)
Year in which lean became obvious: 1178 (Third Story)
Height at which lean became obvious: 10.6 meters (35 ft.)
Level at which Tower Straightens to North: 5 (About 110 meters)
Second Construction Stop: 1185 (War with Firenze)
Later Construction Stop: 1284 (War with Genoa, Major Sea Battle Defeat)

Height: 55.863 meters (185 feet). 8 stories.
Outer Diameter of Base: 15.484 meters
Inner Diameter of Base: 7.368 meters

Weight: 14,700 metric tons
Thickness of Walls at the Base: 8 feet
Direction of Lean: 1173-1250 North, 1272-1997 South
Lean: 1.63 meters (1360)
Lean: 1.43 meters (1372)
Lean: 3.77 meters (1550)
Lean: 4.75 meters (1817)
Lean: 4.8 meters (1935)
Lean: 5.2 meters (1997)