Friday, 11 January 2013

Eiffel Tower construction :)


Currently, Eiffel Tower is the fifth-tallest structure in France. 
The mass of the total structure of the tower is 7300 tonnes.
There are 1660 steps. 
For the public it is not possible to get to the summit by means of the stairs, elevators are necessary beyond the second platform.
The top of the tower can increase up to 18 centimetres due to thermal expansion of the metal on the side facing the sun.
 The tower also sways to six to seven centimetres due to wind.