To reach the height of over 300 meters, two basic elements are involved. The first element needed is a base, which is a very sturdy stool atop of 4 main pillars with another level attached on top. The second element is a tower attached firmly on top. The bases atop of four pillars helps the tower remain stabilized against the the wind.

Bonding the four main pillars onto the first floor was the most difficult in constructing the Eiffel Tower. The four pillars were placed 80 meters apart and set on a slant towards each other. Each pillar had to be propped up with millimeter precision fifty meters above the ground.

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Building the next set of pillars on the first floor was less difficult and erecting the tower was even less difficult, apart from working at the high heights.

The assembly of the supports for the Eiffel Tower began on July 1, 1887, and was completed 22 months later. Each of the 18,000 pieces used to build the tower was carefully designed and calculated to the accuracy of a tenth of a millimeter in the factory at Levallois-Perret where Eiffel's company was located. The pieces were then put together in pieces of 5 meters each between 300 workers led by highly experienced professionals. Bonding the four main pillars onto the first floor was the most difficult in constructing the Eiffel Tower. The four pillars were placed 80 meters apart and set on a slant towards each other. Each pillar had to be propped up with millimeter precision fifty meters above the ground.

Building the next set of pillars on the first floor was less difficult and erecting the tower was even less difficult, apart from working at the high heights. All of the pieces made of metal are held together by rivets. This method was very well refined by the time of the construction of the tower.

March 15th, 1888		September 15th, 1888		December 26th, 1888		March 12th, 1889

The Eiffel Tower was finally completed on March 31st, 1889. This tower demonstrated exact precision and was the tallest structure at the time.