All the elements were prepared in Eiffel’s factory in Levallois-Perret, on the outskirts of Paris. Each of the 18,000 pieces used to construct the Tower was specifically designed and calculated, traced out to an accuracy of a tenth of a millimetre and then put together to form new pieces, each measuring around five metres.
"... they were still working on the bolts: workmen with their iron bludgeons, perched on a ledge just a few centimetres wide, took turns at striking the bolts (these in fact were the rivets). One could have taken them for blacksmiths contentedly beating out a rhythm on an anvil in some village forge, except ..."
Conception — Société d'Exploitation de la Tour Eiffel
Iconographie — Parisienne de photographie et Collection tour Eiffel