<P> Work on the foundations started on 28 January 1887 . Those for the east and south legs were straightforward , with each leg resting on four 2 m ( 6.6 ft ) concrete slabs , one for each of the principal girders of each leg . The west and north legs , being closer to the river Seine , were more complicated : each slab needed two piles installed by using compressed - air caissons 15 m ( 49 ft ) long and 6 m ( 20 ft ) in diameter driven to a depth of 22 m ( 72 ft ) to support the concrete slabs , which were 6 m ( 20 ft ) thick . Each of these slabs supported a block of limestone with an inclined top to bear a supporting shoe for the ironwork . </P>
<P> Work on the foundations started on 28 January 1887 . Those for the east and south legs were straightforward , with each leg resting on four 2 m ( 6.6 ft ) concrete slabs , one for each of the principal girders of each leg . The west and north legs , being closer to the river Seine , were more complicated : each slab needed two piles installed by using compressed - air caissons 15 m ( 49 ft ) long and 6 m ( 20 ft ) in diameter driven to a depth of 22 m ( 72 ft ) to support the concrete slabs , which were 6 m ( 20 ft ) thick . Each of these slabs supported a block of limestone with an inclined top to bear a supporting shoe for the ironwork . </P>
when did the construction of the eiffel tower start and end
when did the construction of the eiffel tower start and end
28 January 1887
28 January 1887