The drawing below is from Gustave Eiffel's book describing the tower that bears his name. There are 53 of them in total.
XXXIV. the resistance of the large beams of the first floor. Pressure on the foundation floor of the batteries
There is not much more to say than what the title says about this board. It describes the resistance of the large first-floor beam and the ground pressure of each pile, in tables of numbers and diagrams. It is like the two previous boards, a set of complex calculations.
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