When you put a load on the central beam, a
person sitting in them, the arms of the men and the bodies
of men, shoulders down and go into compression rods. The
chairs represent the piles of granite. Imagine my chairs separated 500 men's
headsas high as the cross of S. Paul (London church, 104 m) arms represented
by steel beams and rods and tubes of 3.5 m in
diameter at the base and you get a good understanding of the
structure. (www.ingenierocivilinfo.com)
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