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Scientific American, Vol. 99, No. 23 (December 1908) (1908)

leaf 10

An illustration from Scientific American, Vol. 99, No. 23 (December 1908), 1908, leaf 10
ach side of the river. The borings of a mass of solid masonry, were constructed on either cantilever extensions of the floor beams. The lack for the Manhattan Bridge piers showed the surface of shore, at a distance of 930 feet from the towers, and the underlying rock to be fairly level, and hence… … late years, however, the bridge has three longitudinal sections, and in been subjected to careful and con- this chamber the excavation was Each cable consists of 37 strands in each of which is 250 wires. tinued scrutiny by competent engi- done by a large army of "ground neers; and, so long as this…

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