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(DOWNLOAD) "Scientific American Supplement, No. 586, March 26, 1887" by Various Authors # Book PDF Kindle ePub Free

Scientific American Supplement, No. 586, March 26, 1887

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eBook details

  • Title: Scientific American Supplement, No. 586, March 26, 1887
  • Author : Various Authors
  • Release Date : January 01, 2012
  • Genre: Antiques & Collectibles,Books,Lifestyle & Home,
  • Pages : * pages
  • Size : 1742 KB

Description

The viaduct is composed of seven semicircular arches, each end arch being built of ashlar masonry, and of 6 meters (19 ft. 8 in. ) diameter; five intermediate arches, 15 meters (49 ft. 2 in. ) in diameter, are of iron. The four central piers are of iron erected on pillars of ashlar masonry. The metallic part of this viaduct is 80 meters (262 ft. 6 in. ) long, and is constructed in the following manner: The arches, and the longitudinal girders which they support, are made of two Barlow rails riveted together, with an iron plate ½ inch thick placed between them. The spandrels are formed of uprights and diagonals, the former being made of four angle-irons, and the latter of one angle-iron.


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