Roads And Rails And Their Sequences Physical And Moral
Roads And Rails And Their Sequences Physical And Moral
William Bridges Adams
The book Roads And Rails And Their Sequences Physical And Moral was written by author William Bridges Adams Here you can read free online of Roads And Rails And Their Sequences Physical And Moral book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Roads And Rails And Their Sequences Physical And Moral a good or bad book?
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There is no advantage in this mode of construction, and there is considerable ugli- ness. In the Saltash bridge suspension-chains are attached from the ends of the bow, but this complicated arrangement has no advantage over the Britannia tube other than that the insides of the tubes are easily accessible to re- pair, and the trains run with less noise, and the blows of the wheels are not directly upon the tubes. The Newark Dyke Bridge is a sample of a straight beam with the top compression-bar ...connected to the lower tension-bar by a series of diagonal struts and ties. The strength of 142 ROADS AND RAILS. this beam depends upon the power of the chains to resist tension and the power of the top compression-bar, and also of the diagonals to resist buckling. The tendency to buckle being in propor- tion to the length of the bar, it follows that the stiffness and weight must increase in pro- portion to the length. Thus on a bridge of this construction, a span of 258 ft. Will re- quire diagonals about 24 ft.
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