. The American railway; its construction, development, management, and appliances . tilever, but onewhich in principle would not differ from the actual cantileverbridges. This is another American invention, although it has beendeveloped by British engineers—Messrs. Fowler & Baker—in theirhuoe brido-e now buildinof across the Forth, in Scotland, of a sizewhich dwarfs everything hitherto done in this country, the Brook-lyn bridge not excepted. The first design of which we have any record was that of abridge planned by Thomas Pope, a ship carpenter of New York,who, in 1810, published a book givin
. The American railway; its construction, development, management, and appliances . tilever, but onewhich in principle would not differ from the actual cantileverbridges. This is another American invention, although it has beendeveloped by British engineers—Messrs. Fowler & Baker—in theirhuoe brido-e now buildinof across the Forth, in Scotland, of a sizewhich dwarfs everything hitherto done in this country, the Brook-lyn bridge not excepted. The first design of which we have any record was that of abridge planned by Thomas Pope, a ship carpenter of New York,who, in 1810, published a book giving his designs for an archedbridge of timber across the North River at Castle Point, of 2,400feet span. Mr. Pope called this an arch, but his description clearlyshows it to have been what we now call a cantilever. As was thefashion of the day, he indulged in a poetical description : Like half a Rainbow rising on yon shore,While its twin partner spans the semi oer,And makes a perfect whole that need not partTill time has furnishd us a nobler art. THE BUILDING OF A View of Thomas Popes Proposed Cantilever (1810). The first railway cantilever bridge in the world was built bythe late C. Shaler Smith, , one of our most accomplishedbridge engineers. This was a bridge over the deep gorge of theKentucky River.^^ The next was a bridge on the CanadianPacific, in British Columbia, designed by C. C. Schneider, very similar bridge is that over the Niagara River, designedby the same engineer in conjunction with Messrs. Field & Hayes,Civil Engineers. This bridge was the first to receive the distinc-tive name of cantilever. The new bridge at Poughkeepsie has three of these cantilevers,connected by two fixed spans, as shown in the illustration (pg. 36).The fixed spans have horizontal lower chords, and reall}^ extendbeyond each pier and up the inclined portions, to where the bot-tom chord of the cantilever is horizontal. At these points thejunctions between the spans are m
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