. Handbook of railroad construction; for the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States .. . 180 HANDBOOK OP RAILROAD CONSTRUCTION. Fig 83. ought to be permanently used. A pile bridge upon a curvemay need stronger lateral bracing upon the convex, thanupon the concave side of the curve; and also in runningwater; in which cases, such a form as fig. 81 may do goodservice. (For pile-driving, and for proper dimensions, see ) TRESTLING. 207. Trestling is
. Handbook of railroad construction; for the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States .. . 180 HANDBOOK OP RAILROAD CONSTRUCTION. Fig 83. ought to be permanently used. A pile bridge upon a curvemay need stronger lateral bracing upon the convex, thanupon the concave side of the curve; and also in runningwater; in which cases, such a form as fig. 81 may do goodservice. (For pile-driving, and for proper dimensions, see ) TRESTLING. 207. Trestling is a system of vertical posts, and of capsand braces, used both for temporary and for permanentw^orks; temporarily to pass a road over low ground whereembankments are to be made, and permanently over deep,dry gorges, where the amount of earthwork or masonrywould be too great. American railroadsshow all sizes andarrangements of trest-ling, from twenty totwo hundred feet 83 and 84 showtemporary works, andfig. 85 permanent. The main part ofthe design in trestlesis to connect the several postsand caps by well-formed tri-angles ; the equilateral beingthe best. The finest example of thissystem of building is the Gene-see
Size: 983px × 2541px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, booksubjectrailroadsdesignandco
