. 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 .. . uctures as bridge abutments with wings. A rightA rightA skewA skewA rightA rightA skewA skew bridge on a level tangent,bridge on a level curve,bridge on a level tangent,a level curve,an inclined tangent,an inclined curve. bridge on bridge on bridge on bridge on an inclined tangent, bridge on an inclined curve. And these eight cases Mill vary again a
. 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 .. . uctures as bridge abutments with wings. A rightA rightA skewA skewA rightA rightA skewA skew bridge on a level tangent,bridge on a level curve,bridge on a level tangent,a level curve,an inclined tangent,an inclined curve. bridge on bridge on bridge on bridge on an inclined tangent, bridge on an inclined curve. And these eight cases Mill vary again according to the nat-ural surface of the ground, whether horizontal, or inclinedtransversely. 96. The general position of wing walls and general formof the line inclosing the base of the bridge, is shown fromfig. 31 to fig. 38. Fig. 31 represents case one. The points Fig. 31. A, B, C, D, are fixed by squares from the centre line atE F, G H. 92 HANDBOOK OF RAILROAD CONSTRUCTION. Fig. 32 represents case two. The wings 3 c, 4 ^, must Fig. 32. evidently have a different inclination from A 1, B 2. Thepoints A, B, c, c?, 1, 2, 3,. 4, as before, are laid off by squares from a tangent to the curve. Fig. 33 explains itself. Fig. Fig. 34, case five. Here the wings A1, C 4, are the Fig. T4. LAYING OUT WORK. 93 same, as also B 2, D 3, the former being longer, on accountof the greater depth of the fill. Fig. 35, case seven. Here each wing is peculiar; the 35.
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectrailroadsdesignandco
