Field-book for railroad engineers. Containing formulas for laying out curves, determining frog angles, levelling, calculating earth-work, etc., etc., together with tables of radii, ordinates deflections, long chords, magnetic variation, logarithms, logarithmic and natural sines, tangents, etc., etc (1877)
Henck, John Benjamin, 1816-1903 · New York : D. Appleton · leaf 76
78 ProblenB. Having run a curve A B (Jig. 29) of radius li <ndeflection angle Z>, terminating in a tangent B D, to Jind the radius IV ordeflection angle D of a curve A C, that shall terminate in a given paralleltangent CE. … Fig. 29. A K iSolution. Since the radii Z? F and CG are perpendicular to the par-allel tangents CE and B L>, they are parallel, and the angle A GG =Therefore, A C G, the half-supplement of A G C, is equal t«4 4.Fb m CIRCULAR CURVES. A B F, the half-supplement of A F B. Hence A B and B C are in…
Railroad engineering · Ferrovias
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