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
tion angle from A to B; orif^ can beseen from B, the angle DBA may be made equal to BAE. Measure on the tangent (backward or forivard, as the case may be) a dislance A C — B D, and C will be the 7iew tangent point required. For. ifrflbe drawn equal and parallel to A F, we have Fi7 equal and par… … 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.
Railroad engineering · Ferrovias
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