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 63
track parallel tothe main track, as A CB (fig. 20), it will be necessary to determinethe reversing points C and B. These points will be detennined, if wefind the angles A E C and B F C, and the chords A C and CB. 62 Problem. Given the radius D K = R {Jig 20) of the centrtline of the main truck the… … Solution. In the triangle A E K fitrd the angle AEK and the side CROSSINGS ON CURVES. i5 e K For tliis purpose we have AE = R, A K = R — d, and tlicincluded angle E A K =- S. Or, if the frog angle has been previouslycalculated by § GO, the values of A E K and E K are already known.*Find in the…
Railroad engineering · Ferrovias
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