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 51
article the gaugeot the track D C. denoted by g, and the distance D B, denoted by dare supposed to be known. The switch angle S is also supposed tobo known, since its sine (Tab. X. 1) is equal to d divided by the lengtu Ori CIRCULAR CURVES. of the switched rail. If, for example, the rail is 18 feet… … Solution. Through die centre E draw E K parallel to the n :track. Draw Ci/and FK perpendicular to E K, and join L F.Then, since E Fis perpendicular io F?,J and FK is perpendicular toFG, the angle E rK = G FIvl = F; and since E B and B H arerespectively perpendicular to A B and A D, the angle E B H…
Railroad engineering · Ferrovias
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