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 80
B (fig 32) be the first branch of a compound curve^and D its deflection angle, and let it be required to locate the secondbranch AB\ whose deflection angle is Z), from some station BunA B. MISCELLANEOUS PROBLEMS. 61 Let n be tfie number of stations from A to B, and n the number of sta-lions from A… … Fig. 32 rented by V. Then we have F+ F = 180° — BAB. But ifTT be the common tangent at A, we have TA B + T A B = nDJ^ n D = 180° — BAB. Therefore, V-{- V = nD -{• nD.Next in the triangle ABB we have sin. V : sin. V= AB : AB.But A B : A B = n :n, nearly, and sin. V : sin. V = V : V, near- n ly.…
Railroad engineering · Ferrovias
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
