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 91
int. 93. Problem. To find the radius of curvature at certain stations on a parabola. Solution. Let AEB (fig. 41) be any parabola, and let it be re-quired to find the radii of curvature at a certain number of stations 72 PARABOLIC CURVES. fron. A to E. Tliese stations must be selected at regular… … of division. Thus, if n — 4, as in the figure, divide CD into fourequal parts, and draw A F, A E, and A G. Let A D = c^ A F = CiA E = C2, A G — C3, and A C = T. Denote, moreover, C D hy dand the area of the triangle A CB hy A. Then the respective radiifor the points .£,1,2, 3, and A will be R = 2,…
Railroad engineering · Ferrovias
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
