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 102
d IIK = b. The slope of the sides B H or C Kis usually given bythe ratio of the base K Nto the height E N. Suppose, in the presentcase, that KN: E N ^ 3 : 2, and we-have the slope = I. Then ifthe ground were level, as D A E, it is evident that the distance from Fig. 45 … the centre A to the slope stakes at D and E would be yl Z) = A E —M K-\- KN=^b + I c. But as the ground rises from A to Ct!irough a height C G = g, the slope stake must be set farther out adistance E G = ^ g; and as the ground falls from A to B through aheight B F =^ g, the slope stake must be set…
Railroad engineering · Ferrovias
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
