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 57
0.16, and 10.16^-1187 =.008.56. Therefore, nat. cos. {E -\-S) = .99973 — .00856 = .99117 ;whence E-^ S = 1°Z1 15. Subtracting S, we have E = 6° 17 15Next 2 72 = 1187 3.074451 i i?; = 3° 8 37^ sin. 8.7.39106 ^ C= 65.1 ! 813557 38 CIRCULAR CURVES. C. Turnout from Curves. 57. Problem. Given the radius… … Fig. 18. Solution, I. When the turnout is from the inside of the cunrt(fig. 18). Let A G and CF be the rails of the main track, AB theswitch rail, and the arc ^i^the outer rail ot the turnout, crossing theinside rail of the main track sliF. Then, since the angle E FK has itssides perpendicular to…
Railroad engineering · Ferrovias
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