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 77
D C B C from D C, we have B C =^ ^-^^ j^^^ (Tab. X. 9), and the angle DBC = ABK= BAK, the total deflection from .4 to B. Then the triangles AFBandAG C give A B : AC = BF: C G,oy c : c = R:R; ,.R = -R.c 50 50 Sub- To find Z), we have (§ 10) /vl = ^^^, , and R = ^^^ -sdtuting these values in the… … Fig. 30 Solution. From 0, the centre of the curve, draw the perpendicularOE. Then the similar triangles QBE and BCD give B 0 : B E^ BC: CD.orR:hBC=E C: CD. Hence 7? = BC^2 CD MISCELLANEOUS PROBLEMS. 59 This problem serves to find the radius of a curve on a track alreadylaid. For if from any point C…
Railroad engineering · Ferrovias
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-107-267.webp)
