International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 247
Gbetween the tangents D\ the radius of the larger curve, /v,and the radius of the smaller curve, r; the given angleB O F oi the second curve, x, and the required angle EGGof the second curve j, we have, as in formula lOO, {R — r) cos X — D cos J R That is, the distance H G, measured rectangularly… … Fig. 363. the P. C. C. backwards on the first curve, i. e., the angle ofthe first curve must be reduced. Example.—A ^ is a 6° curve compounding at B into a 3 curvewhose angle is 43 30, and whose tangent F H i?, 53 ft. within therequired tangent. How far backwards must the P. C. C. be moved ?…
Railroad engineering
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