International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 244
shall terminate in a tangent B Cparallel to B C and at a fixed distance from it. The angle B B D ^ /, the angle of intersection of thetangents. We have sin /) /) D — -rr-n, whence B B = —.—r-B B sm / B B ■= O O =^ A A\ the required distance to move theP. C. of the curve either backwards or… … Fig. 361. tangent. Let the intersection angle be 68° and the distance 40B D = 40 feet. Sin 68° = .92718, whence A A ^ _Z1_ :,^ .!);>? 18 43.14 feet. That is, the P. C. of the required curve must be movedbackwards 43.14 feet from the P. C. of the given curve. 1423. Problem II.—To change the point…
Railroad engineering
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
