International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 186
mbers. Dotted radial lines are drawnfrom the center of each curve to its P. C. and P. T. Onone of these radial lines the length of the radius of the curveis written, and the amount of the central angle written with-in the radial lines. The student will need no further direc-tions to enable him to… … Fig. 336. is to enable the engineer to readily select a curve whichshall best fit the ground lying between tangents, as shownin the topographical map. They are commonly made ofpasteboard, each piece containing arcs of two different radii,the degrees of curvature of which, together with the scale…
Railroad engineering
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