Manual for railroad engineers and engineering students : containing the rules and tables needed for the location, construction, and equipment of railroads as built in the United States (1883)
Vose, George L. (George Leonard), 1831-1910 · Boston : Lee and Shepard · leaf 49
ween the contour, lines must be equal at all partsof the ascent. This equality is effected by causing- the surveyedline to cut the contours at right angles during the first part ofthe ascent, and obliquely as the summit is approached, and thecontours become closer together. In this manner we obtain… … Fig. 14. The effect upon the profile of cutting the contour lines indifferent directions is shown by Figs. 14 and 15. If we connectthe points A and R, upon the plan, Fig. 14, by the straight lineA R, we obtain the profile shown on Fig. 15, by the line A L NM R. If we follow the contour line round…
Railroad engineering
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