. Railroad construction, theory and practice; a text-book for the use of students in colleges and technical schools . Fig. 120. Fig. 121. 276. Rail wear on curves. On curves the maximum rail wearoccurs on the inner side of the head of the outer rail, giving aworn form somewhat as shown in Fig. 121. The dotted Hneshows the naturfe and progress of the rail wear on the inner railof a curve. Since the pressure on the outer rail is somewhatlateral rather than vertical, the ^ flow does not take place tothe same extent, if at all, on the outside, and whatever flow wouldtake place on the inside is imm
. Railroad construction, theory and practice; a text-book for the use of students in colleges and technical schools . Fig. 120. Fig. 121. 276. Rail wear on curves. On curves the maximum rail wearoccurs on the inner side of the head of the outer rail, giving aworn form somewhat as shown in Fig. 121. The dotted Hneshows the naturfe and progress of the rail wear on the inner railof a curve. Since the pressure on the outer rail is somewhatlateral rather than vertical, the ^ flow does not take place tothe same extent, if at all, on the outside, and whatever flow wouldtake place on the inside is immediately worn off by the wheel- 312 RAILROAD CONSTRUCTION. § 277. flange. Unlike the wear on tangents, the wear on curves is at agreater rate as the rail becomes more worn. The inside rail on curves wears chiefly on top, the same ason a tangent, except that the wear is much greater owing to thelongitudinal slipping of the wheels on the rail, and the lateralslipping that must occur when a rigid four-wheeled truck isguided around a curve. The outside rail is subjected to agreater or less proportion of the longitu
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