International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 264
ations of the vertical curve will be: Ans. Station. Elevation ofGrade. A 120.000 ft. A/ 121.033 ft. A/ 121.733 ft. E 122.100 ft. Station. Elevation ofGrade. O 122.134 ft. A 121.834 ft. B 121.201 ft. Example 2.—Let A C, Fig. 376, be a descending grade of 1.0 ft. perstation, and C B an ascending… … Fig. 376. 9; — e <?= —1.0 —(5) these values in formula 101,rt= ^ f , we have 4 n -1.5 8 b g- rt = -1.0-(- .1875) = Ans. - ^-3rt = -1.0-(- .5625) =^4^-5rt; =-1.0-(- .9375) = g -7^? = -1.0-(-1.3125) = -1.0+ .1875 =-.8125 ft.-1.0-h .5625 = -.4375 ft.-1.0+ .9375 = -.0625 ft.-1.0 + 1.3125= + .3125…
Railroad engineering
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