. Railway maintenance engineering, with notes on construction . metaled bed)C=3; for gravel ballast (with metaled bed) (7 = 8; for ballast of smallstones and scorse C = (c) The sinking observed under a load in motion, at speeds varyingfrom 40 to 60 kilometers ( to miles) per hour, was not muchgreater than the sinking observed under the same load in a state of repose. It appears that under the tie at the rail a depression inthe ballast is formed, and that even under a comparatively * Deformations of Railroad Tracks, 1907. The Railroad Gazette, NewYork. t P ia kilograms per square
. Railway maintenance engineering, with notes on construction . metaled bed)C=3; for gravel ballast (with metaled bed) (7 = 8; for ballast of smallstones and scorse C = (c) The sinking observed under a load in motion, at speeds varyingfrom 40 to 60 kilometers ( to miles) per hour, was not muchgreater than the sinking observed under the same load in a state of repose. It appears that under the tie at the rail a depression inthe ballast is formed, and that even under a comparatively * Deformations of Railroad Tracks, 1907. The Railroad Gazette, NewYork. t P ia kilograms per square centimeter; Y in centimeters. TRACK AND RIGHT OF WAY 201 light pressure the tie deflects to the depth of this would seem to represent most of the elastic depression, andindicate that there is a sort of spontaneous tamping of the bal-last by the tie near the rail bearing which eventually results inthe permanent displacement of the ballast, and consequent roughriding of the track. Fence 55high k. Post 5 round-.^ ^Pitch -^, -V Posts roun d-~^ ^:^. ;;, -dpo - - -B- — -■^■Intermediate Posts 8long not less than 3in Ground. Corner or End Post tobenotless than 4 \ in Ground Fig. 115.—Woven Wire Right of Way Fence. (Standard recommended bythe New York Central Lines Maint. of Way Committee.)
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
