. Baltimore and Ohio employees magazine . rail cutting and of excessiv(itam|)ing nnich longei- than ties of softwood. It has IhmU observed that theseties which are most durable undei* thenu^chanical wear of the rail alsolast longer under the wear ofballast; for instance, white oak, black walnut,maple and IxhcIi are moressuitable than yellow pine, fir,catalpa, cedar and redwood. Here it is important to mentionthe extent to which some formsof ballast increase the abrasiveaction of the rail upon the slag, gravel, cinders,chatts and other forms of ballastcarr^ing fine g
. Baltimore and Ohio employees magazine . rail cutting and of excessiv(itam|)ing nnich longei- than ties of softwood. It has IhmU observed that theseties which are most durable undei* thenu^chanical wear of the rail alsolast longer under the wear ofballast; for instance, white oak, black walnut,maple and IxhcIi are moressuitable than yellow pine, fir,catalpa, cedar and redwood. Here it is important to mentionthe extent to which some formsof ballast increase the abrasiveaction of the rail upon the slag, gravel, cinders,chatts and other forms of ballastcarr^ing fine gritty particles con-trilnite largely to the rapidity ofthe abrasive action between theg rail and the tie or between the tie plate and the tie, thus greatly ac-celerating the mechanical wearing awayof the wood. It has been observed thatthe cutting of the rail into the tie is muchgreater where the fine ballast is used thanwhere coarse hard ballast is used. Thistrouble has been largely overcome by useof flangcMl bottom plates which IxM-omc. FIGURE 5 Tie badly rail cut in fine gravel haliast end)edded in the. tie, and by plates fast-ened directly to the tie by lag screws in-dependcMit of the rail spiking, thus reduc-ing the movement between the plate andtie to a mininunn. However, many tiesare removed from track each v(vir because 38 THE BALTIMORE AND OHIO EMPLOYES MAGAZINE of deterioration from rail wear and a largeamount of this deterioration can be as-signed to the effect of the fine particles ofballast grinding under the rail. (SeeFigure 5.) A careful study of the wearing effect ofballast upon ties during tie removal sea-sons where the actual cause of deteri-oration under roadbed and track condi-tions can plainly be seen, is convincingevidence that such wear along the bottomedge only injures the ties where tampingis necessary at quite frequent intervals. Regarding the use of treated ties whereextraordinary wear by ballast is known toexist the same rule might apply that isobserv
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbaltimo, bookyear1912
