. Railway mechanical engineer . 10 ZO 30 40 Car Factor, Tons Equafed Loading, TonsEnlarged Scale 900. soo woo zooo Eauaied Loadina. Tons. zsoo V O^Jooo Fig. 1—Standard Loading Chart for 10,000-Lb. Available Tractive Effort at Speeds Between 5 and 12 Under Various Weather Conditions weights and the allowance for car friction. Allowance forcar friction should be a constant quantity for a given weathercondition on any division and of such a value that it willaccurately equate any combination of car weights enteringinto the make-up of the train. It has been established thatthe friction allo
. Railway mechanical engineer . 10 ZO 30 40 Car Factor, Tons Equafed Loading, TonsEnlarged Scale 900. soo woo zooo Eauaied Loadina. Tons. zsoo V O^Jooo Fig. 1—Standard Loading Chart for 10,000-Lb. Available Tractive Effort at Speeds Between 5 and 12 Under Various Weather Conditions weights and the allowance for car friction. Allowance forcar friction should be a constant quantity for a given weathercondition on any division and of such a value that it willaccurately equate any combination of car weights enteringinto the make-up of the train. It has been established thatthe friction allowance cannot be constant for all temperatureconditions, because if it is correct for summer conditions itwill be too small at low temperatures. This feature will befully covered later. The train-loading method given herewith has been thor-oughly tested under a wide variation of weather conditions on 1. It is assumed that these loading curves are applicable tospeeds of from five to twelve miles jier hour over rulinggrades. Data for this chart are obtained in tlie following manner:Train resistanc
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
