. Electric railway journal . % •iooo-t§ -5 010 OHO 1 1 1 ■ J ^ 1 1 ._ •—-„^ . |r^. \ \ Loadit /fa/ Depre^ V- a/& \ .,. \ x- \ tasttia)/ \ >. \ A \ \ \ \ \ \ \ \ a i ^ \ oK. \ \ ^\ OJff \ V, \ ff4fl TRACK DEPRESSION PROFILES. LOAD APPLIED TO FOUR-WHEEL TRUCK AT ONE END OF CAR. WHEEL BASE 5 IN. (UPPER DIAGRAMS) SAWED OAK TIES, CINDERBALLAST, 85-LB. RAIL, (LOWER DIAGRAMS) HEWNSOFT WOOD TIES, GRAVEL BALLAST. 75-LB. RAIL depth the load begins to spread, and at a depth equalto the tie spacing the pressure is nearly uniformly dis-tributed. Distribution of Load to Ties New measurements of trac
. Electric railway journal . % •iooo-t§ -5 010 OHO 1 1 1 ■ J ^ 1 1 ._ •—-„^ . |r^. \ \ Loadit /fa/ Depre^ V- a/& \ .,. \ x- \ tasttia)/ \ >. \ A \ \ \ \ \ \ \ \ a i ^ \ oK. \ \ ^\ OJff \ V, \ ff4fl TRACK DEPRESSION PROFILES. LOAD APPLIED TO FOUR-WHEEL TRUCK AT ONE END OF CAR. WHEEL BASE 5 IN. (UPPER DIAGRAMS) SAWED OAK TIES, CINDERBALLAST, 85-LB. RAIL, (LOWER DIAGRAMS) HEWNSOFT WOOD TIES, GRAVEL BALLAST. 75-LB. RAIL depth the load begins to spread, and at a depth equalto the tie spacing the pressure is nearly uniformly dis-tributed. Distribution of Load to Ties New measurements of track depressions under knownloads not only confirmed the former deduction that trackis elastic but also provided data for computing the loadon the individual ties. A leveling bar was used to measure the depressionsand plots were made of depressions under a four-wheeltruck loaded to different total loads. When the depres-sions at any one point were plotted on a base of load astraight line resulted, demonstrating elastic action, butin the early stage of the depressions there was
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
