. American engineer and railroad journal . xamination of it conveys the impression of simple strong con-struction intended for continuous severe service under exact-ing traffic conditions. The specially noteworthy feature asidefrom the form and arrangement of the underframe is the em-ployment of commercial shapes of structural steel and theabsence of special or unusual sizes of material, the purposebeing to facilitate repairs from stocks that are ordinarily avail-able. The weight of the car empty will be about 38,000 pounds, butthe exact weight is not yet known. A recent test with a sam-ple ca
. American engineer and railroad journal . xamination of it conveys the impression of simple strong con-struction intended for continuous severe service under exact-ing traffic conditions. The specially noteworthy feature asidefrom the form and arrangement of the underframe is the em-ployment of commercial shapes of structural steel and theabsence of special or unusual sizes of material, the purposebeing to facilitate repairs from stocks that are ordinarily avail-able. The weight of the car empty will be about 38,000 pounds, butthe exact weight is not yet known. A recent test with a sam-ple car loaded with coal showed a deflection of less than %inch on all four of the sills, which indicates that the fibrestresses in these members have been kept below the calcu-lated amount, which was 12,000 pounds per square inch. Ordershave been placed for material for building 1,000 of these cars,the work to be done at the Roanoke shops of the road. Mr. Sandersons article will be found on page 190. 188 AMERICAN ENGINEER AND RAILROAD —.^-■.-*■* ^-=^ Fast Mail Locomotives—Chicago & Northwestern QuAYLE, Superintendent Motive Power. W. H. Marshall, Assistant Superintendent Motive Power.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
