. Electric railway journal . AMERICAN ELECTRIC RAILWAY ASSOCIATION T-RAIL STANDARDSLeft—90-lb. low T-rail; center—80-lb. low T-rail ; right—7-in., 80-lb. plain girder (high T-rail). In spite of the ap-parent simplicity ofoutline, there are alarge number of fac-tors which have aninfluence upon gir-der-rail design. Railsfor use in pavedstreets present sev-eral added featureswhich are not requir-ed in standard sec-tion (low-T) some of thegeneral requisites ofdesign were outlinedby earlier commit-tees, it remained forthe 1911 way com-mittee to present an analysis of section or design,
. Electric railway journal . AMERICAN ELECTRIC RAILWAY ASSOCIATION T-RAIL STANDARDSLeft—90-lb. low T-rail; center—80-lb. low T-rail ; right—7-in., 80-lb. plain girder (high T-rail). In spite of the ap-parent simplicity ofoutline, there are alarge number of fac-tors which have aninfluence upon gir-der-rail design. Railsfor use in pavedstreets present sev-eral added featureswhich are not requir-ed in standard sec-tion (low-T) some of thegeneral requisites ofdesign were outlinedby earlier commit-tees, it remained forthe 1911 way com-mittee to present an analysis of section or design, whichis a landmark in such committee work. That analysispresents a reason for every feature of a groove girderrail. The more general principles which control design ofgirder rails are: (1) Performance of existing sectionsin use with the view of retaining the good featuresand eliminating defects. (2) Redistribution of metal togive maximum strength at critical points. (3) Use ofan outline of section and distribution of metal whichwill permit ease of rolling without sacrifice of essentialcharacteristics. (4) Possibility of combining all thefeatures that are necessary in a stand
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
