. The Street railway journal . the engraving will show the distinguishing featuresof the design. The more prominent of these are the cast-steel transom gussets which tie the side frames and tran- Springs (under bolster), double elliptic. Springs (on equalizers), double coil. Weight without motors, wheels or axles, about 6500 lbs. Weight complete with motors, about 12,000 lbs. THE STRENGTH OF STRUCTURAL TIMBER Recent tests by the Forest Service of loblolly, longleaf andNorway pines, tamarack, Douglas fir and western hemlockshow longleaf pine to be the strongest and stiffest of thetimbers, with
. The Street railway journal . the engraving will show the distinguishing featuresof the design. The more prominent of these are the cast-steel transom gussets which tie the side frames and tran- Springs (under bolster), double elliptic. Springs (on equalizers), double coil. Weight without motors, wheels or axles, about 6500 lbs. Weight complete with motors, about 12,000 lbs. THE STRENGTH OF STRUCTURAL TIMBER Recent tests by the Forest Service of loblolly, longleaf andNorway pines, tamarack, Douglas fir and western hemlockshow longleaf pine to be the strongest and stiffest of thetimbers, with Douglas fir a close second; while westernhemlock, loblolly pine, tamarack, and Norway pine follow inthe order given. Fortunately, Douglas fir and westernhemlock, of which there are comparatively large supplies,have high structural merit, as has also loblolly pine, thechief tree upon which the southern lumber companies aredepending for future crops. Much of the informationhitherto available concerning the strength of timber has. Drawn tv/th fu// /ocrcf.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
