. The street railway review . ELECTRIC PILE DRIVER. By courU-sy <if Mr. A. Kcmpstcr, secretary of tlio Scaltlc(Wash.) Tniclion Co., \vc have received a plioloRrapli and descrip-tion of an electric pile driver built in the companys shops after de-signs of Siipl. N, Law-son. The company hasalxnit two miles of tres-tle work alonK the eastshore of Lake Union,and when it became nec-essary to replace thispiling last spring the carshown in the accom-panying illnstration wasbuilt for the work. The machine ismounted on a 30-ft. dou-ble truck flat car. Thegins arc 35 ft. in heightand in order to
. The street railway review . ELECTRIC PILE DRIVER. By courU-sy <if Mr. A. Kcmpstcr, secretary of tlio Scaltlc(Wash.) Tniclion Co., \vc have received a plioloRrapli and descrip-tion of an electric pile driver built in the companys shops after de-signs of Siipl. N, Law-son. The company hasalxnit two miles of tres-tle work alonK the eastshore of Lake Union,and when it became nec-essary to replace thispiling last spring the carshown in the accom-panying illnstration wasbuilt for the work. The machine ismounted on a 30-ft. dou-ble truck flat car. Thegins arc 35 ft. in heightand in order to permitthe car to pass underthe span wires, the ginsare swrniK from channel. ELECTRIC PILE DKIVEK, SE.\ pins 8 ft. above tlie deck of the car. The hammer is of the ordinarydesign weighing 2,400 lb. The motive power is one 15-h. p. F-30railway motor. With this pile driver as many as 72 piles were driven in one day,the average number being 50. SOME ESTIMATES ON COSTS. The following table is extracted from an article entitled TheCommercial Engineer by Mr. C. W. Bennett, B. M. E., publishedin the Wisconsin Engineer. Mr. Bennett is connected with the El-wood, Ind., plant of the American Tin Plate Co., and the data wereprepared with special reference to rolling mill construction. How-ever, they should be of value for other shop and manufacturingbuildings. The following table of costs has been found very useful and fairlyaccurate for estimate work, the various items having been checkedover a number of years observations and under varying conditions of locality an<l state of market. The present unstable liiRli pricesquoted on steel products prevent close figu
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
