. The street railway review . type. The longest bridgestructure is a pile trestle across the filter of the .American Straw-board plant at Noblesville. There being a state statute prohibit-ing the Strawboard company from turning the waste water fromits plant directly into the river, this waste is delivered to a largepond, and after purification by settling, escapes to the river through Dec 20, 1904.] STREET RAILWAY REVIEW. 947 a sluiceway. The length of the pile trestle across the pond andadjacent low ground is ft.; the spans are 16 ft. each. All bridges were designed according to Coopers
. The street railway review . type. The longest bridgestructure is a pile trestle across the filter of the .American Straw-board plant at Noblesville. There being a state statute prohibit-ing the Strawboard company from turning the waste water fromits plant directly into the river, this waste is delivered to a largepond, and after purification by settling, escapes to the river through Dec 20, 1904.] STREET RAILWAY REVIEW. 947 a sluiceway. The length of the pile trestle across the pond andadjacent low ground is ft.; the spans are 16 ft. each. All bridges were designed according to Coopers 1901 specitica-tions for electric railways. The dead load to consist of the weightof the structure itself. The live load is assumed to consist of is added. A variation of 150° F. in tcnipciaturc is presumed. Oncurves the centrifugal force of cars is assumed to act 5 ft. above thebase of the rail and is taken as live load, the speed being taken at, 50 miles per hour. Eflcct of braking cars on bridges is also pro-viiled ONK OF TIIK TWO BRIDGES .\( ROSS THE \V.\B,\SH RIVER .\T LOC.\NSPORT. wheels carrying 25,000 lb. each spaced at intervals of 6 ft., 14 ft.,6 ft., 19 ft., 6 ft., 14 ft., 6 ft., 19 ft., 6 ft., etc., and 100 lb. per sq. the rest of the floor. Wind stresses and vibration are provided for by proportioningthe top lateral bracing in deck bridges and the lower lateral brac-ing in through bridges to resist a lateral force of 300 lb. per ft. of Track. The track is laid with rails of 80-lb. A. S. C. £.■ and 72-lb. sections. The joints are the Continuous, and the spe-cial work was furnished by the Paige Iron Works. At each rail joint is one 250,000-c. m., Type F-3, lo-in. & Engluud rail bond. At all crossings and around special
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
