. Railway track and track work . ust be borne in mind that the width of tread of wheels for electriccars is much less than that of ordinary railway wheels, so that very littlewidening of gage can be made without unduly reducing the bearing of thewheel upon the inner rail. On sharp curves where guard rails are required(sometimes all under 500 ft. radius), the gage may be widened a sufficientamount (according to the width of the groove) to prevent the flange of thewheel from cutting into the tread of the outer rail. Some double-trackelectric cars have, trucks 17 ft. 9 ins. c. to c; truck wheelba
. Railway track and track work . ust be borne in mind that the width of tread of wheels for electriccars is much less than that of ordinary railway wheels, so that very littlewidening of gage can be made without unduly reducing the bearing of thewheel upon the inner rail. On sharp curves where guard rails are required(sometimes all under 500 ft. radius), the gage may be widened a sufficientamount (according to the width of the groove) to prevent the flange of thewheel from cutting into the tread of the outer rail. Some double-trackelectric cars have, trucks 17 ft. 9 ins. c. to c; truck wheelbase, 4 ft. 6 ins.;wheels, 33 ins.; width of tread, 2*4 ins.; flanges, %-in. deep and 1 in. thick;axles, 4% ins. diameter. As to the grades, electric railways operate success-fully on grades of 8 to 12%, while 5 to 6% grades are common. On cablelines, grades of 15 and 18% are surmounted. As already noted, the rails may be laid either upon a continuous sheetof concrete across the street, or upon concrete stringers, the latter being. -New Asphak— 6 h= ^ ^0ld\Asphalf Nf 1J—20 H f-Q\d\Asphalt ___ 5r_ : ■::.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
