. The Street railway journal . top of the rail. The ties are placed 2 ft. 6ins. between centers. It has been the custom heretofore to break joints in layingtrack; but it has recently been decided that there is no markedadvantage in such construction. The joints are now laid op-posite. Tie-plates are omitted in all paving in brick or asphalton a concrete base. Where the paving is granite a cast-irontie-plate about iJ/> ins. in thickness is used, so that the heightfrom the tie to the top of the rail is about 10 ins. No con-crete is placed under the ties, as it has not been found anyadvantage.
. The Street railway journal . top of the rail. The ties are placed 2 ft. 6ins. between centers. It has been the custom heretofore to break joints in layingtrack; but it has recently been decided that there is no markedadvantage in such construction. The joints are now laid op-posite. Tie-plates are omitted in all paving in brick or asphalton a concrete base. Where the paving is granite a cast-irontie-plate about iJ/> ins. in thickness is used, so that the heightfrom the tie to the top of the rail is about 10 ins. No con-crete is placed under the ties, as it has not been found anyadvantage. The track construction is securely bonded to therest of the street by the fact that the tie is bedded in the con-RAIL COMPOSITION SPECIFIED IN BOSTON Per Cent Per Cent Carbon .50 .60 Manganese .80 Sulphur, not to exceed .08 Phosphorus, not to exceed. \o8 Silicon .10 .15 Rails having carbon below .50 per cent will be having carbon above .62 per cent will be for rails made by Bessemer STANDARD GROOVED RAIL STANDARD GIRDER RAIL ININ PHILADELPHIA PITTSBURG crete and the rail rest upon the concrete. If there is any set-tling of the street the track, of course, goes with it; but thiswould occur in any event, even if there were concrete under thetie. The joints are angle-bar joints, having twelve bolts. The August 29, 1903.] STREET RAILWAY JOURNAL. form of construction used in outlying streets where a reserva-tion has been made alongside the roadway, so there is nopaving, is to lay a 7-in. T-rail, Pennsylvania section, No. object of the deep T-rail is to give a depth of 8 ins. of loamover the ties for raising grass. The composition of rails isspecified in the table on the opposite page. Most of the recent bonding has been with pro-tected rail-bonds. The company is now experi-menting with soldered bonds. The company finds that the life of untreated tiesis from four to five years in loamed reservations,and twenty years or longer unde
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
