. The Street railway journal . VIEW SHOWING METHOD OF THIRD-RAIL SUSPENSION ADOPTED ON THE MARKET STREET ELEVATED LINE TO SIXTY-THIRD STREET plate-girder construction is adopted, there is considerablevariation on account of the deflection of the alignment, andin a number of spans the longitudinal girders are supported and Charles H. Mills, principal assistant engineer. The steel work was furnished by the American Bridge Company. The track construction adopted for the Market Street. AT MARKET AND SIXTY-THIRD STREETS, WHERE THE THIRD RAIL IS PLACED BETWEEN THE TRACKS by transverse girders projec
. The Street railway journal . VIEW SHOWING METHOD OF THIRD-RAIL SUSPENSION ADOPTED ON THE MARKET STREET ELEVATED LINE TO SIXTY-THIRD STREET plate-girder construction is adopted, there is considerablevariation on account of the deflection of the alignment, andin a number of spans the longitudinal girders are supported and Charles H. Mills, principal assistant engineer. The steel work was furnished by the American Bridge Company. The track construction adopted for the Market Street. AT MARKET AND SIXTY-THIRD STREETS, WHERE THE THIRD RAIL IS PLACED BETWEEN THE TRACKS by transverse girders projecting a considerable distancebeyond them to provide for the location of the vertical col-umns at suitable points in the street, and to clear the streetrailway track connections. The longest transverse girder isabout 53 ft. 4 ins. long. The structure was proportioned for a live load of electric elevated structure covers the use of a 90-lb. T-rail laid on6-in. X 8-in. x 8-ft. ties in rock ballast on the concretefloor or on the ties alone on the open span beyond thecounty line. Up to Sixty-Third Street the same type andstyle of outside suspension or underrunning third rail em-ployed in the subway is used. Beyond that point, which February i6, 1907.] STREET RAILWAY JOURNAL. 281 marks the descent to grade terminating at Sixty-Ninth Another illustration shows a typical passenger station as Street, the company has placed the contact rails between it will appear when completed. the
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
