. Electric railway journal . ith red and green lenses. At all crossings withmain line steam tracks the grades are separated^ except incities, where derailers are installed. A grade crossing withthe Chicago Outer Belt Line Railroad near East Chicagois protected by an interlocking plant, with a signal tower. All bridges over other railways are of steel designedfor Coopers E-50 loading. Highway bridges are of rein-forced concrete. There is but one section of pile trestleon the property, and this comprises the approaches to theCalumet River bridge. This wood trestle will be partlyfilled with sand
. Electric railway journal . ith red and green lenses. At all crossings withmain line steam tracks the grades are separated^ except incities, where derailers are installed. A grade crossing withthe Chicago Outer Belt Line Railroad near East Chicagois protected by an interlocking plant, with a signal tower. All bridges over other railways are of steel designedfor Coopers E-50 loading. Highway bridges are of rein-forced concrete. There is but one section of pile trestleon the property, and this comprises the approaches to theCalumet River bridge. This wood trestle will be partlyfilled with sand and partly replaced by a steel viaduct. April io, 1909.] ELECTRIC RAILWAY JOURNAL. 675 Large culverts and cattle passes are of reinforced con-crete. A minimum clearance of 17 ft. 6 in. above the railis maintained under all structures over the track, to allowfor catenary construction and the use of a pantograph. The rail bonds outside of cities are No. 0000 copper, with%-in. solid terminals placed under the base of the Chicago, Lake Shore & South Bend—A Long Tangent The holes for the terminals were made with hydraulicpunches which left cone-shaped openings with their largerdiameter at the top. The bonds were inserted from under-neath and the terminals expanded into place with hy-draulic compressors at a pressure of about 15 tons persquare inch. After four months of use by heavy ballasttrains and 70-ton locomotives operating over the unbal-lasted track not one loose terminal has been found, al-
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
