. Electric railway journal . nstruction. The largestcut on the line, near Blandford, known as Tiffany cut, is Yz and end of every curve and at points 1000 ft. apart ontangent track. The brackets vary in length from ft., and the trolley lias a minimum clearance of18 ft. above the rail. The poles are designed to carry afeeder cross-arm with four insulators and two cross-armsfor high-tension lines at the top, the lines being carriedin 36-in. equilateral triangular spaci-ng. The poles are setfrom ft. deep in rock to 7 ft. in fills and cuts. On the 1274 ELECTRIC RAILWAY JOURNAL
. Electric railway journal . nstruction. The largestcut on the line, near Blandford, known as Tiffany cut, is Yz and end of every curve and at points 1000 ft. apart ontangent track. The brackets vary in length from ft., and the trolley lias a minimum clearance of18 ft. above the rail. The poles are designed to carry afeeder cross-arm with four insulators and two cross-armsfor high-tension lines at the top, the lines being carriedin 36-in. equilateral triangular spaci-ng. The poles are setfrom ft. deep in rock to 7 ft. in fills and cuts. On the 1274 ELECTRIC RAILWAY JOURNAL [Vol. XLII, No. 25. high-tension lines Locke No. 315 insulators and No. 84pins will be used. The local telephone circuit will be car-ried on insulators at the side of the pole and transposedevery fifth pole. A noteworthy feature of the line is the permanence ofits construction, as indicated, for example, in the view ofa siding built over a coal yard for the East Lee plant ofthe American W riting Paper Company. Here the track. Berkshire Improvements—Reinforced Concrete TrestleTrack at East Lee, Mass. is carried on a wooden trestle supported on reinforced con-crete piers 13 ft. apart on centers, 20 ft. high, 3 ft. x 8 the top and 4 ft. 6 in. x 10 ft. 6 in. at the ground bumping post and plank walk are provided at the tracklevel. The use of reinforced concrete increases the ca-pacity of the yard on account of the reduced space occu-pied by the piers. The trestle is designed to carry a 100,000-lb. capacity steel coal car at any portion of its length. OTHER EXTENSIONS The Canaan and Egremont extensions are not of unusualdesign, but represent a good standard of trolley line con-struction. They occupy private right-of-way so far aspracticable. The representative bridge illustrated hasthree spans of 168 ft. total length over the New York,New Haven & Hartford Railroad near Great The central span is a pony riveted Pratt truss 100ft. long and the approach
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