. Electric railway journal . USED AT LOW POINTS IN RAILWAY TRACK INKANSAS CITY are flanged as for the rails, and cement grouting fillsthe interstice between the short upper edge of theblocks and the edge of the top of the catch basin. Therelias been much trouble heretofore at points wherestreets are low. As water cannot be carried away bythe city catch basins, the resulting flooded streets oftencaused damage to motors and hampered traffic. Bates Trolley Pole Tested to Failure In order to test the efficacy of its expanded steel poles,the Bates Expanded Steel Truss Company, Chicago, 111.,subject
. Electric railway journal . USED AT LOW POINTS IN RAILWAY TRACK INKANSAS CITY are flanged as for the rails, and cement grouting fillsthe interstice between the short upper edge of theblocks and the edge of the top of the catch basin. Therelias been much trouble heretofore at points wherestreets are low. As water cannot be carried away bythe city catch basins, the resulting flooded streets oftencaused damage to motors and hampered traffic. Bates Trolley Pole Tested to Failure In order to test the efficacy of its expanded steel poles,the Bates Expanded Steel Truss Company, Chicago, 111.,subjected one of them, which was designed for catenarytrolley construction, to a test to the point of pole was a 25-ft. expanded 4-in. section, to whicha trolley wire supporting bracket, 11 ft. 9 in. long, hadbeen applied. The design details of this pole and themanner in which it was set in the ground for testingare shown in one of the accompanying pole was embedded in concrete only 2 ft. 6 in., while. the concrete foundation was 2 ft. 11 in. square and 4 Previous tests had demonstrated that the thor-ough mechanical bond between the pole and the concretemade it unnecessary to encase it the entire depth of theconcrete foundation block. The pole was set 8 ft. from the center of the track andthe bracket was 22 ft. 7y2 in. above the top of were attached to the bracket 8 ft. from the centerof the pole as shown in another one of the accompanyingillustrations. The lower end of the cable was anchoredto a tie, and a dynamometer for measuring the loadwas fastened to the cable. Just above the dynamometera standard pull jack was secured to the cable suspendedfrom the bracket and to the dynamometer. This pulljack applied the loads, which varied from 200 lb. to 1700lb. The results of this test are shown in the table form-ing a part of the illustration of the pole design indicated there, the loads applied are shown in thecenter column, t
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