. Electric railway journal . SHEET METAL ENCASED FORMS FOR TIE POCKETS floor, two 9-in., 15-lb. channels placed 12 in. back toback were provided at 4 ft. V^-in. intervals as trans-verse stringers to carry the track loads. Over theseand the bridge stringers a heavily reinforced slab floor was laid. In order to provide ananchorage for the channels, pockets were cast in theconcrete. These pockets were 6 in. wide on the bot-tom, 10 in. wide at the top and 6 ft. 10 in. long. Theforms used for this purpose are shown in the photo-graph reproduced above. The entire pocket was ^ Bars ben
. Electric railway journal . SHEET METAL ENCASED FORMS FOR TIE POCKETS floor, two 9-in., 15-lb. channels placed 12 in. back toback were provided at 4 ft. V^-in. intervals as trans-verse stringers to carry the track loads. Over theseand the bridge stringers a heavily reinforced slab floor was laid. In order to provide ananchorage for the channels, pockets were cast in theconcrete. These pockets were 6 in. wide on the bot-tom, 10 in. wide at the top and 6 ft. 10 in. long. Theforms used for this purpose are shown in the photo-graph reproduced above. The entire pocket was ^ Bars beni as shorrnt7/2 C to C. SECTION THROUGH SLAB, SHOWING TIE TROUGH faced with a heavy coating of asphaltum to serve asa parting in case it became necessary to remove thetrack and ties at any future time. Recesses V2 and 15 in. wide were also made in the bridgefloor under both rails. These were provided so thatthe track could be raised to grade and about 1 in. ofgrout floated beneath the tie plates to furnish thepermanent bearing. The recesses with the track inplace are shown in the illustrations at the bottom ofthis page.
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
