. The Street railway journal . -16in., more than twice that of the fillet in previous sections. By givingthis shape to the head, the flanges of the wheels plow into any dirtwhich collects in the groove, and crowd it out over the lip of therail, thus keeping it free and clean, and preserving the good elec-trical contact which is desired. This rail, in 60-ft. lengths, is laid on the bridge approaches ona 6-in. bed of concrete, with tie-rods every 3 ft., and paved betweenrails, and outside as well, with granite block paving on the con-crete bed, with pitch and gravel joints. On the suspended stru
. The Street railway journal . -16in., more than twice that of the fillet in previous sections. By givingthis shape to the head, the flanges of the wheels plow into any dirtwhich collects in the groove, and crowd it out over the lip of therail, thus keeping it free and clean, and preserving the good elec-trical contact which is desired. This rail, in 60-ft. lengths, is laid on the bridge approaches ona 6-in. bed of concrete, with tie-rods every 3 ft., and paved betweenrails, and outside as well, with granite block paving on the con-crete bed, with pitch and gravel joints. On the suspended structure, another specially designed rail sec-tion was laid, on stringers of creosoted yellow pine, and bolteddown with 7-in. x in. bolts, with head countersunk in flange-way of rail, and a 2yj-m. x sl^-in. x jX-in. washer, and spiral-splitnutlock. The wear on this section of rail is sliown on the ac-companying drawing. Fig. 2. This has had the same number ofcars pass over it that the 9-in. section, No, 241, had, i. e., 5,000,000. CONCRETE BEAM CONSTRUCTION cars in three and a half years. Although the specifications for thesteel were the same in both cases, the much greater wear on therail on the concrete foundation is notable, amounting to aboutdouble the amount of metal. The standard construction of the Brooklyn Heights RailroadCompany in streets where the pavement is granite block on con-crete foundation is as follows : The street is excavated to the sub-grade, which is leveled offwith sand. On this are laid the ties, 6 ins. x 8 ins. x 7 ft., withtamped foundations. On these are spiked the 9-in. girder rails, , section a:^ shown in Fig. i. with brace tie-plates every thirdtie, as shown, Weber joints being used for splicing. After therails are spiked down, and surfaced and lined, Portland cementconcrete is rammed in between the ties, and around the ends ofties, forming a solid bed of 6 ins. above the sub-grade between thetracks and rails, and 2 ft. outside. On this is l
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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
