File:The Street railway journal (1904) (14737276906).jpg

Identifier: streetrailwayjo231904newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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Text Appearing Before Image:
FIG. 8.- Street Ry.Journal -DRILLING AND TIE SPACING OF 50-FT. RAILS FOR RAILBRACE CONSTRUCTION round iron rods with the short U-legs downward, are also tiedon to the base of the rail (Fig. 11). These are for the purposeof holding the concrete stringers against the possibility ofspreading. The wooden parts of the ties, which come betweenthe trenches, are then tamped so as to bring the track to apractically permanent line, and an absolute permanent sur-face. The trenches are then filled in with coarse concrete to April 2, 1904.) STREET RAILWAY JOURNAL. 527 within about i1^ ins. of the base of the rail (Fig. 12), andthe rail tamped with a finer concrete and allowed to set forseveral hours, so as to permit the chairs to sustain the rails.The temporary clips are then taken off, and the ties removed(Fig. 13). The cast-iron chairs (Fig. 14) have two sets ofbolts, one set of two vertical bolts that pass through permanentclips, which hold the rails down on the roadbed. The other set
Text Appearing After Image:
FIG. 10.—RAIL CLAMPED TO TEMPORARY TIES AND CAST IRONCHAIRS ATTACHED TO RAIL of two bolts press against the clips in a horizontal direction,and are for the final adjustment of the rails to gage and line.Before the chairs are attached to the rails, shims of about1-16 in. thick steel are placed between them and the base of therail. This is done for the following purpose: As the concreteshrinks slightly in setting, when these shims are removed and.the vertical bolts tightened, it insures a thorough and contin-uous support for the base of the rails. A solid sheet of con-crete is now filled in between the two rails, and for about 2 ft.

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