Search results
Results from the WOW.Com Content Network
A railroad tie, crosstie (American English), railway tie (Canadian English) or railway sleeper (Australian and British English) is a rectangular support for the rails in railroad tracks. Generally laid perpendicular to the rails, ties transfer loads to the track ballast and subgrade , hold the rails upright and keep them spaced to the correct ...
The FRA notices said that the need for the new rules was shown by the derailment of an Amtrak train near Home Valley, Washington on 3 April 2005, which, according to the U.S. National Transportation Safety Board, was caused in part by excessive (more than 0.5 inches (13 millimetres)) abrasion of the concrete.
A railway track (CwthE and UIC terminology) or railroad track (NAmE), also known as permanent way (CwthE) [1] or "P Way" (BrE [2] and Indian English), is the structure on a railway or railroad consisting of the rails, fasteners, sleepers (railroad ties in American English) and ballast (or slab track), plus the underlying subgrade.
Examples include a 50-foot (15 m) long iron Howe truss was built for the Boston and Providence Railroad [2] [30] and a 30-foot (9.1 m) long railroad bridge over the Ohio and Erie Canal in Cleveland. [31] [32] Iron, however, was the preferred bridge for automobile and railroads, and the Howe truss did not adapt well to all-iron construction. [1]
A tie plate, baseplate or sole plate is a steel plate for centering and reinforcing the attachment point on the rail tracks between a flanged T rail and a railroad tie. The tie plate increases bearing area and holds the rail to correct gauge. It is fastened to wooden ties by means of spikes or bolts through holes in the plate.
The facility at 2800 W. High St. treated railroad ties from 1907 until 2004. ... is to have the work plan finalized by the end of April and begin sampling in the late summer. ... and tucked across ...
CVS Health's Caremark, Cigna's Express Scripts and UnitedHealth Group's Optum control the majority of the U.S. pharmacy benefit market, with their parent companies also operating health insurance ...
The appropriate thickness of a layer of track ballast depends on the size and spacing of the ties, the amount of traffic on the line, and various other factors. [1] Track ballast should never be laid down less than 150 mm (6 inches) thick, [5] and high-speed railway lines may require ballast up to 0.5 metres (20 inches) thick. [6]