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The rail profile is the cross sectional shape of a railway rail, perpendicular to its length. Early rails were made of wood, cast iron or wrought iron. All modern rails are hot rolled steel with a cross section approximate to an I-beam, but asymmetric about a horizontal axis (however see grooved rail below). The head is profiled to resist wear ...
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.
Crosslevel (or 'cross level') is the measurement of the difference in elevation (height) between the top surface of the two rails at any point of railroad track. The two points (each at the head of each rail) are measured at by the right angles to the reference rail. Since the rail can slightly move up and down, the measurement should be done ...
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An approximation of profiles of flat-bottom rail and bullhead rail, respectively the most common profile world-wide and the profile once dominant in the United Kingdom. Note: A drawing to scale is Drawing -- tramway and railway wheel and rail profiles.png. Date: SVG version: 12 April 2008. GIF version: 10 January 2005: Source
Dense light railway networks using temporary narrow gauge track sections were established by both sides for this purpose. [22] In 1939 it was proposed to construct the western section of the Yunnan–Burma Railway using a gauge of 15 + 1 ⁄ 4 in (387 mm), since such tiny or "toy" gauge facilitates the tightest of curves in difficult terrain. [23]
The cross section at the bottom of the well car differs from the X section of all other AAR plates. X section at center of car [31] [35] [34] Width of 10 feet 8 inches (3.25 m) only possible at the trucks [31] 10 1 3.07 [31] 20 3 6.17: 63 9 19.43: e.g. Including the height of double stacked containers in well cars.
Cross section diagram of Leeds and Selby railway chair, key and rail. As built, the line had 43 bridges and around 16 level crossings. [23] Ballast was of stone chips; the rails were held in place by keys lodged into iron chairs which rested on and were fixed to stone blocks or larch sleepers.