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The origin of the term arris is from the Latin arista, meaning the beard or the ear of grain or the bone of a fish. See also arête. An arris rail is a structural element, whose cross section is a 45 degree isosceles right angled triangle. Arris rails are usually made of wood, and are manufactured by cutting a length of square-section timber ...
MAA - Magma Arizona Railroad; MAAX - Maxx Leasing Company; MACX - Mac Acquisitions; MADU - Magnum Speditionsgelleshaft; MAEU - Maersk Lines; MAGX - Magnimet, Monroe Scrap Division; MAIX - Macon Iron and Paper Stock
3M Company (originally the Minnesota Mining and Manufacturing Company) is an American multinational conglomerate operating in the fields of industry, ...
NS branded ICE 3 (Class 406) on the Cologne–Frankfurt high-speed rail line Class 406 driver cab. The ICE 3M (Class 406; M for multisystem) was developed to operate international services under the four different railway electrification systems in use on Europe's main lines and with support for various train protection systems.
The earliest rail chairs, made of cast iron and introduced around 1800, were used to fix and support cast-iron rails at their ends; [2] they were also used to join adjacent rails. [ 35 ] In the 1830s rolled T-shaped (or single-flanged T parallel rail ) and I-shaped (or double-flanged T parallel or bullhead ) rails were introduced; both required ...
In the United Kingdom, CWR is stressed to 27 °C (81 °F), the mean summer rail temperature. In the US, standard stress free temperatures vary from 35 to 43 °C (95 to 109 °F). [7] Despite stressing the CWR before installation, a rail may still reach its "Critical Rail Temperature" (CRT).
This rail gauge was soon changed to 7 ft 1 ⁄ 4 in (2,140 mm) [105] to ease running in curves. 2,140 mm 7 ft 1 ⁄ 4 in: South Africa East London and Table Bay harbour railways England Brunel's Great Western Railway until converted to standard gauge by May 1892, see Great Western Railway The "gauge war".
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 gauge.