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  2. Loading gauge - Wikipedia

    en.wikipedia.org/wiki/Loading_gauge

    The maximum height, width, and length of general Chinese rolling stock are 4,800 mm (15 ft 9 in), 3,400 mm (11 ft 2 in) and 26 m (85 ft 4 in) respectively, with an extra out-of-gauge load allowance of height and width 5,300 by 4,450 mm (17 ft 5 in by 14 ft 7 in) with some special shape limitation, corresponding to a structure gauge of 5,500 by ...

  3. Railway track - Wikipedia

    en.wikipedia.org/wiki/Railway_track

    A sleeper (tie or crosstie) is a rectangular object on which the rails are supported and fixed. The sleeper has two main roles: to transfer the loads from the rails to the track ballast and the ground underneath, and to hold the rails to the correct width apart (to maintain the rail gauge). They are generally laid transversely to the rails.

  4. Rail profile - Wikipedia

    en.wikipedia.org/wiki/Rail_profile

    Height of rail equaled width of foot for each ASCE tee-rail weight; and the profiles specified fixed proportion of weight in head, web and foot of 42%, 21% and 37%, respectively. ASCE 90 lb/yd (44.6 kg/m) profile was adequate; but heavier weights were less satisfactory.

  5. Track gauge - Wikipedia

    en.wikipedia.org/wiki/Track_gauge

    The most common use of the term "track gauge" refers to the transverse distance between the inside surfaces of the two load-bearing rails of a railway track, usually measured at 12.7 millimetres (0.50 inches) to 15.9 millimetres (0.63 inches) below the top of the rail head in order to clear worn corners and allow for rail heads having sloping ...

  6. Dual gauge - Wikipedia

    en.wikipedia.org/wiki/Dual_gauge

    Gallery: Dual gauge (4 rails) 1435 / 1000 mm (4 ft 8 1 / 2 / 3 ft 3 3 8 in). In the foreground, the narrow gauge diverges via a fixed-rail configuration. [f] 1520 / 1435 mm (4 ft 11 27 / 32 / 4 ft 8 1 / 2 in). The gauges of this track are as follows (numbering the rails from left to right). 1520 mm gauge: rails 1 and 3; 1435 mm gauge: rails 2 ...

  7. List of track gauges - Wikipedia

    en.wikipedia.org/wiki/List_of_track_gauges

    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".

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  9. History of the railway track - Wikipedia

    en.wikipedia.org/wiki/History_of_the_railway_track

    Cast iron rails, 4 feet (1.2 m) long, began to be used in the 1790s and by 1820, 15-foot-long (4.6 m) wrought iron rails were in use. The first steel rails were made in 1857 and standard rail lengths increased over time from 30 to 60 feet (9.1–18.3 m). Rails were typically specified by units of weight per linear length and these also increased.

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