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  2. Rail profile - Wikipedia

    en.wikipedia.org/wiki/Rail_profile

    Weight mark "155 PS" on a jointed segment of 155 lb/yd (76.9 kg/m) "Pennsylvania Special" rail, the heaviest grade of rail ever mass-produced Cross-section drawing showing measurements in Imperial units for 100 lb/yd (49.6 kg/m) rail used in the United States, c. 1890s New York Central System Dudley 127 lb/yd (63.0 kg/m) rail cross section

  3. Track gauge in the United States - Wikipedia

    en.wikipedia.org/wiki/Track_gauge_in_the_United...

    Chartered in 1832, its first section opening in 1841, the Erie's promoters and early engineers believed it would be so busy that wider gauged tracks would be required for locomotives much larger (and therefore more powerful) than usual to pull the expected very long and heavy trains. 6 ft gauge was also cited for improved stability, and the New ...

  4. Track gauge - Wikipedia

    en.wikipedia.org/wiki/Track_gauge

    Cross-section of 4-rail dual-gauge track (standard and metre gauge/ narrow gauge) (click to enlarge) Cross-section of Australian dual-gauge track – 1600 mm (5 ft 3 in) and 1435 mm (4 ft 8 + 1 ⁄ 2 in) gauges (click to enlarge) Mixed gauge track at Sassari, Sardinia: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge and 950 mm (3 ft 1 + 3 ⁄ 8 in)

  5. Railway track - Wikipedia

    en.wikipedia.org/wiki/Railway_track

    In North America and the United Kingdom, rail is graded in pounds per yard (usually shown as pound or lb), so 130-pound rail would weigh 130 lb/yd (64 kg/m). The usual range is 115 to 141 lb/yd (57 to 70 kg/m). In Europe, rail is graded in kilograms per metre and the usual range is 40 to 60 kg/m (81 to 121 lb/yd).

  6. Standard-gauge railway - Wikipedia

    en.wikipedia.org/wiki/Standard-gauge_railway

    All the early French railways (including Saint-Etienne Andrezieux, authorised 1823, opened 1827) had a French Gauge of 1,500 mm (4 ft 11 + 1 ⁄ 16 in) from rail axis to rail axis, compatible with early standard gauge tolerances) Dublin and Kingstown Railway: 1831: 1834 For passenger traffic: converted to 5 ft 3in Newcastle & Carlisle Railway ...

  7. Loading gauge - Wikipedia

    en.wikipedia.org/wiki/Loading_gauge

    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.

  8. Track geometry - Wikipedia

    en.wikipedia.org/wiki/Track_geometry

    This is done by having a chord of 100 feet (30.48 m) connecting to two points on an arc of the reference rail, then drawing radii from the center to each of the chord's end points. The angle between the radii lines is the degree of curvature. [ 10 ]

  9. Track gauge in North America - Wikipedia

    en.wikipedia.org/wiki/Track_gauge_in_North_America

    In 1886, the southern railroads agreed to coordinate changing gauge on all their tracks. After considerable debate and planning, most of the southern rail network was converted from 5 ft (1,524 mm) gauge to 4 ft 9 in (1,448 mm) gauge, then the standard of the Pennsylvania Railroad, over two days beginning on May 31, 1886. Over a period of 36 ...