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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 ...
[3] Interest in concrete railway sleepers increased after World War II following advances in the design, quality and production of pre-stressed concrete. Chaired bullhead concrete sleepers have been around since at least the 1940s; the Great Western using a two-holed chair, thus saving both scarce wartime timber and steel fixing bolts. [4]
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.
Y-shape steel sleepers (left), versus straight steel/wood sleepers (right) Y-shaped steel sleepers ( German : Y-Stahlschwellen ) are a type of railway sleeper designed to support railway track with a rail fastening system at with three points of contact.
The Breitspurbahn (German pronunciation: [ˈbʁaɪtʃpuːɐ̯baːn], translation: broad-gauge railway) was a railway system planned and partly surveyed by the Nazi government of Germany. Its track gauge – the distance between the two running rails – was to be 3000 mm ( 9 ft 10 + 1 ⁄ 8 in ), more than twice that of the 1435 mm ( 4 ft 8 + 1 ...
Concrete sleepers are unsuitable for conversion. Concrete sleepers may be cast with alternative gauge fittings in place, an example being those used during the conversion of the Melbourne–Adelaide railway from 1600 mm (5 ft 3 in) to 1435 mm (4 ft 8 + 1 ⁄ 2 in). Steel sleepers may have alternative gauge fittings cast at production, may be ...
The sleeper train leaves the worksite loaded with sections of panel track. The sleepers, sometimes known as bi-bloc sleepers, are U41 twin block reinforced concrete, 2.4 m (7 ft 10 in.) wide, and weigh 245 kg (540 lb) each. They are equipped with hardware for Nabla RNTC spring fasteners, and a 9 mm (3/8 in
The general standard in Germany and Switzerland had been to build new tracks with a centre-to-centre spacing of 3.8 m (12 ft) and a spacing of 4.5 m (15 ft) in railway stations. Depending on the usage of the tracks it was still possible to build new double track lines with track centres of just 3.5 m (11 ft).