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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 ...
A tie plate, baseplate or sole plate is a steel plate for centering and reinforcing the attachment point on the rail tracks between a flanged T rail and a railroad tie. The tie plate increases bearing area and holds the rail to correct gauge. It is fastened to wooden ties by means of spikes or bolts through holes in the plate.
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.
The appropriate thickness of a layer of track ballast depends on the size and spacing of the ties, the amount of traffic on the line, and various other factors. [1] Track ballast should never be laid down less than 150 mm (6 inches) thick, [5] and high-speed railway lines may require ballast up to 0.5 metres (20 inches) thick. [6]
Ideally, the track should have sleepers (railroad ties) at a closer spacing and a greater depth of ballast to accommodate the increased forces exerted in the curve. At the ends of a curve, where the rails straighten out, the amount of cant cannot change from zero to its maximum immediately. It must change gradually in a track transition curve ...
Axe ties are railway ties (or sleeper) [1] that are hewn by hand, usually with a broadaxe.There are 2,900 ties per mile of track on a first class railroad. [clarification needed] The early railways would not accept ties cut with a saw, as it was claimed that the kerf of the saw splintered the fibres of the wood, leaving them more likely to soak up moisture causing premature rot.
Miles Bird scored 18 points and Jared Coleman-Jones added 16 to help San Diego State edge No. 6 Houston 73-70 in overtime in the third place game of the Players Era tournament Saturday night.
Extra heavy concrete sleepers [10] 87.8 m (288 ft 11 ⁄ 16 in) North American rail network: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) Absolute minimum radius; not on lines for general service 85 m (279 ft) Windberg Railway (de:Windbergbahn) 1,435 mm (4 ft 8 + 1 ⁄ 2 in) (between Freital-Birkigt and Dresden-Gittersee) - restrictions to wheelbase 80 m ...
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