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The 1 ft 11 + 1 ⁄ 2 in (597 mm) gauge Lynton and Barnstaple Railway (1898 to 1935) in North Devon, experimented with concrete sleepers at a number of locations along the line. As the sleepers were cast to gauge, they were of little use outside the station areas on this very curvaceous line where gauge slackening was commonly required.
Sleepers are 8 ft 6 in (2.59 m) long, 10 inches (254 mm) wide and 5 inches (127 mm) deep. The two sleepers adjacent to a joint may be 12 inches (305 mm) wide where the formation is soft or the traffic is heavy and fast.
Aluminium foam sandwich (AFS) is a sandwich panel product which is made of two metallic dense face sheets and a metal foam core made of an aluminium alloy. AFS is an engineering structural material owing to its stiffness-to-mass ratio and energy absorption capacity ideal for application such as the shell of a high-speed train .
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A chair screw (also known as coach screw [16]) is a large (~6 in or 152 mm length, slightly under 1 in or 25 mm diameter) metal screw used to fix a chair (for bullhead rail), baseplate (for flat bottom rail) or to directly fasten a rail. Chair screws are screwed into a hole bored in the sleeper. [17]
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.
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]
Sheet metal is available in flat pieces or coiled strips. The coils are formed by running a continuous sheet of metal through a roll slitter. In most of the world, sheet metal thickness is consistently specified in millimeters. In the U.S., the thickness of sheet metal is commonly specified by a traditional, non-linear measure known as its ...
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3579 S High St, Columbus, OH · Directions · (614) 409-0683