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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 ...
Fang bolts or rail anchor bolts have also been used for fixing rails or chairs to sleepers. The fang bolt is a bolt inserted through a hole in the sleeper with a fanged nut that bites into the lower surface of the sleeper. For fastening flat-bottomed rails, an upper-lipped washer can be used to grip the edge of the rail.
Here the sleepers are extra heavy, about 250 kg, and may include gauge widening with transitional gauge widening. [10] Concrete sleepers for turnouts must be individually custom designed for the location. They are much longer than normal sleepers, have gaps for switch motors, and are generally made by a small number of specialist manufacturers ...
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Quercus ellipsoidalis, the northern pin oak or Hill's oak, is a North American species of oak tree native to the north-central United States and south-central Canada, primarily in the Great Lakes region and the Upper Mississippi Valley. [2] It most commonly occurs on dry, sandy soils. [3]
Ekaterina Goncharova - Getty Images Just like with most foods, you should consume pickles in moderation. One of the main reasons you should steer clear of eating too many is the sodium content.
Quercus imbricaria at Bayard Cutting Arboretum, Long Island, N.Y.. Quercus imbricaria is usually 15–18 meters (49–59 ft) high, maximum height 100 ft, with a broad pyramidal head when young, becoming in old age, broad-topped and open.
Creosote is a tar-based preservative that is commonly used for utility poles and railroad ties or sleepers. Creosote is one of the oldest wood preservatives, and was originally derived from a wood distillate, but now, virtually all creosote is manufactured from the distillation of coal tar.
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