Search results
Results From The WOW.Com Content Network
A bent in American English is a transverse rigid frame (or similar structures such as three-hinged arches).Historically, bents were a common way of making a timber frame; they are still often used for such, and are also seen in small steel-frame buildings, where the term portal frame is more commonly used.
Timber sleepers, that is transverse beams supporting the two rails that form the track, replaced the individual stone blocks formerly used. This system has the major advantage that maintenance adjustments to the track geometry did not disrupt the all-important track gauge. The alignment of the track could be adjusted by shifting the sleepers ...
A baulk road crossing showing the baulks (under the rails) and transoms (to maintain the gauge). Baulk road is the name given to a type of railway track or 'rail road' that is formed using rails carried on continuous timber bearings, as opposed to the more familiar 'cross-sleeper' track that uses closely spaced sleepers or ties to give intermittent support to stronger rails.
A railway track (English and UIC terminology) or railroad track (American English), also known as a train track or permanent way (often "perway" [1] in Australia or "P Way" in Britain [2] and India), is the structure on a railway or railroad consisting of the rails, fasteners, sleepers (railroad ties in American English) and ballast (or slab ...
As Americans settled the timber-starved Great Plains, they needed material from the lumber-rich parts of the nation with which to build their cities. The burgeoning railroad industry accounted for a fourth of the national lumber demand and required the product to build rail cars and stations, fashion ties, and power trains. [12]
Track geometry is concerned with the properties and relations of points, lines, curves, and surfaces [1] in the three-dimensional positioning of railroad track.The term is also applied to measurements used in design, construction and maintenance of track.
The most common use of the term "track gauge" refers to the transverse distance between the inside surfaces of the two load-bearing rails of a railway track, usually measured at 12.7 millimetres (0.50 inches) to 15.9 millimetres (0.63 inches) below the top of the rail head in order to clear worn corners and allow for rail heads having sloping ...
Arizona Eastern Railroad: AE 1904 1955 Southern Pacific Company: Arizona Extension Railroad: 1917 N/A Arizona Mineral Belt Railroad: 1883 1888 Central Arizona Railway: Arizona Narrow Gauge Railroad: 1882 1887 Tucson, Globe and Northern Railroad: Arizona and New Mexico Railway: SP: 1883 1935 El Paso and Southwestern Railroad: Arizona and South ...