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Severn Rail Bridge
The Severn Railway Bridge (historically called the Severn Bridge) was a bridge carrying the railway across the River Severn between Sharpness and Lydney in Gloucestershire, England. It was built in the 1870s by the Severn Bridge Railway Company, primarily to carry coal from the Forest of Dean to the docks at Sharpness; it was the furthest-downstream bridge over the Severn until the opening of the Severn road bridge in 1966. When the company got into financial difficulties in 1893, it was taken over jointly by the Great Western Railway and the Midland Railway companies. The bridge continued to be used for freight and passenger services until 1960, and saw temporary extra traffic on the occasions that the Severn Tunnel was closed for engineering work. The bridge was constructed by Hamilston's Windsor Ironworks Company Limited of Garston, Liverpool. It was approached from the north via a masonry viaduct and had twenty-two spans. The pier columns were formed of circular secti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Severn
, name_etymology = , image = SevernFromCastleCB.JPG , image_size = 288 , image_caption = The river seen from Shrewsbury Castle , map = RiverSevernMap.jpg , map_size = 288 , map_caption = Tributaries (light blue) and major settlements on and near the Severn (bold blue) , pushpin_map = , pushpin_map_size = 288 , pushpin_map_caption= , subdivision_type1 = Country , subdivision_name1 = England and Wales , subdivision_type2 = , subdivision_name2 = , subdivision_type3 = Region , subdivision_name3 = Mid Wales, West Midlands, South West , subdivision_type4 = Counties , subdivision_name4 = Powys, Shropshire, Worcestershire, Gloucestershire , subdivision_type5 = Cities , subdivision_name5 = Shrewsbury, Worcester, Gloucester, Bristol , length = , width_min = , width_avg = , width_max = , depth_min = , depth_avg = ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Awre
Awre () is a village, civil parish and electoral ward in the Forest of Dean District of Gloucestershire, England, near the River Severn. Both the parish and the electoral ward include Blakeney, Etloe, Gatcombe, Viney Hill, and Two Bridges. According to the 2001 census, Awre had a population of 1,644, increasing to 1,714 at the 2011 census. The electoral ward gives similar figures History The name is from Old English; ''āfor'' "bitter or sour" and ''ēa'' "water-meadow or island" translates to "sour water-meadow". The manor of Awre is mentioned in the Domesday Book of 1086. Together with Lydney and Alvington, the parish of Awre comprised Bledisloe Hundred.Bledisloe Hundred A History of the County of Gloucester: Volume 5. Victoria County History Awre was a large parish which included the tithings of Blakeney, Bledi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-track Railway
A single-track railway is a railway where trains traveling in both directions share the same track. Single track is usually found on lesser-used rail lines, often branch lines, where the level of traffic is not high enough to justify the cost of constructing and maintaining a second track. Advantages and disadvantages Single track is significantly cheaper to build and maintain, but has operational and safety disadvantages. For example, a single-track line that takes 15 minutes to travel through would have capacity for only two trains per hour in each direction safely. By contrast, a double track with signal boxes four minutes apart can allow up to 15 trains per hour in each direction safely, provided all the trains travel at the same speed. This hindrance on the capacity of a single track may be partly overcome by making the track one-way on alternate days, if the single track is not used for public passenger transit. Long freight trains are a problem if the passing s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seven Railway Bridgemap 1946
7 is a number, numeral, and glyph. 7 or seven may also refer to: * AD 7, the seventh year of the AD era * 7 BC, the seventh year before the AD era * The month of July Music Artists * Seven (Swiss singer) (born 1978), a Swiss recording artist * Seven (Korean singer) (born 1984), a South Korean recording artist * Se7en (American singer) (born 1986), the former stage name of Sevyn Streeter * Mick Thomson or #7, an American recording artist * Seven (band), a British AOR band * The Seven (band) a late 1960s rock band from Syracuse, New York * Seven (record producer) (born 1980), an American producer * S Club 7, a British pop band * SVN, a British pop band featuring Aimie Atkinson and Jarnéia Richard-Noel from the cast of ''SIX'' * Sevendust, a hard rock band from Atlanta, Georgia Albums * ''7'' (Apoptygma Berzerk album), 1996 * ''7'' (Beach House album), 2018 * ''7'' (Bushido album), 2007 * ''7'' (Con Funk Shun album), 1981 * ''7'' (David Guetta album), 2018 * ''7'' (David ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blacksmith
A blacksmith is a metalsmith who creates objects primarily from wrought iron or steel, but sometimes from #Other metals, other metals, by forging the metal, using tools to hammer, bend, and cut (cf. tinsmith). Blacksmiths produce objects such as gates, grilles, railings, light fixtures, furniture, sculpture, tools, agricultural implements, decorative and religious items, cooking utensils, and weapons. There was an historical distinction between the heavy work of the blacksmith and the more delicate operation of a whitesmith, who usually worked in Goldsmith, gold, Silversmith, silver, pewter, or the finishing steps of fine steel. The place where a blacksmith works is called variously a smithy, a forge or a blacksmith's shop. While there are many people who work with metal such as farriers, wheelwrights, and Armourer, armorers, in former times the blacksmith had a general knowledge of how to make and repair many things, from the most complex of weapons and armor to simple things ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piling
A deep foundation is a type of foundation that transfers building loads to the earth farther down from the surface than a shallow foundation does to a subsurface layer or a range of depths. A pile or piling is a vertical structural element of a deep foundation, driven or drilled deep into the ground at the building site. There are many reasons that a geotechnical engineer would recommend a deep foundation over a shallow foundation, such as for a skyscraper. Some of the common reasons are very large design loads, a poor soil at shallow depth, or site constraints like property lines. There are different terms used to describe different types of deep foundations including the pile (which is analogous to a pole), the pier (which is analogous to a column), drilled shafts, and caissons. Piles are generally driven into the ground in situ; other deep foundations are typically put in place using excavation and drilling. The naming conventions may vary between engineering discip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swing Bridge
A swing bridge (or swing span bridge) is a movable bridge that has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span (turning span) can then pivot horizontally as shown in the animated illustration to the right. Small swing bridges as found over canals may be pivoted only at one end, opening as would a gate, but require substantial underground structure to support the pivot. In its closed position, a swing bridge carrying a road or railway over a river or canal, for example, allows traffic to cross. When a water vessel needs to pass the bridge, road traffic is stopped (usually by traffic signals and barriers), and then motors rotate the bridge horizontally about its pivot point. The typical swing bridge will rotate approximately 90 degrees, or one-quarter turn; however, a bridge which intersects the navigation channel at an oblique angle may be built to rotate only 45 degrees, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oolitic Limestone
Oolite or oölite (''egg stone'') is a sedimentary rock formed from ooids, spherical grains composed of concentric layers. The name derives from the Ancient Greek word for egg (ᾠόν). Strictly, oolites consist of ooids of diameter 0.25–2 millimetres; rocks composed of ooids larger than 2 mm are called pisolites. The term ''oolith'' can refer to oolite or individual ooids. Composition Ooids are most commonly composed of calcium carbonate (calcite or aragonite), but can be composed of phosphate, clays, chert, dolomite or iron minerals, including hematite. Dolomitic and chert ooids are most likely the result of the replacement of the original texture in limestone. Oolitic hematite occurs at Red Mountain near Birmingham, Alabama, along with oolitic limestone. They are usually formed in warm, supersaturated, shallow, highly agitated marine water intertidal environments, though some are formed in inland lakes. The mechanism of formation starts with a small fragment of se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abutment
An abutment is the substructure at the ends of a bridge span or dam supporting its superstructure. Single-span bridges have abutments at each end which provide vertical and lateral support for the span, as well as acting as retaining walls to resist lateral movement of the earthen fill of the bridge approach. Multi-span bridges require piers to support ends of spans unsupported by abutments. Dam abutments are generally the sides of a valley or gorge, but may be artificial in order to support arch dams such as Kurobe Dam in Japan. The civil engineering term may also refer to the structure supporting one side of an arch, or masonry used to resist the lateral forces of a vault.Pevsner, N. (1970) ''Cornwall''; 2nd ed. Harmondsworth: Penguin; p. 245 The impost or abacus of a column in classical architecture may also serve as an abutment to an arch. The word derives from the verb "abut", meaning to "touch by means of a mutual border". Use in engineering An abutment may be us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrought Iron
Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag Inclusion (mineral), inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to structural failure, failure. Wrought iron is tough, malleable, ductile, corrosion resistant, and easily forge welding, forge welded, but is more difficult to welding, weld electrically. Before the development of effective methods of steelmaking and the availability of large quantities of steel, wrought iron was the most common form of malleable iron. It was given the name ''wrought'' because it was hammered, rolled, or otherwise worked while hot enough to expel molten slag. The modern functional equivalent of wrought iron is Carbon steel#Mild or low-carbon steel, mild steel, also called low-carbon steel. Neither wrought iron nor mild steel contain enough carbon to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Severn And Wye Railway
The Severn and Wye Railway began as an early tramroad network established in the Forest of Dean to facilitate the carriage of minerals to watercourses for onward conveyance. It was based on Lydney, where a small harbour was constructed, and opened its line to Parkend in 1810. It was progressively extended northwards, and a second line, the ''Mineral Loop'' was opened to connect newly opened mineral workings. To facilitate transfer of traffic to the neighbouring South Wales Railway main line, the Severn and Wye Railway network was converted from a plateway to a locomotive-worked broad gauge edge railway, and then to a standard gauge railway. Extensions were made to Lydbrook, Cinderford and Coleford. The company's finances were dependent on the mineral industry of the Forest of Dean, and in 1879 economic difficulties caused it to amalgamate with the Severn Bridge Railway. In fact this resulted in a worsening of the situation, and the combined company sold its business to the Gre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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