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Box Beam
A box girder or tubular girder (or box beam) is a girder that forms an enclosed tube with multiple walls, as opposed to an - or H-beam. Originally constructed of wrought iron joined by riveting, they are now made of rolled or welded steel, aluminium extrusions or prestressed concrete. Compared to an -beam, the advantage of a box girder is that it better resists torsion. Having multiple vertical webs, it can also carry more load than an of equal height (although it will use more material than a taller -beam of equivalent capacity). The distinction in naming between a box girder and a tubular girder is imprecise. Generally the term ''box'' girder is used, especially if it is rectangular in section. Where the girder carries its "content" ''inside'' the "box", such as the Britannia Bridge, it is termed a ''tubular'' girder. ''Tubular'' girder is also used if the girder is round or oval in cross-section, such as the Royal Albert Bridge. Where a large box girder contains more t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Britannia Bridge - Circa 1852
The image of Britannia () is the national personification of United Kingdom, Britain as a helmeted female warrior holding a trident and shield. An image first used by the Romans in classical antiquity, the Latin was the name variously applied to the British Isles, Great Britain, and the Roman province of Britain during the Roman Empire. The Roman Britannia was typically depicted reclining or seated, with not a trident but a spear and shield, appearing on Roman coins of the 2nd century AD. The classical allegory was revived in the early modern period. On coins of the pound sterling issued by Charles II of England, Scotland, and Ireland, Britannia appears with her shield bearing the Union Flag. To symbolise the Royal Navy's victories, Britannia's spear became the trident in 1797, and a helmet was added to the coinage in 1825. By the 1st century BC, Britannia had replaced Albion as the prevalent Latin name for the island of Great Britain. After the Roman conquest of Britain, Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Material Efficiency
Material efficiency is a description or metric ((''M''p) (the ratio of material used to the supplied material)) which refers to decreasing the amount of a particular material needed to produce a specific product. Making a usable item out of thinner stock than a prior version increases the material efficiency of the manufacturing process. Material efficiency is associated with Green building and Energy conservation, as well as other ways of incorporating Renewable resources in the building process from start to finish. The impacts can include material efficiency include reducing energy demand, reducing Greenhouse gas emissions, and other environmental impacts such as land use, water scarcity, air pollution, water pollution, and waste management. A growing population with increasing wealth can increase demand for material extraction, and therefore processing may double in the next 40 years. Increasing Material efficiency can reduce the impacts of material consumption. Some forms of M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Severn Bridge
The Severn Bridge () is a Controlled-access highway, motorway suspension bridge that spans the River Severn between South Gloucestershire in England and Monmouthshire in South East Wales. It is the original Severn crossing, Severn road crossing between England and Wales, and took three and a half years to build, at a cost of Pound sterling, £8 million. It replaced the 137-year-old Aust Ferry. The bridge was opened in 1966 by Queen Elizabeth II. For thirty years, the bridge carried the M4 motorway. It was granted Grade I listed building, listed status in 1999. Following the completion of the Second Severn Crossing, the section of motorway from Olveston in England to Magor, Monmouthshire, Magor in Wales was designated the M48 motorway, M48. In addition to carrying the motorway, the bridge has service paths on each side which are open to pedestrians and cyclists. These carry National Cycle Route 4 and EuroVelo cycle routes, as well as hosting a weekly parkrun. History The f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerofoil
An airfoil (American English) or aerofoil (British English) is a streamlined body that is capable of generating significantly more lift than drag. Wings, sails and propeller blades are examples of airfoils. Foils of similar function designed with water as the working fluid are called hydrofoils. When oriented at a suitable angle, a solid body moving through a fluid deflects the oncoming fluid (for fixed-wing aircraft, a downward force), resulting in a force on the airfoil in the direction opposite to the deflection. This force is known as aerodynamic force and can be resolved into two components: lift (perpendicular to the remote freestream velocity) and drag ( parallel to the freestream velocity). The lift on an airfoil is primarily the result of its angle of attack. Most foil shapes require a positive angle of attack to generate lift, but cambered airfoils can generate lift at zero angle of attack. Airfoils can be designed for use at different speeds by modifying their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coronado Bridge
Coronado may refer to: People * Coronado (surname) * Francisco Vázquez de Coronado (1510–1554), Spanish explorer often referred to simply as "Coronado" * Coronado Chávez (1807–1881), President of Honduras from 1845 to 1847 Places United States * Coronado Butte, a summit in the Grand Canyon, Arizona * Coronado, California, a city * Coronado Heights, Kansas, a hill with a public park * Coronado, Kansas, an unincorporated community * Coronado Cave, Arizona * Coronado Historic Site, New Mexico * Coronado National Forest, in Arizona and New Mexico Mexico * Coronado Municipality, Chihuahua, Mexico * Coronado Islands, island group in Tijuana municipality, Baja California, Mexico * Isla Coronado, an island and volcano in Ensenada municipality, Baja California, Mexico * Isla Coronados, Loreto Municipality, Baja California Sur, Mexico Elsewhere * Coronado, Alberta, Canada, a locality * Vázquez de Coronado (canton), commonly shortened to Coronado, a canton in Costa Rica * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benjamin Baker (engineer)
Sir Benjamin Baker (31 March 1840 – 19 May 1907) was an English civil engineer who worked in mid to late Victorian era. He helped develop the early underground railways in London with Sir John Fowler, but he is best known for his work on the Forth Bridge. He made many other notable contributions to civil engineering, including his work as an expert witness at the public inquiry into the Tay Bridge disaster. Later, he helped design and build the first Aswan Dam. Early life and career He was born in Keyford, which is now part of Frome, Somerset in 1840, the son of Benjamin Baker, principal assistant at Tondu Ironworks, and Sarah Hollis. There is a plaque on their house in Butts Hill. He was educated at Cheltenham Grammar School and, at the age of 16, became an apprentice at Messrs Price and Fox at the Neath Abbey Iron Works. After his apprenticeship he spent two years as an assistant to Mr. W.H. Wilson. Later, he became associated with Sir John Fowler in London. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chepstow Railway Bridge
Chepstow Railway Bridge was built to the instructions of Isambard Kingdom Brunel in 1852. The "Great Tubular Bridge" over the River Wye at Chepstow, which at that point forms the boundary between Wales and England, is considered one of Brunel's major achievements, despite its appearance. It was economical in its use of materials, and would prove to be the design prototype for Brunel's Royal Albert Bridge at Saltash. Although the superstructure has since been replaced, Brunel's tubular iron supports are still in place. It is a Grade II listed structure. Background Brunel had to take the two tracks of the South Wales Railway across the River Wye. The British Admiralty, Admiralty had insisted on a clear span over the river, with the bridge a minimum of above high tide. The span would have to be self-supporting, since although the Gloucestershire side of the river consists of a limestone cliff, the Monmouthshire side is low-lying sedimentary deposit subject to regular flooding. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truss
A truss is an assembly of ''members'' such as Beam (structure), beams, connected by ''nodes'', that creates a rigid structure. In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". A ''two-force member'' is a structural component where force is applied to only two points. Although this rigorous definition allows the members to have any shape connected in any stable configuration, architectural trusses typically comprise five or more triangular units constructed with straight members whose ends are connected at joints referred to as ''Vertex (geometry), nodes''. In this typical context, external forces and reactions to those forces are considered to act only at the nodes and result in forces in the members that are either tension (physics), tensile or compression (physics), compressive. For straight members, moments (torques) are explicitly excluded because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isambard Kingdom Brunel
Isambard Kingdom Brunel ( ; 9 April 1806 – 15 September 1859) was an English civil engineer and mechanical engineer who is considered "one of the most ingenious and prolific figures in engineering history", "one of the 19th-century engineering giants", and "one of the greatest figures of the Industrial Revolution, hochanged the face of the English landscape with his groundbreaking designs and ingenious constructions". Brunel built dockyards, the Great Western Railway (GWR), a series of steamships including the first purpose-built transatlantic steamship, and numerous important bridges and tunnels. His designs revolutionised public transport and modern engineering. Though Brunel's projects were not always successful, they often contained innovative solutions to long-standing engineering problems. During his career, Brunel achieved many engineering firsts, including assisting his father in the building of the first tunnel under a navigable river (the River Thames) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conwy Railway Bridge
The Conwy Railway Bridge carries the North Wales coast railway line across the River Conwy between Llandudno Junction and the town of Conwy. The wrought iron tubular bridge, which is now Grade I listed, was built in the 19th century. It is the last surviving example of this type of design by Stephenson after the original Britannia Bridge across the Menai Strait was partially destroyed in a fire in 1970 and rebuilt as a two-tier truss arch bridge design. The Conwy Railway Bridge was designed by railway engineer Robert Stephenson in collaboration with William Fairbairn and Eaton Hodgkinson. The original plan had been for suspension bridge complementing Thomas Telford's Conwy Suspension Bridge of 1826. After Stephenson's appointment as chief engineer, the design was changed because a suspension bridge was considered unsuitable for trains. Stephenson and his collaborators invented the wrought-iron box-girder structure to bridge the River Conwy in a single span. During ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Stephenson
Robert Stephenson , (honoris causa, Hon. causa) (16 October 1803 – 12 October 1859) was an English civil engineer and designer of locomotives. The only son of George Stephenson, the "Father of Railways", he built on the achievements of his father. Robert has been called the greatest engineer of the 19th century. Stephenson's death was widely mourned, and his funeral afforded marks of public honour. He is buried in Westminster Abbey. Early life Robert Stephenson was born on 16 October 1803, at Willington Quay, east of Newcastle upon Tyne, to George Stephenson and Frances ( Henderson), usually known as Fanny. She was twelve years older than George, and when they met she was working as a servant where George was lodging. After marrying, George and Fanny lived in an upper room of a cottage; George worked as a brakesman on the Stationary steam engine, stationary winding engine on the Quay, and in his spare time he cleaned and mended clocks and repaired shoes.In 1804, George bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Third Mandovi Bridge (38700203495)
Third or 3rd may refer to: Numbers * 3rd, the ordinal form of the cardinal number 3 * , a fraction of one third * 1⁄60 of a ''second'', i.e., the third in a series of fractional parts in a sexagesimal number system Places * 3rd Street (other) * Third Avenue (other) * Highway 3 Music Music theory *Interval number of three in a musical interval **Major third, a third spanning four semitones **Minor third, a third encompassing three half steps, or semitones **Neutral third, wider than a minor third but narrower than a major third **Augmented third, an interval of five semitones **Diminished third, produced by narrowing a minor third by a chromatic semitone *Third (chord), chord member a third above the root *Degree (music), three away from tonic **Mediant, third degree of the diatonic scale **Submediant, sixth degree of the diatonic scale – three steps below the tonic ** Chromatic mediant, chromatic relationship by thirds *Ladder of thirds, similar to the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
