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Hinged Arch Bridge
A hinged arch bridge is one with ''hinges'' incorporated into its structure to allow movement. In structural engineering, a hinge is essentially a "cut in the structure" that can withstand compressive forces. In a steel arch, the hinge allows free rotation, somewhat resembling a common hinge. The most common hinged arch bridge varieties are the two-hinged bridge with hinges at the springing points and the three-hinged bridge with an additional hinge at the crown of the arch; though single-hinged versions exist with a hinge only at the crown of the arch. Hinges at the springing point prevent bending moments from being transferred to the bridge abutments. A triple-hinged bridge is statically determinate, while the other versions are not. Description A fixed arch bridge, that is one without hinges, exerts a bending moment at the abutments and stresses caused by changes of temperature or shrinkage of concrete have to be taken up by the arch. A two-hinged arch has a hinge at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sydney Harbour Bridge Hinge
Sydney is the capital city of the States and territories of Australia, state of New South Wales and the List of cities in Australia by population, most populous city in Australia. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about 80 km (50 mi) from the Pacific Ocean in the east to the Blue Mountains (New South Wales), Blue Mountains in the west, and about 80 km (50 mi) from Ku-ring-gai Chase National Park and the Hawkesbury River in the north and north-west, to the Royal National Park and Macarthur, New South Wales, Macarthur in the south and south-west. Greater Sydney consists of 658 suburbs, spread across 33 local government areas. Residents of the city are colloquially known as "Sydneysiders". The estimated population in June 2024 was 5,557,233, which is about 66% of the state's population. Estimated resident population, 30 June 2017. The city's nicknames include the Emerald City and the Harbour City. There is ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinforced Concrete
Reinforced concrete, also called ferroconcrete or ferro-concrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel reinforcing bars (known as rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion. Description Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and/or structural failure. Modern reinforced concrete can contain varied reinforcing materials made o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CRC Press
The CRC Press, LLC is an American publishing group that specializes in producing technical books. Many of their books relate to engineering, science and mathematics. Their scope also includes books on business, forensics and information technology. CRC Press is now a division of Taylor & Francis, itself a subsidiary of Informa. History The CRC Press was founded as the Chemical Rubber Company (CRC) in 1903 by brothers Arthur, Leo and Emanuel Friedman in Cleveland, Ohio, based on an earlier enterprise by Arthur, who had begun selling rubber laboratory aprons in 1900. The company gradually expanded to include sales of laboratory equipment to chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a graduated scientist trained in the study of chemistry, or an officially enrolled student in the field. Chemists study the composition of ...s. In 1913 the CRC offered a short (116-page) manual called the ''Rubber Handboo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hennepin Avenue Bridge (1888)
The Hennepin Avenue Bridge, or the Steel Arch Bridge, was a hinged arch bridge crossing the Mississippi River at Hennepin Avenue from the west bank of Minneapolis, Minnesota, United States, to Nicollet Island. While described and named as a single bridge the upriver and downstream sides were designed and built separately. It replaced a 1876 suspension bridge, which in turn replaced an 1855 suspension bridge which had been the first span to cross the Mississippi. The northernmost section was built in 1888 and the southern section was built in 1891. After receiving renovations in 1897, 1931, and 1954, the bridge's northern and southern sections were demolished and replaced in 1988 and 1989, respectively, as they were replaced by the current Hennepin Avenue Bridge. Description The bridge, a century old at its demolition, had been designed and constructed in two linear halves. The northern, upstream half was built first. It was a two-span triple two-hinged arch design; that is, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch Bridge (Bellows Falls)
The Bellows Falls Arch Bridge was a three-hinged steel through arch bridge over the Connecticut River between Bellows Falls, Vermont and North Walpole, New Hampshire. It was structurally significant as the longest arch bridge in the United States when it was completed in 1905. The bridge was built to circumvent an existing toll bridge and prevent people from using the Boston and Maine Railroad bridge, a practice the railroad preferred to discourage. History Due to industrial and transportation expansion, residential needs in the Bellows Falls and Walpole area expanded in the late 1800s. The only means of crossing the river was provided by the Tucker Toll Bridge and the Sullivan Railroad Bridge. The Tucker Toll Bridge was a Town lattice truss covered bridge completed in 1840, which was acquired by the towns in 1904 and free thereafter.Hayes, pp. 269–270 (plus plate) The Sullivan Railroad Bridge was originally built by the Sullivan Railroad,The Sullivan Railroad was acq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hradecky Bridge
The Hradecky Bridge () is a footbridge spanning the Ljubljanica River in Ljubljana, the capital of Slovenia. It connects Hrenova Street in the Trnovo District with the Prule neighbourhood of the Center District. One of the first hinged arch bridges in the world, and the first (and only preserved) cast iron bridge in Slovenia, it was praised as a technical achievement at its construction in 1867, as well as for its elegance, modernity, and cost-effectiveness. The bridge's modular construction has made it relatively easy to relocate, and it has been moved twice. By virtue of its location on the route used to transport decedents from Ljubljana's main hospital to the city mortuary (between 1931 and 2010), it gained the somber nickname "Bridge of the Dead" (), which remains in colloquial use. The bridge was manufactured according to the plans of engineer Johann Hermann from Vienna at the Auersperg iron foundry in Dvor near Žužemberk, and was installed as the first cast iron b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Wilhelm Schwedler
Johann Wilhelm Schwedler (23 June 1823, Berlin – 9 June 1894, Berlin) was a German civil engineer and civil servant who designed many bridges and public buildings and invented the Schwedler truss and the Schwedler cupola. He is an author of Schwedler's theorem, a formula defining relation between shear force and bending moment. Life and career Schwedler was the son of a cabinetmaker who died when he was still in school; his brother, already a construction supervisor, made it possible for him to finish his education at the City Trade School in 1842. After a further required examination in Latin to complete the equivalent of a lower-level '' Gymnasium'' education, he spent the next ten years training as a surveyor, studying for examinations in that and in road construction, studying for a year at the Berlin Academy of Construction, and completing the examinations to be a certified building inspector and construction supervisor. One of his practical examinations was waived a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal Saint-Denis
The Canal Saint-Denis () is a canal in Paris, France that is in length. The canal connects the Canal de l'Ourcq, at a point north-northwest of the Bassin de la Villette in the 19th arrondissement of Paris, 19th arrondissement, with the suburban municipalities of Saint-Denis, Seine-Saint-Denis, Saint-Denis and Aubervilliers in the Department (administrative division), department of Seine-Saint-Denis. There are seven locks along the canal's route, and, near Saint-Denis, the canal discharges into the Seine. In 1802 Napoleon I of France, Napoléon Bonaparte issued a decree for the construction of the canal to both expedite shipping and reduce the number of ships and barges sailing up and down the Seine through the center of Paris. Contracts to build and operate the canals in the Île-de-France were granted to private banking firms. These contracts required the city of Paris to purchase land, and the merchant-bankers who won the contracts, Roman Vassal, Lafitte, André, and Cottier, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glulam
Glued laminated timber, commonly referred to as glulam, or sometimes as GLT or GL, is a type of structural engineered wood product constituted by layers of dimensional lumber bonded together with durable, moisture-resistant structural adhesives so that all of the grain runs parallel to the longitudinal axis. In North America, the material providing the laminations is termed ''laminating stock'' or ''lamstock''. History The principles of glulam construction are believed to date back to the 1860s, in the assembly room of King Edward VI College, a school in Southampton, England. The first patent emerged in 1901 when Otto Karl Freidrich Hetzer, a carpenter from Weimar, Germany, patented this method of construction. Approved in Switzerland, Hetzer's patent explored creating a straight beam out of several laminations glued together. In 1906 he received a patent in Germany for curved sections of glulam. Other countries in Europe soon began approving patents and by 1922, glulam had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keystone Wye Bridges
Keystone or key-stone may refer to: * Keystone (architecture), a central stone or other piece at the apex of an arch or vault * Keystone (cask), a fitting used in ale casks Companies * Keystone Law, a full-service law firm * Digital Keystone, a developer of digital entertainment software * Keystone Aircraft Corporation * Keystone Bridge Company, an American bridge building company * Keystone (beer brand) * Keystone Camera Company * Keystone (gasoline automobile) * Keystone (steam automobile) * Keystone Pipeline, a crude oil pipeline * Keystone-SDA/Keystone-ATS, a Swiss press agency * Keystone View Company, a US photo agency * Keystone (Berkeley, California), a defunct music club Education * Keystone Academy, a private K–12 school in Shunyi, Beijing, China * Keystone College, a private college in Pennsylvania, United States * Keystone Exam, a standardized test at public schools in Pennsylvania, United States * Keystone School, a private K–12 school in San Antonio, Texas, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineered Wood
Engineered wood, also called mass timber, composite wood, man-made wood, or manufactured board, includes a range of derivative wood products which are manufactured by binding or fixing the strands, particles, fibres, veneers, or boards of wood, together with adhesives, or other methods of fixation to form composite material. The panels vary in size but can range upwards of and in the case of cross-laminated timber (CLT) can be of any thickness from a few inches to or more. These products are engineered to precise design specifications, which are tested to meet national or international standards and provide uniformity and predictability in their structural performance. Engineered wood products are used in a variety of applications, from home construction to commercial buildings to industrial products. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
