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Skew Arch
A skew arch (also known as an oblique arch) is a method of construction that enables an arch bridge to span an obstacle at some angle other than a right angle. This results in the faces of the arch not being perpendicular to its abutments and its plan view being a parallelogram, rather than the rectangle that is the plan view of a regular, or "square" arch. In the case of a masonry skew arch, the construction requires precise stonecutting, as the cuts do not form right angles, but once the principles were fully understood in the early 19th century, it became considerably easier and cheaper to build a skew arch of brick. The problem of building skew arch masonry bridges was addressed by a number of early civil engineers and mathematicians, including Giovanni Barbara (1726), William Chapman (1787), Benjamin Outram (1798), Peter Nicholson (1828), George Stephenson (1830), Edward Sang (1835), Charles Fox (1836), George W. Buck (1839) and William Froude (''c.'' 1844). History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Sang
Edward Sang FRSE FRSSA LLD (30 January 1805 – 23 December 1890) was a Scottish mathematician and civil engineer, best known for having computed large tables of logarithms, with the help of two of his daughters. These tables went beyond the tables of Henry Briggs, Adriaan Vlacq, and Gaspard de Prony. Personal life Sang was born in Kirkcaldy on 30 January 1805, the son of Jean Nicol and Edward Sang, Provost of Kirkcaldy. He attended the Subscription School in Kirkcaldy and from there went on to study at the University of Edinburgh. In the 1830s he is listed as a teacher of mathematics living at 32 St Andrew Square in Edinburgh. He was elected a Fellow of the Royal Society of Edinburgh in May 1836. In 1884 he was awarded their Makdougall-Brisbane Prize. He served as their Vice President 1883 to 1885. In 1841 he took the role of Professor of Mechanical Science at Manchester New College. In 1854 he briefly served as Professor of Mechanical Science in Constantinople. He returned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navigable Aqueduct
Navigable aqueducts (sometimes called water bridges) are bridge structures that carry navigable waterway canals over other rivers, valleys, railways or roads. They are primarily distinguished by their size, carrying a larger cross-section of water than most water-supply aqueducts. Roman aqueducts were used to transport water and were created in Ancient Rome. The long steel Briare aqueduct carrying the Canal latéral à la Loire over the River Loire was built in 1896. It was ranked as the longest navigable aqueduct in the world for more than a century, until the Magdeburg Water Bridge in Germany took the title in the early 21st century. Early aqueducts such as the three on the Canal du Midi had stone or brick arches, the longest span being on the Cesse Aqueduct, built in 1690. But, the weight of the construction to support the trough with the clay or other lining to make it waterproof made these structures clumsy. In 1796 Longdon-on-Tern Aqueduct, the first large cast iron aqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pietà, Malta
Pietà ( mt, Tal-Pietà) is a small town in the Central Region of Malta, located near the outskirts of the capital city Valletta. Pietà is the suburb next-closest to the capital after Floriana. Its name is derived from Italian and signifies "Mercy." Etymology The name of Pietà in Italian means Mercy. Description Malta's former national hospital, St. Luke's, is located in Tal-Pietà. Tal-Pietà is a coastal town, and an old boathouse of notable historic interest (now in use as a restaurant) is located on the waterfront. The town is named after a Church of Our Lady of Sorrows dating back to the 17th and 18th centuries which is still in active use today. A couple of streets nearby bear the names of St. Augustine and his mother, St. Monica. Tal-Pietà was a departure point for the Gozo ferry before the construction of a yacht marina. The patrol boat depot of the Armed Forces of Malta is located at the Hay Wharf in nearby Floriana. Also within the boundaries of Pietà are St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malta
Malta ( , , ), officially the Republic of Malta ( mt, Repubblika ta' Malta ), is an island country in the Mediterranean Sea. It consists of an archipelago, between Italy and Libya, and is often considered a part of Southern Europe. It lies south of Sicily (Italy), east of Tunisia, and north of Libya. The official languages are Maltese and English, and 66% of the current Maltese population is at least conversational in the Italian language. Malta has been inhabited since approximately 5900 BC. Its location in the centre of the Mediterranean has historically given it great strategic importance as a naval base, with a succession of powers having contested and ruled the islands, including the Phoenicians and Carthaginians, Romans, Greeks, Arabs, Normans, Aragonese, Knights of St. John, French, and British, amongst others. With a population of about 516,000 over an area of , Malta is the world's tenth-smallest country in area and fourth most densely populated sovereign cou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floriana Lines
The Floriana Lines ( mt, Is-Swar tal-Furjana) are a line of fortifications in Floriana, Malta, which surround the fortifications of Valletta and form the capital city's outer defences. Construction of the lines began in 1636 and they were named after the military engineer who designed them, Pietro Paolo Floriani. The Floriana Lines were modified throughout the course of the 17th and 18th centuries, and they saw use during the French blockade of 1798–1800. Today, the fortifications are still largely intact but rather dilapidated and in need of restoration. The Floriana Lines are considered to be among the most complicated and elaborate of the Hospitaller fortifications of Malta. Since 1998, they have been on the tentative list of UNESCO World Heritage Sites, as part of the ''Knights' Fortifications around the Harbours of Malta''. History Background, controversy and construction The city of Valletta was founded on 28 March 1566 by Jean de Valette, the Grand Master of the O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway
Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a prepared flat surface, rail vehicles (rolling stock) are directionally guided by the tracks on which they run. Tracks usually consist of steel rails, installed on sleepers (ties) set in ballast, on which the rolling stock, usually fitted with metal wheels, moves. Other variations are also possible, such as "slab track", in which the rails are fastened to a concrete foundation resting on a prepared subsurface. Rolling stock in a rail transport system generally encounters lower frictional resistance than rubber-tyred road vehicles, so passenger and freight cars (carriages and wagons) can be coupled into longer trains. The operation is carried out by a railway company, providing transport between train stations or freight customer facilit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Rome
In modern historiography, ancient Rome refers to Roman civilisation from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. It encompasses the Roman Kingdom (753–509 BC), Roman Republic (509–27 BC) and Roman Empire (27 BC–476 AD) until the fall of the western empire. Ancient Rome began as an Italic settlement, traditionally dated to 753 BC, beside the River Tiber in the Italian Peninsula. The settlement grew into the city and polity of Rome, and came to control its neighbours through a combination of treaties and military strength. It eventually dominated the Italian Peninsula, assimilated the Greek culture of southern Italy ( Magna Grecia) and the Etruscan culture and acquired an Empire that took in much of Europe and the lands and peoples surrounding the Mediterranean Sea. It was among the largest empires in the ancient world, with an estimated 50 to 90 million inhabitants, roughly 20% of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denbigh Hall Bridge On The London And Birmingham Railway
Denbigh (; cy, Dinbych; ) is a market town and a community in Denbighshire, Wales. Formerly, the county town, the Welsh name translates to "Little Fortress"; a reference to its historic castle. Denbigh lies near the Clwydian Hills. History Denbigh Castle, together with its town walls, was built in 1282 by order of King Edward I. The Burgess Gate, whose twin towers adorn the symbol on Denbigh's civic seal, was once the main entrance into the town. The first borough charter was granted to Denbigh in 1290, when the town was still contained within the old town walls. It was the centre of the Marcher Lordship of Denbigh. The town was involved in the revolt of Madog ap Llywelyn in 1294–1295; the castle was captured in the autumn, and on 11 November 1294 a relieving force was defeated by the Welsh rebels. The town was recaptured by Edward I in December. Denbigh was also burnt in 1400 during the revolt of Owain Glyndŵr. During the Wars of the Roses (1455-1487), the town w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skew Bridge - Geograph
Skew may refer to: In mathematics * Skew lines, neither parallel nor intersecting. * Skew normal distribution, a probability distribution * Skew field or division ring * Skew-Hermitian matrix * Skew lattice * Skew polygon, whose vertices do not lie on a plane * Infinite skew polyhedron * Skew-symmetric graph * Skew-symmetric matrix * Skew tableau, a generalization of Young tableau * Skewness, a measure of the asymmetry of a probability distribution * Shear mapping In science and technology *Skew, also synclinal or gauche in alkane stereochemistry *Skew ray (optics), an optical path not in a plane of symmetry * Skew arch, not at a right angle In computing * Clock skew * Transitive data skew, an issue of data synchronization In telecommunications * Skew (fax), unstraightness * Skew (antenna) a method to improve the horizontal radiation pattern Other uses * Volatility skew, in finance, a downward-sloping volatility smile * Skew flip turnover Skew may refer to: In mathematics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Store Street Aqueduct
The Store Street Aqueduct in central Manchester, England, was built in 1798 by Benjamin Outram on the Ashton Canal. A Grade II* listed building it is built on a skew of 45° across Store Street, and is believed to be the first major aqueduct of its kind in Great Britain and the oldest still in use today. Aqueduct The aqueduct was constructed to cross Shooters Brook. It is built of stone with large voussoirs and retaining walls of coursed masonry and is wide with triangular buttresses. The brook was culverted in about 1805 and Store Street was built over it. The canal is about wide and deep. The arch has a square span and a skew span rising above road level. Generally, where a canal (or later a railway) crossed a road, or vice versa, the road would be diverted to cross at right angles. It had not always been acceptable but attempts to build masonry arch bridges at an angle, or "skew" of greater than about 15 degrees, had proved unsatisfactory. The method up to that tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
