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Roman Bridge
The ancient Romans were the first civilization to build large, permanent bridges. Early Roman bridges used techniques introduced by Etruscan immigrants, but the Romans improved those skills, developing and enhancing methods such as arches and keystones. There were three major types of Roman bridge: wooden, pontoon, and stone. Early Roman bridges were wooden, but by the 2nd century stone was being used. Stone bridges used the arch as their basic structure, and most used concrete, the first use of this material in bridge-building. History Following the conquests of Tarquinius Priscus, Etruscan engineers migrated to Rome, bringing with them their knowledge of bridge-building techniques. The oldest bridge in ancient Rome was the Pons Sublicius. It was built in the 6th century BCE by Ancus Marcius over the Tiber River. The Romans improved on Etruscan architectural techniques. They developed the voussoir, stronger keystones, vaults, and superior arched bridges. Roman arch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puente Romano Y Puente De Lusitania, Mérida
Puente, a word meaning '' bridge'' in Spanish language, may refer to: People * Puente (surname) Places *La Puente, California, USA * Puente Alto, city and commune of Chile * Puente de Ixtla, city in Mexico *Puente Genil, village in the Spanish province of Córdoba *Puente La Reina, town and municipality located in the autonomous community of Navarra, in northern Spain * Puente Nacional, Veracruz, municipality in Mexico *Puente Piedra District, district in Peru * Puente, Camuy, Puerto Rico, a barrio * Puentes de García Rodríguez, municipality in Ferrolterra, in northwestern Spain * West Puente Valley, California, USA Bridges and transport * Puente Aranda (TransMilenio), mass-transit system of Bogotá, Colombia * Puente Centenario, major bridge crossing the Panama Canal * Puente Colgante, transporter bridge in Spain * Puente Colgante, a suspension bridge in Manila, Philippines * Puente de Boyacà, bridge in Colombia *Puente La Amistad de Taiwán, Taiwan-Costa Rica's Friendship Bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Segmental Arch
A segmental arch is a type of arch with a circular arc of less than 180 degrees. It is sometimes also called a scheme arch. The segmental arch is one of the strongest arches because it is able to resist thrust. To prevent failure, a segmental arch must have a rise that is equal to at least one-eighth the width of the span. Segmental arches with a rise that is less than one-eighth of the span width must have a permanent support or frame beneath the arch to prevent failure. As far as is known, the ancient Romans were the first to develop the segmental arch. The closed- spandrel Pont-Saint-Martin bridge in the Aosta Valley in Italy dates to 25 BC. The first open-spandrel segmental arch bridge is the Anji Bridge over the Xiao River The Xiao River ( ) is the Main Stream of the upper Xiang River located in Yongzhou, Hunan. As of 2011 Water Census of China, it has a length of from the headwaters to the confluence in the Ping Island of Yongzhou with the Xiang River West Branch ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Economy
The study of the Roman economy, which is, the economies of the ancient city-state of Rome and its empire during the Republican and Imperial periods remains highly speculative. There are no surviving records of business and government accounts, such as detailed reports of tax revenues, and few literary sources regarding economic activity. Instead, the study of this ancient economy is today mainly based on the surviving archeological and literary evidence that allow researchers to form conjectures based on comparisons with other more recent pre-industrial economies. During the early centuries of the Roman Republic, it is conjectured that the economy was largely agrarian and centered on the trading of commodities such as grain and wine.Garnsey, Peter, et al. The Roman Empire: Economy, Society and Culture. 2nd ed., University of California Press, 2015, www.jstor.org/stable/10.1525/j.ctt9qh25h. Financial markets were established through such trade, and financial institutions, which ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Of Ancient Rome
The military of ancient Rome, according to Titus Livius, one of the more illustrious historians of Rome over the centuries, was a key element in the rise of Rome over "above seven hundred years" from a small settlement in Latium to the capital of an empire governing a wide region around the shores of the Mediterranean, or, as the Romans themselves said, ''mare nostrum'', "our sea". Livy asserts: :... if any people ought to be allowed to consecrate their origins and refer them to a divine source, so great is the military glory of the Roman People that when they profess that their Father and the Father of their Founder was none other than Mars, the nations of the earth may well submit to this also with as good a grace as they submit to Rome's dominion. Titus Flavius Josephus, a contemporary historian, sometime high-ranking officer in the Roman army, and commander of the rebels in the Jewish revolt describes the Roman people as if they were "born readily armed". At the time of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pax Romana
The Pax Romana (Latin for 'Roman peace') is a roughly 200-year-long timespan of Roman history which is identified as a period and as a golden age of increased as well as sustained Roman imperialism, relative peace and order, prosperous stability, hegemonial power, and regional expansion, despite several revolts and wars, and continuing competition with Parthia. It is traditionally dated as commencing from the accession of Augustus, founder of the Roman principate, in 27 BC and concluding in 180 AD with the death of Marcus Aurelius, the last of the " Five Good Emperors". Since it was inaugurated by Augustus at the end of the final war of the Roman Republic, it is sometimes also called the Pax Augusta. During this period of about two centuries, the Roman Empire achieved its greatest territorial extent and its population reached a maximum of up to 70 million people. According to Cassius Dio, the dictatorial reign of Commodus, later followed by the Year of the Five Emperors a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pons Aemilius
The Pons Aemilius ( it, Ponte Emilio), today called Ponte Rotto, is the oldest Roman stone bridge in Rome, Italy. Preceded by a wooden version, it was rebuilt in stone in the 2nd century BC. It once spanned the Tiber, connecting the Forum Boarium with Trastevere; a single arch in mid-river is all that remains today, lending the bridge its name ''Ponte Rotto'' ("Broken bridge"). History Classical antiquity The oldest piers of the bridge were probably laid when the Via Aurelia was constructed in the mid-2nd century BC.Claridge (2010), p. 258. According to Titus Livius, there existed a bridge in the same location as the Pons Aemilius in 192 BC. The first stone bridge was constructed by Censor Marcus Fulvius Nobilior several years after that, in 179 BCLivy 40.51.4 (although it was not completed until 151 BC).Forney & Hobart (1892), p. 117. The bridge's piers date from this early period, although its arches were constructed by Scipio Aemilianus and L. Mummius in 142 BC. The br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italic Peoples
The Italic peoples were an ethnolinguistic group identified by their use of Italic languages, a branch of the Indo-European language family. The Italic peoples are descended from the Indo-European speaking peoples who inhabited Italy from at least the second millennium BC onwards. Latins achieved a dominant position among these tribes, establishing ancient Roman civilization. During this development, other Italic tribes adopted Latin language and culture in a process known as Romanization. This process was eventually extended to certain parts of Europe. The ethnic groups which emerged as a result are known as Romance peoples. Classification The Italics were an ethnolinguistic group who are identified by their use of the Italic languages, which form one of the branches of Indo-European languages. Outside of the specialised linguistic literature, the term is also used to describe the ancient peoples of Italy as defined in Roman times, including pre-Roman peoples like the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonardo Fernández Troyano
Leonardo is a masculine given name, the Italian, Spanish, and Portuguese equivalent of the English, German, and Dutch name, Leonard. People Notable people with the name include: * Leonardo da Vinci (1452–1519), Italian Renaissance scientist, inventor, engineer, sculptor, and painter Artists * Leonardo Schulz Cardoso, Brazilian singer * Emival Eterno da Costa (born 1963), Brazilian singer known as Leonardo * Leonardo de Mango (1843–1930), Italian-born Turkish painter * Leonardo DiCaprio (born 1974), American actor * Leonardo Pieraccioni (born 1965), Italian actor and director Athletes * Leonardo Araújo (born 1969), usually known as Leonardo, Brazilian World Cup-winning footballer, and former sporting director of Paris Saint Germain * Leonardo Fioravanti (born 1997), Italian surfer * Leonardo Lourenço Bastos (born 1975), Brazilian footballer * Leonardo Bittencourt, German footballer * Leonardo Bonucci (born 1987), Italian footballer * Leonardo Candi (born 1997) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Peter Oleson
John Peter Oleson (born 1946) is a Canadian classical archaeologist and historian of ancient technology. His main interests are the Roman Near East, maritime archaeology (particularly Roman harbours), and ancient technology, especially hydraulic technology, water-lifting devices, and Roman concrete construction. Life Born in 1946 in Hackensack, New Jersey, United States, Oleson was schooled at the Loomis School in Windsor, Connecticut (1960–64). He received his BA in Classics at Harvard University in 1967, where he studied with Herbert Bloch. Oleson received his MA (1971) and PhD (1973) in Classical Archaeology at Harvard University, working in particular with George M.A. Hanfmann and David Mitten. From 1973–1976 Oleson taught in the Classics Department of Florida State University, Tallahassee. Since 1976 he has been a member of the Greek and Roman Studies Department of the University of Victoria, Canada, where he was appointed Distinguished Professor in 2003. He wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentagon
In geometry, a pentagon (from the Greek πέντε ''pente'' meaning ''five'' and γωνία ''gonia'' meaning ''angle'') is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting. A self-intersecting ''regular pentagon'' (or ''star pentagon'') is called a pentagram. Regular pentagons A '' regular pentagon'' has Schläfli symbol and interior angles of 108°. A '' regular pentagon'' has five lines of reflectional symmetry, and rotational symmetry of order 5 (through 72°, 144°, 216° and 288°). The diagonals of a convex regular pentagon are in the golden ratio to its sides. Given its side length t, its height H (distance from one side to the opposite vertex), width W (distance between two farthest separated points, which equals the diagonal length D) and circumradius R are given by: :\begin H &= \frac~t \approx 1.539~t, \\ W= D &= \frac~t\approx 1.618~t, \\ W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clamp (tool)
A clamp is a fastening device used to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure. In the United Kingdom the term cramp is often used instead when the tool is for temporary use for positioning components during construction and woodworking; thus a G cramp or a sash clamp but a wheel clamp or a surgical clamp. There are many types of clamps available for many different purposes. Some are temporary, as used to position components while fixing them together, others are intended to be permanent. In the field of animal husbandry, using a clamp to attach an animal to a stationary object is known as "rounded clamping." A physical clamp of this type is also used to refer to an obscure investment banking term, "fund clamps." Anything that performs the action of clamping may be called a clamp, so this gives rise to a wide variety of terms across many fields. Types Temporary These clamps (or cramps) are used to p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gypsum
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula . It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall. Alabaster, a fine-grained white or lightly tinted variety of gypsum, has been used for sculpture by many cultures including Ancient Egypt, Mesopotamia, Ancient Rome, the Byzantine Empire, and the Nottingham alabasters of Medieval England. Gypsum also crystallizes as translucent crystals of selenite. It forms as an evaporite mineral and as a hydration product of anhydrite. The Mohs scale of mineral hardness defines gypsum as hardness value 2 based on scratch hardness comparison. Etymology and history The word '' gypsum'' is derived from the Greek word (), "plaster". Because the quarries of the Montmartre district of Paris have long furnished burnt gypsum ( calcined gypsum) used for various purposes, this dehydrated gypsum be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
