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Marnan Bridge
Marnan Bridge is a historical bridge in Isfahan, Iran. The current structure of the bridge dates back to the Safavid era, but its foundations are older and possibly as old as the Shahrestan bridge, which dates back to the Sasanian The Sasanian () or Sassanid Empire, officially known as the Empire of Iranians (, ) and also referred to by historians as the Neo-Persian Empire, was the last Iranian empire before the early Muslim conquests of the 7th-8th centuries AD. Named ... era References External links {{Commons, Maarnaan Bridge, Marnan Bridge Bridges in Isfahan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zayandeh River
Zayanderud ( fa, Zāyanderud, script=Latn, from "fertile" or "life giver", and "river"), also spelled as ''Zayandeh-Rood'' or ''Zayanderood'', is the largest river of the Iranian Plateau in central Iran. Geography The Zayandeh starts in the Zard-Kuh subrange of the Zagros Mountains in Chaharmahal and Bakhtiari Province. It flows eastward before ending in the Gavkhouni swamp, a seasonal salt lake, southeast of Isfahan (Esfahan) city. The Zayandeh used to have significant flow all year long, unlike many of Iran's rivers which are seasonal, but today runs dry due to water extraction before reaching the city of Esfahan. In the early 2010s, the lower reaches of the river dried out completely after several years of seasonal dry-outs. The Zayandeh River basin has an area of , an altitude from to , an average rain fall of and a monthly average temperature of to . There are of irrigated land in the Zayandeh River basin, with water derived from the nine main hydraulic units ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isfahan
Isfahan ( fa, اصفهان, Esfahân ), from its Achaemenid empire, ancient designation ''Aspadana'' and, later, ''Spahan'' in Sassanian Empire, middle Persian, rendered in English as ''Ispahan'', is a major city in the Greater Isfahan Region, Isfahan Province, Iran. It is located south of Tehran and is the capital of Isfahan Province. The city has a population of approximately 2,220,000, making it the third-largest city in Iran, after Tehran and Mashhad, and the second-largest metropolitan area. Isfahan is located at the intersection of the two principal routes that traverse Iran, north–south and east–west. Isfahan flourished between the 9th and 18th centuries. Under the Safavids, Safavid dynasty, Isfahan became the capital of Achaemenid Empire, Persia, for the second time in its history, under Shah Abbas the Great. The city retains much of its history. It is famous for its Perso–Islamic architecture, grand boulevards, covered bridges, palaces, tiled mosques, and mina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmenistan to the north, by Afghanistan and Pakistan to the east, and by the Gulf of Oman and the Persian Gulf to the south. It covers an area of , making it the 17th-largest country. Iran has a population of 86 million, making it the 17th-most populous country in the world, and the second-largest in the Middle East. Its largest cities, in descending order, are the capital Tehran, Mashhad, Isfahan, Karaj, Shiraz, and Tabriz. The country is home to one of the world's oldest civilizations, beginning with the formation of the Elamite kingdoms in the fourth millennium BC. It was first unified by the Medes, an ancient Iranian people, in the seventh century BC, and reached its territorial height in the sixth century BC, when Cyrus the Great fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridge
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, and the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge (dating from the 13th century BC, in the Peloponnese) is one of the oldest arch bridges still in existence and use. Etymology The '' Oxford English Dictionary'' traces the origin of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safavid
Safavid Iran or Safavid Persia (), also referred to as the Safavid Empire, '. was one of the greatest Iranian empires after the 7th-century Muslim conquest of Persia, which was ruled from 1501 to 1736 by the Safavid dynasty. It is often considered the beginning of History of Iran, modern Iranian history, as well as one of the gunpowder empires. The Safavid List of monarchs of Persia, Shāh Ismail I, Ismā'īl I established the Twelver denomination of Shia Islam, Shīʿa Islam as the Safavid conversion of Iran to Shia Islam, official religion of the empire, marking one of the most important turning points in the history of Islam. An Iranian dynasty rooted in the Sufi Safavid order founded by Kurdish people, Kurdish sheikhs, it heavily intermarried with Turkoman (ethnonym), Turkoman, Georgians, Georgian, Circassians, Circassian, and Pontic Greeks, Pontic GreekAnthony Bryer. "Greeks and Türkmens: The Pontic Exception", ''Dumbarton Oaks Papers, Vol. 29'' (1975), Appendix II "Geneal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foundation (engineering)
In engineering, a foundation is the element of a structure which connects it to the ground, transferring loads from the structure to the ground. Foundations are generally considered either shallow or deep. Foundation engineering is the application of soil mechanics and rock mechanics (geotechnical engineering) in the design of foundation elements of structures. Purpose Foundations provide the structure's stability from the ground: * To distribute the weight of the structure over a large area in order to avoid overloading the underlying soil (possibly causing unequal settlement). * To anchor the structure against natural forces including earthquakes, floods, droughts, frost heaves, tornadoes and wind. * To provide a level surface for construction. * To anchor the structure deeply into the ground, increasing its stability and preventing overloading. * To prevent lateral movements of the supported structure (in some cases). Requirements of a good foundation The design and the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shahrestan Bridge
The Shahrestan bridge is the oldest bridge on the Zayandeh River in Iran. The foundations date back to the Sasanian era (3rd to 7th century C.E.), but the top was renovated twice, first in the 10th century by the Buyids, then during the 11th century during the Seljuk period. Nevertheless, the architectural style is entirely Sassanian. The bridge consists of two parabolas. The vertical parabola ensures that the middle of the bridge is its highest point. The horizontal parabola produces a bend to the west, strengthening it against the flow of the river. The bridge is 107.8 metres long and an average of 5.2 metres wide. It has two tiers of pointed arches, thirteen large ones spanning the river itself, and eight smaller ones that nest between them. The purpose of the latter is to quicken the flow of water during floods, taking pressure off the structure. The Zayandeh River Zayanderud ( fa, Zāyanderud, script=Latn, from "fertile" or "life giver", and "river"), also spelled as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sasanian
The Sasanian () or Sassanid Empire, officially known as the Empire of Iranians (, ) and also referred to by historians as the Neo-Persian Empire, was the last Iranian empire before the early Muslim conquests of the 7th-8th centuries AD. Named after the House of Sasan, it endured for over four centuries, from 224 to 651 AD, making it the longest-lived Persian imperial dynasty. The Sasanian Empire succeeded the Parthian Empire, and re-established the Persians as a major power in late antiquity alongside its neighbouring arch-rival, the Roman Empire (after 395 the Byzantine Empire).Norman A. Stillman ''The Jews of Arab Lands'' pp 22 Jewish Publication Society, 1979 International Congress of Byzantine Studies ''Proceedings of the 21st International Congress of Byzantine Studies, London, 21–26 August 2006, Volumes 1–3'' pp 29. Ashgate Pub Co, 2006 The empire was founded by Ardashir I, an Iranian ruler who rose to power as Parthia weakened from internal strife and wars with th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
