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2010-10-10
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Foreword Bridging rivers, gorges, narrows, straits, and valleys always has played an important role in the history of human settlement. Since ancient times, bridges have been the most visible testimony of the noble craft of engineers. A bridge can be defined in many ways, but Andrea Palladio, the great 16th century Italian architect and engineer, hit on the essence of bridge building when he said "...bridges should befit the spirit of the community by exhibiting commodiousness, firmness, and delight." In more practical terms, he went on to explain that the way to avoid having the bridge carried away by the violence of water was to make the bridge without fixing any posts in the water. Since the beginning of time, the goal of bridge builders has been to create as wide a span as possible which is commodious, firm, and occasionally delightful
Tower Bridge General · Tower Bridge is a combined bascule and suspension bridge in London, England, over the River Thames. It is close to the Tower of London, which gives it its name. It has become an iconic symbol of London. Design · In the second half of the 19th century, increased commercial development in the East End of London led to a requirement for a new river crossing downstream of London Bridge. · Subway Committee was formed in 1876, chaired by Sir Albert Joseph Altman, to find a solution to the river crossing problem. It opened the design of the crossing to public competition. Over 50 designs were submitted. · Jones' engineer, Sir John Wolfe Barry, devised the idea of a bascule bridge 800 feet (244 m) in length with two towers each 213 feet (65 m) high, built on piers. The central span of 200 feet (61 m) between the towers was split into two
Hello my name is. And for introduction i will give you some clues for my following presentation. I would like you to think guess the object im describing. Golden Gate Bridge connects the city of San Francisco on the northern tip of the San Francisco Peninsula to Marin County as part of US Highway 101 and California State Highway 1 • Total length of Bridge (including approaches): 1.7 miles = 8,981 ft = 2,737 m • Width of Bridge: 90 ft = 27 m • Clearance above water: 220 ft = 67 m • Height of tower above water: 746 ft = 227 m • Height of tower above roadway: 500 ft = 152 m Main reason of building this bridge • Population centers were growing • Traffic congestion at the ferry docks was becoming intolerable • The thought of bridge started to develop in 1872 • The main idea of bridge construction was proposed by Charles Crocker, who
The dam is the largest operating hydroelectric facility in terms of annual generating capacity, generating 94.7 TWh in 2008 and 91.6 TWh in 2009, while the annual generating capacity of the Three Gorges Dam was 80.8 TWh in 2008 and 79.4 TWh in 2009. It is a binational undertaking run by Brazil and Paraguay at the Paraná River on the border section between the two countries, 15 km (9.3 mi) north of the Friendship Bridge. Panama Canal Date started:January 1, 1880 Date finished:January 7, 1914 Location:Isthmus of Panama The Panama Canal is a 77 km ship canal in Panama that joins the Atlantic Ocean and the Pacific Ocean and is a key conduit for international maritime trade. Built from 1904 to 1914, annual traffic has risen from about 1,000 ships in the canal's early days to 14,702 vessels in 2008, measuring a total 309.6 million Panama Canal/Universal Measurement System
THE CITY OF LONDON History The City of London occupies one square mile in the middle of the capital. It once made up entire town of London, surrounded by the wall first built by Romans. The Romans also built a bridge over the Thames and there has been one in the same area ever since. The Roman Londinium grew up on the northern side of the bridge. In AD 61 the native Celtic tribe, led by Queen Boudicca, rose up against the Romans. They burnt down Londinium to the ground and killed most of its inhabitants. Roman armies eventually defeated Boudicca and Londinium was rebuilt. At the end of the fourth century AD the Roman Empire began to crumble and the Roman armies were recalled from Britain to defend Rome itself. Once they had left, tribes such as Angles, Saxons and Jutes invaded and settled in from Holland, Germany and Denmark
unsuccessful. They made their way to the river Thames and sailed up it. The Romans knew it was important to control a crossing point at the river Thames, so they decided to build a settlement on the north bank. Although small settlements had been built on the banks of the Thames, the Romans were the ones who built the first city. They called their city Londinium. The Roman engineers noticed that the point where the swampy river narrowed would make an ideal crossing point, they built London Bridge. Less than 20 years later the native Iceni tribe, led by Queen Boudicca, rose up against the Romans in revenge for mistreatment and burnt Londinium to the ground. The well disciplined Roman army defeated her forces and Londinium was rebuilt. By AD 100 it had also become the capital of the Roman province. A massive wall was built to protect the city from further attacks. The Roman Empire came under increasing attack across Europe and in AD 410 they retreated.
in 1695. The outer case is by Grinling Gibbons. In the North Quire Aisle you can see a sculpture of Mother and Child by Henry Moore. In the South Transept you can see memorials to, amongst others, Nelson and Scott of the Antartic. The Crypt is the largest in Europe and contains memorials to some of the country's greatest men including the tombs of the Duke of Wellington, Admiral Nelson and Sir Christopher Wren whose epitaph says "If you seek his monument look around you". London Bridge A bridge has existed at or near the present site of London Bridge for nearly 2,000 years. The first bridge across the Thames in London was built by the Romans around 50 AD. It was built near the present site of the London Bridge and it was made of wood. The site was chosen because it was the place where the Thames was rather low most of the time. This wooden bridge was destroyed in 60 AD by the army of Queen Boudicca. The new bridge was also built around the place of the present bridge.
The coolest month is January. Winders are seldom below freezing. Rainfall is regular, but most often in the form of drizzle occurring throughout the year. Snow occurs sometimes in winter but rarely settles more than a few millimetres deep. History The origin of London may be dated around the beginning of the 1st century AD, when a Celtic tribe settled near a fordable point of the Thames. L achieved real importance following the Roman conquest under Claudius (43AD). The Romans build a bridge, somewhat east of the present city. This bridge soon was part of a trade road and attracted more and more traders. Soon the flourishing city Londinium came into existence. The Romans rebuilt the town into a centre of great importance. After the Romans withdrew from Britain in the Picts, Scots, Jutes, Angles and Saxons invaded London. It started to expand again under the Saxon kings. London was described as a commercial centre into which goods from all parts of the world flew by land and sea.
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