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Types of bridges essay
5 types of bridges and notes about them
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Bridge Structures and The Use of Geometry in Their Design
What is a bridge? A bridge is a structure providing continuous passage over a body of water, roadway, or valley. Every bridge looks different from the another. Their bridge structure is different. There are nine types of main bridges. Bridge engineers use a lot of geometry to help them design the different bridges. Without geometry, the bridges would not be safe.
Bridges have been around for a long time. The earliest bridges were probably formed by laying one or more logs across a brook or by stretching ropes or cables across a narrow valley. Those types of bridges are still in use. Wooden-beam bridges appear to have been the most common type known to the ancients, although according to the tradition a brick-arch bridge was built about 1800 BC in Babylon. Other forms, such as simple suspension and cantilever bridges, are known to have been used in ancient India, China, and Tibet. Pontoon bridges were used in the military expeditions of the Persian monarchs Darius I and Xerxes I.
The Romans built many timber-trestle bridges. Surviving roman bridges, however usually have a level road supported on one or more semicircular stone arches. One of the most famous bridges would be The Pont du Gard at Nimes, France. It has three tiers of arches rising 155 feet above the Gard River, spans a distance of 855 feet. It was built in the late...
The Jericho Covered Bridge in Kingsville, Maryland was built in 1865 and restored in 1982. The bridge is 100 feet long and cased in cedar planks and timber beams. Legend has it that after the Civil War many lynchings occurred on the bridge. Passersby were supposedly captured on the bridge and hung from the upper rafters. The bridge is very close to my house and I have driven over it several times. The storyteller, age 19, also lives a couple minutes away from the bridge. He has lived in Kingsville, Maryland his entire life. He recalled a dramatic story he had heard from his older brother involving the haunted bridge.
The bridge, Prince Edward Viaduct located in Toronto, Ontario and the Roman bridge, Pont du Gard, located in Vers-Pnt-du-Gard, Gard, France, are both arch bridges that were both built using the development of an arch. The arches on Prince Edward Viaduct and Pont du Gard provide flexibility and assists the overall stability of the structure. Although, the Roman arch bridge was built in 1st c BCE, the arch structure have been improved and was used to built the Prince Edward Viaduct, that was opened in 1918.
People who thinks of Thornton Wilder primarily in terms of his classic novella “Our Town,” The Bridge of San Luis Rey will seem like quite a switch. For one thing, he has switched countries; instead of middle America, he deals here with Peru. He has switched eras, moving from the twentieth century back to the eighteenth. He has also dealt with a much broader society than he did in “Our Town,” representing the lower classes and the aristocracy with equal ease. But despite these differences, his theme is much the same; life is short, our expectations can be snuffed out with the snap of a finger, and in the end all that remains of us is those we have loved.
A solitary triumphal arch can hardly give aesthetic satisfaction unless its proportions are in tune with its surroundings, and the Romans do not seem to have given much thought to that aspect. The true triumphal arches are thus those which support the bridges and aqueducts that have survived (n.d. para. 6).
The results show that the bridge in Case 1 collapsed under 44% of the total applied load with 0.097 inches bending displacement and 0.45 inches buckling displacement, as shown in Figs 10 -11. The bridge collapsed due to the huge lateral movement at the top of the webs, which caused a loss of stability and ability of the webs to carry any load, Figs 12-13. The value of the bending displacement is small compared to the value of the buckling displacement because almost no bending moment was created under this situation, since the webs would not be able to carry the load and transfer it vertically to the bearing support.
The bridge model is a three span bridge with 60, 80 and 60. The carriageway is 7 m wide by 1.0 m wide sidewalks along each position. There are in situ diaphragm abutments and pier. The superstructure is built integral with the base. The foundations of the bridge are precast concrete piles with in-situ pile-caps. To avoid unnecessary reactions resulting from thermal expansion of the platform, the abutments are taken as small batteries and flexible enough. Although not enough to fill the back foot diaphragms to resist forces of longitudinal acceleration and braking.
This report covers the superstructure design of the new US 69 Bridge proposal along with a cost estimate for this portion of the project. The old bridges will be replaced with a new four-lane bridge along with a shared use path. The dimensions of this bridge are 77 feet across and 2250 feet in length. Traffic barriers will be placed along the edge, between traffic directions and between traffic and the shared use path.
It is common for different writers and filmmakers to place tension into their own works in order to inspire different characters into action or to get certain events to occur. In Ambrose Bierce’s short novel, “An Occurence at Owl Creek Bridge,” Bierce makes sure to include this tension surrounding Peyton Farquhar and regarding his hanging using vivid descriptions. At the end of the story, it is revealed in a twist ending that his “escape” was just an illusion and he had really been hung. Robert Enrico’s short film adaptation, An Occurence at Owl Creek Bridge, tries to portray and imitate the tension that was stored in Bierce’s piece. Subsequently, Enrico attempts to show this tension visually and audibly, and uses different camera shots and
Uses: Was used to build underwater structures, sort of like aqueducts. It was also used to construct well-designed buildings which still stand today.
Completed in 1850 Brittania Bridge was the brainchild of Robert Stephenson and at the time was at the cutting edge of civil engineering, with all aspects of construction being on an unprecedented scale. Construction began in 1846 and was completed by 1850, it was intended that the bridge carry the Chester and Holyhead railway across the Menai Strait. Brittania Bridge had to be a tubular bridge to meet the criteria set by the board of admiralty, that the span of the bridge should be at least 100ft above the Menai Straits at all points. This was the first of many issues met and overcome during the conception and construction of the bridge.
There are many advantages to using a suspension bridge over other types of bridges. They are very economic in the fact that suspension bridges are very long in proportion to the amount of materials needed to make a suspension bridge. Suspension bridges are usually made up of only a minimum number of materials to be made. Considering the bridges only need limited materials and are fairly cheap, they take a long time to make however. They are incredibly versatile considering they can be build virtually in any location, considering all you need for the bridge is two support towers on each end of the bridge. They are also capable of spanning huge distances, anywhere from 2,000 feet to 13,000 feet.
...The Roman engineers maintained a rather constant downward slope, from the mountains to the city. The Roman army also built massive bridges, capable of supporting great weight. Many time an aqueduct and a bridge would be built on top of one another. This would obviously save a great deal of time and money. Roman bridges were especially important in the transportation on military units around the empire.
Truss bridges can be built three different ways—as a pony bridge, through bridge, or deck bridge. A pony bridge, or a bridge in which the bracing is only on the sides and on top of the deck, are most often used when having a lighter load as there
Eddie considers Catherine as a little project "I supported you this far I want to support you a little more". As a result Eddie finds it hard to let go of Catherine. This is shown by the fact that is takes Eddie a while to be persuaded by B. that the work is the best thing. Eddie is worried that once Catharine has her job she will get her own place and they will never see her again.
This class has examined the various accomplishments of ancient Rome, many that have been carried on throughout time and influenced numerous cultures around the world. Amongst those accomplishments were the development of concrete and the utilization of arches. This paper will examine the Roman development of both concrete and the infamous concrete arch that is utilized in many modern day structures today.