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Design concept of bridge
The physics of bridge design
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Bridge Design Concept
Our bridge consists of three levels supported by 1" high cylinders to support each level. On each level we will have rows of both three and four cylinders extending across the middle. Each cylinder will be stacked on another, evenly offset and centered to gain support. Our bridge will be 28" X 2 -7/8". The length of our bridge is probably the biggest and most significant contributor to our outcome. The desk table gap is 14" long, while our bridge length is 28" long. This shows that we would only be testing a small portion of our long bridge. It is significant because we have the advantage of having twice the amount of supporters, while we will be only testing a small portion of our bridge. With all of our cylinders we know that this bridge will evenly distribute weight.
Our bridge will span 28" long. Our main supporting system is in the shape of a cylinder. We chose the cylinder because it is capable of supporting a large amount of weight. Each cylinder will brushed with an outer coat of Elmer's Glue to increase the cylinder's strength. The bridge will consist of three levels. Each level will be supported by evenly spaced 1" X ½" cylinders. The cylinders on the second level will be offset from the cylinders above and below it. This design will ensure the weight on the bridge will be evenly distributed. The bridge will be incased on all sides with an outer sheet of paper to increase weight distribution.
In our design, we feel that the geometric shapes and the dimensions we chose will greatly affect the outcome of our bridge. We expect this bridge to hold a great amount of weight because our cylinders will be reinforced and backed up by one another. Since our bridge has stacks and multiple levels, we expect it to be strong. When we stack the weights onto our bridge, the offset cylinders will act like triangles, evenly distributing weight in a fine pattern.
Have you ever thought about driving over a suspension bridge held up by cables? That’s what the Mackinac Bridge is. With the building of the Mackinac Bridge there has been many positive effects that have come out of it.
Before continuing much farther, there are a few terms needing defined. First and foremost are the two main forces that act upon the boomilever, tension and compression. Tension is the force acting upon the side of the boomilever that is being “pulled” away from the wall, or the top side. On the other end of the spectrum is compression, which is the force acting on the side of the boomilever being pushed toward the wall, or the bottom of the device. Generally, compression is the main concern in building. Boomilevers are most commonly built as right triangles, in order for them to withstand the most force. Naturally this creates a hypotenuse, and also helps to define the device. If the tension member is the hypotenuse, then the device is known as a “tension boomilever.” In contrast, if the compression member is the hypotenuse then it is known as a “compression boomilever.” When the testing of the boomilever begins, a weight is put on the side farthest away from the base, or the distal end. This ...
“It was designed with a twenty-two foot roadway and one five-foot sidewalk” (Silver). The silver bridge is a very long bridge. “An eye-bar is a long steel plate having large circular ends with an "eye" or hole through which a pin is used to connect to other eyebars (to make a chain) or to other parts of the bridge.” according to Richard Fields. The whole bridge was built using the eye-bar suspension.
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.
At the time of its construction in 1929, the Ambassador Bridge was the largest spanned suspension bridge at 564 meters until the George Washington Bridge was built. It was an engineering masterpiece at the time. The total bridge length is 2,286 meters and rises to 118 meters above the river. Suspension cables support the main span of the Ambassador Bridge and the main pillars under the bridge are supported by steel in a cantilever truss structure. In total, the McClintic-Marshall masterpiece is comprised of 21,000 tons of steel. The immense socio-economical impact that the Ambassador Bridge has on transportation and trade is imperative for daily interaction between the Un...
Bering Land Bridge- during it’s time of existence the bridge was a major factor in migration from Asia to North America; made travel easier because it was on land instead of having to travel by boat
Following the collapse of the I-35 Bridge, other bridges in the country, with similar construction designs, were scrutinized. According to federal statistics, more than 70,000 of the 607,363 or roughly 12 percent of the bridges in the United States are classified as “structurally deficient.”
According to Suspension bridges: Concepts and various innovative techniques of structural evaluation, “During the past 200 years, suspension bridges have been at the forefront in all aspects of structural engineering” (“Suspension”). This statement shows that suspension bridges have been used for over 200 years, and that people are still using them today because they are structurally better bridges. This paper shows four arguments on the advantages of suspension bridges, and why you should use one when building a bridge. When deciding on building a suspension bridge, it has many advantages such as; its lightness, ability to span over a long distance, easy construction, cost effective, easy to maintain, less risk
The area of where the bridge was to cross the Ohio River was said to be one of the hardest places to build but came with some advantages. The section of the river had a solid rock base for the supporting pier to be built on. Since the engineers knew they could build a pier that would not settle they decided on a continuous bridge design. This design type distributes the weight so the steel trusses could be smaller and riveted together. This alone saved an estimates twenty percent of steel that was originally thought to be need to make the bridge cutting down the cost. The two continuous trusses span a collective 1,550 feet across the water. With addition of the north and south approach viaducts, for trains to go under the bridge, the superstructure’s total length is 3,463 feet. The bridge was made to hold two sets of tracks making the width 38 feet and 9 inches. The design called for 27,000 cubic yards of concrete and 13,200 tons of steel with some members being four foot square beams that span a distance of seventy feet. The design was the first step in a long process that would take several years to
Since humans are mortal, the sensation of pain is integral to the human condition. On one hand, pain alerts the body of a danger that is threatening its overall well-being; however, pain can be used as a means of torture to break the psyche or willpower of someone. As Lancelot races to save his queen from the evil Méléagant, he encounters the Sword Bridge. This Bridge is notorious for its slender construction, making it impossible for one
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.
The bridge was designed at a time when America was moving toward streamline products, this included the design of bridges. The Tacoma Narrows Bridge was a sleek, graceful looking suspension bridge. Suspension bridges consist of many cables anchored...
The Golden Gate Bridge is a suspension bridge, one of the longest in the world. A suspension
In her essay,”Importance of the Golden Gate Bridge,” Stephanie Stiavetti suggest that “It maintained this point of pride for nearly 25 years until the Verrazano- Narrows Bridge was built in New York in 1964. Today, this historic San Francisco landmark holds its place as the second largest suspension bridge in the country, behind Verrazano Narrows.” Back then, experts thought that it would be impossible to build a bridge across the tides and currents in that area because strong currents and tides would make construction extremely difficult and dangerous. The water is over 500 feet deep in the center of the channel, and along with the area's strong winds and thick fog, the idea of building a bridge there seemed nearly impossible. Despite all of the problems of building a bridge across the Golden Gate, Joseph Strauss was named as lead engineer for the project. Construction began January 5, 1933, and in the end cost more than $35 million to
According to the theory of consequentialism, “an action is morally required just because it produces the best overall results” (Landau, 2015, p.121). In this view, an individual’s action is deemed moral only if it produces the optimific result in any situation. In the article “Framing Effect in the Trolley Problem and Footbridge Dilemma,” the authors introduced the “Footbridge Dilemma”, wherein an individual is given the option to save the lives of five workers by pushing an innocent man towards an incoming trolley (Cao, et. al, 2017, p. 90). In this dilemma, consequentialism suggests that it is moral to push the innocent man and save the workers. Even though pushing the man would kill him, the action would yield the optimific outcome in that