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Design concept of bridge
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Our task at hand was to build a bridge, but not only that, it was to build an efficient bridge. For it to be an efficient bridge it had to hold more weight, than it weighed. We had to be able to design and build our own bridge. Both of which had to be good, because if either one was subpar, our bridge would not have been efficient. Not only did we have to do that, but we were held to many constraints and rules. The hardest challenge for me was that there were so many variables I could not account for; this was my first time actually building something similar to this. There was also another underlying challenge that came with this project; it was to find out if you were able to work well with a partner, and if you were capable of choosing a good partner. The challenges were complex in a way, at the surface they seemed simple, but were actually much more difficult than expected.
When I first started to design my bridge, I began to think of bridges I had seen in real. That did not go so well, with my memory being vague and the bridges that did come to mind being seamlessly impossible to build, off to the internet I went. I was able to find the three main bridge designs; the Pratt, the Howe, and the Warren. To what I saw I decided that the Howe Bridge was the most structurally sound. So we used that as the base of our idea/design. We added our own flare by dispersing vertical supports throughout our structure. We had decided to make the side and of our bridge with balsa wood and make the bottom of it out of Popsicle. We wanted to fortify the bottom, so we turned the Popsicle stick on its side, because it was stronger that way. With our design in hand we were able to calculate the total weight of our structure, which came out to b...
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... over one-hundred pounds we did have one of the best efficiencies with our bridge holding over fourteen-hundred times its weight. Our efficiencies turned out to be one of the bests in the class.
We tackled this challenge head on. We worked efficiently with each other, which paid off because we had a great efficiency. I thoroughly enjoyed this project, it was a very nice introduction, into the other projects we will have. It gave me a nice hindsight into where my skill level might be in these types of things. I have a few suggestions on how this project could be better for future students, since this is an introduction project, I would have to say there should not have been so many constraints. Also you should try letting the students choose what types of material they want. All in all this was a very enjoyable and instructional introduction project to this class.
“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.
Bridge efficiency is important as it helps reduce cost of building while maximizing the strength of the bridge. Many things can influence the bridge’s strength and weight, but the two main things that can cause a bridge to be a failure or success is the design of the bridge and construction of its joints. In order to build a potent balsa truss bridge, it is crucial to know how the layout of members and style of gluing can help increase or decrease strength.
The Bailey Island Bridge is located in Harpswell, Maine on Route 24. Before the making of the bridge, the fishermen that lived on Bailey’s Island wanted a bridge that connected their island to Orr’s Island. The town of Harpsweell made and voted on their decisions in the weekly town meetings (“Bailey”). The project was stalled because of some of the mainlanders in the town, but it was brought back up for discussion in 1912. They first agreed on a “road” which would connect the two islands and would be constructed with timber. This was to cost $3,000. The cost quickly reached $25,000 at a later town meting because they decided to build the bridge with stone and concrete instead. Once the legislature decided to pass a bill stating that it would fun state’s highway and bridge projects, they decided to move forward with the project (Hansen, 36).
BRONX- 25 year old man is found dead after driving off the Bronx Neck Bridge with his girlfriend in the trunk of his car at around 2:00am.
The enormous responsibility that an engineer has when designing a project is often overlooked. His or her job is not only to create a design that will work under ideal conditions, but that will meet the regulations of environmental and building codes and will also survive the unpredictable forces of nature that structures are sometimes subjected to. An article in the Seattle Daily Journal of Commerce, "Structures are Held up by Both Skill and Luck,"1 describes many risks involved in the designing process and the failures that can occur when small details are overlooked. In light of a recent surge of failures in the Northwest, the article says:
I thought this video was going to be very difficult, though we have been practicing it all semester. Once my partner and I got together to do this project I became more comfortable. I went over my weaknesses and my strengths on the previous group sessions and figured out what I need to work on and what I do well at.
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 teaching project was to developed to educated adolescence about the rising obesity rates and the health issues that can arise. I needed to gather material about the subject matter that I knew they needed to be aware of. The information had to be formatted so that the teaching was understood to ensure that effective teaching took place. Then, I incorporated some learning interactive activities so that the information was retained and so that it kept their interest. One of the interactive activities was the most effective intervention that empowered the group to change their behavior. The activity involved guessing which foods belonged to the different food groups and guessing the calories they thought it contained in them. All the participants were very eager to answer the questions and when some of the questions they answered were wrong, they were interested in understanding why. I felt that effective learning was taking place.
The Tacoma Narrows Bridge is perhaps the most notorious failure in the world of engineering. It collapsed on November 7, 1940 just months after its opening on July 1, 1940. It was designed by Leon Moisseiff and at its time it was the third largest suspension bridge in the world with a center span of over half a mile long. The bridge was very narrow and sleek giving it a look of grace, but this design made it very flexible in the wind. Nicknamed the "Galloping Gertie," because of its undulating behavior, the Tacoma Narrows Bridge drew the attention of motorists seeking a cheap thrill. Drivers felt that they were driving on a roller coaster, as they would disappear from sight in the trough of the wave. On the last day of the bridge's existence it gave fair warning that its destruction was eminent. Not only did it oscillate up and down, but twisted side to side in a cork screw motion. After hours of this violent motion with wind speeds reaching forty and fifty miles per hour, the bridge collapsed. With such a catastrophic failure, many people ask why such an apparently well thought out plan could have failed so badly?(This rhetorical question clearly sets up a position of inquiry-which iniates all research.) The reason for the collapse of the Tacoma Narrows Bridge is still controversial, but three theories reveal the basis of an engineering explanation. (Jason then directly asserts what he found to be a possible answer to his question.)
The bridge we chose to select for our research paper is the Blue Water Bridge. The Blue Water Bridge spreads across the St. Clair River and conducts international traffic between Port Huron, Michigan, and Point Edward and Sarnia, Ontario. According to the Michigan Department of Transportation, “Located near the I-94 and I-69 interchange, the bridge forms a critical gateway linking Canada and the United States”. The Blue Water Bridge consists of tolls and inspection plazas on each side of the border where individuals pay for crossing and communication with inspection offices such as Immigration or Customs. The original Blue Water Bridge opened in 1938 and it was renovated in 1993. This bridge is a three-lane westbound bridge. The second
This was a multi-year project during a time in which I was taking AP classes, playing varsity volleyball and starting up and leading a new club at my high school. Because this was such a busy time in my life, I was forced to learn how to manage my time and prioritize tasks.
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
I have learned several valuable things from this project experience. First, it’s okay to not know how to do something right away. Ask, observe and experiment. Doing so will greatly enhance my ability to do it correctly and continue to learn. Second, I learned that this can be an experience in frustration if I always try to not make waves. Sometimes waves need to be made to better the project. And third, watch for similar frustrations with my students and intervene before it gets too serious.