...|Spaghetti Bridge | Abstract For this assignment our task was to build as a group a spaghetti bridge with the objective of carrying the most weight as possible using only spaghetti and hot glue, meeting the specifications. The bridges will be loaded until they fall. After testing to destruction, the bridges loading capacity was 14.4kg, with an initial mas of 0.840kg. This gave a weight to strength ratio of 17.1 putting the group at 4th/8th position in class. From this it was learned the bridge held 14.4kg which is 140N therefore one Truss held 70N. These calculations helped us understand how our bridge coped with the forces and helped us answer the question of what caused our bridge to fail and where our bridge failed? Contents Abstract ii Introduction 1 Background 2 Analysis 3 Design 5 Methodology 5 Calculations 6 Newton’s laws: 6 Forces on the bridge 6 Stability: 6 Truss analysis 6 Structural stability of Final Bridge: 7 Testing: 7 Simulation: 7 Results: 8 Bridge failure analysis: 8 Spaghetti beams: 8 Conclusion 9 Limitations 10 Recommendations 11 List of References 12 Appendix 14 Spaghetti Bridge Activity Report 14 Group productivity and progress 18 Further Calculations 19 Introduction For this assignment the aim is to research and construct a spaghetti bridge in a group consisting of six members with the objective...
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...Charlie Boorman Date: 12th November 2015 Subject: Blacklands Farm Overview of the task Firstly, we decided on doing a Bridge building task. The aim of this task was to build a bridge out of the resources provided. Our bridge had to be strong enough so it could to manage to hold a glue stick and other objects the bridge could hold. We first decided to a draw a plan for the bridge on a piece of paper. We then decided to distribute roles based on the skills certain individuals had. Freddie was the leader of the team; he started by rolling the paper to make pillars to support the bridge. At first we struggled to work as a team so he was the one that got the team focused and on track. Jack then started by building the main part of the bridge, which the glue would balance on. I then started cutting off strips of sellotape which we would use to connect the pillars to the main structure of the bridge. On Wednesday 11th November I attended a trip to Blacklands Farm where we had to work in teams to achieve a certain goal. Before we started the team building activity we had to select a leader, so as a group we decided that Alex would fit the role perfectly. We had to deal with situations in which Communication and teamwork was very important. For example, in the team building task we had were given slabs of wood which had to lay down a path to get from one side to another, but if our we took our foot off one of the slabs then they were taken away and if someone fell off then we had...
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...Why was the bridge built? The Sydney Harbour Bridge (also known as ‘The Coat hanger’) was built to connect the City of Sydney (at Dawes Point) to The North Shore (at Milsons Point). It was built to resolve the continuing and growing transport problems of the Sydney Harbour. Everyday dozens of ferries carried people to and from the North and South Shore. There was only one other way to get to the other side of the shore other than taking a ferry and it was by road but it took 20 kilometers and a series of small bridges to get their, this way was usually used to transport food and other goods. The bridge would carry rail, vehicular and pedestrian traffic. For decades people were talking about building something to cross the harbour to put an end to the long commute. In 1922 the New South Wales Government seriously consider a way to connect the two shores together. 20 designs were submitted to the government of a bridge but the winning design was by Dorman, Long and Company. How was the Bridge built? Before the bridge started construction 800 houses were demolished before to make way for the bridge. In 1925 construction on the bridge started, both ends started at the same time and in five years time the ends would meet in the middle. The Sydney Harbour Bridge is made from steel, therefore the engineers had to come up with a way that would allow the bridge to expand and contract and rise and fall 18cm either way. The engineers ended up solving this problem by installing...
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...Analyse * Suspension bridge – they are likely to be used to span a wide expanse of water I find it appropriate for it to be built in this scenario because it is not possible to build a beam bridge * Cable stayed bridge- this is a versatile bridge because it can be suitable for short and long spans 1. The community of drakensburg has been struggling with a problem of primary kids and residencies having trouble to cross to the other side of the river to go to school therefore the municipality has issued a tender for companies to pitch. Research The department of transport has dumped large quantity of stones that can be used for the concrete. The stones will help to make the bridge stronger and it will therefore cost the company less money as it will not be required to buy stones Experiement What ive experiemented is that the river has a large quantity of water hich means that we will have three options to choose from in terms of bridges as ive already mentioned them above Modelling Research Designe brief I am going to design a bridge that can accommodate a large number of people meaning that it is going to be strong but it will cost less therefore it will save us money but Is going to be strong. As ive said before that the department of transport dropped a huge quantity of stones in the river the stones will help us when we doing the concrete that is why the bridge is going to cost less because the stones are not man made the are natural mountains stones...
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...be displayed on any digital projection device like a white board or a projector where the teacher describes the settings and the rules. The story of the game is about a boy who lives in house next to a lake and wants to go play in the playground on the other side of the lake. He needs to form a bridge using blocks to pass the lake. The first screen starts with a display of a house on one side and playground on the other side where there is a lake in the middle and a boy standing next to the house. On the top of the screen, a beginning of a story will be displayed as “The boy wants to go play in...
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...Senior Design Project Submittal May 4 2012 Bleser Park Pedestrian Bridge The following is a 2011-2012 Senior Design Project report for the Fenn College of Engineering at Cleveland State University. Senior Design Project Submittal 2012 Table of Contents 1.0.0 Introduction........................................................................................................................................ 5 1.1.0 1.2.0 2.0.0 2.1.0 2.2.0 2.3.0 2.4.0 Objective .................................................................................................................................. 5 Group Members ...................................................................................................................... 5 Project Description ..................................................................................................................... 6 Assignment .............................................................................................................................. 6 Existing Bridge ........................................................................................................................ 7 Proposed Bridge ..................................................................................................................... 8 Owner Requirements ............................................................................................................. 9 2.4.1 Safety .....................................................
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...Engineering Disaster: Tacoma Washington Bridge Disaster The Tacoma Washington Bridge was built in Washington state during the 1930’s. The bridge was made available to traffic on July 1, 1990. The bridge spanned the Puget Sound from Gig Harbor to Tacoma, which is 40 miles south of Seattle. The main font of the bridge on the Tacoma, Washington side was 28,000 feet long, 39 feet wide and the steel stiffening girders were 8 feet tall. There were four months of active life on the bridge before the failure. Many transverse modes of vibration were observed prior to November 7, 1940. The crucial event occurred at 10:00am. This directly led to the catastrophic torsional vibration which apparently caused a loosening in its collar of the north cable by which the...
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...10/24/14 Tacoma Narrow Bridge Executive Summary The Tacoma Narrows Bridge was built in 1940 at the cost of $6.4 million funded mostly by the federal government’s Public Works Administration. The purpose of the brigde was to connect Seattle and Tacoma with the Puget Sound Navy at Bremerton, Washington. It was said to be the third largest of its kind. Though it was a long bridge, it was very narrow because it only had one way traffic from each direction. It had a center span of 2800 feet and a 1000 foot approaches on each side. The bridge took nineteen months to be constructed and fell apart barely four months after its inauguration. It is however important to note that even before the inauguration, the bridge had started showing signs of incompetence and exhibiting strange characteristics which shouldn’t have gone unnoticed. The bridge started galloping and swaying and hence got the nick name, the “Galloping Gertile”. In order to under the dynamics of suspension bridges, we need to understand the physics of bridges as propagated by Newton also known as Newton’s Laws. All bridges are subject to Newton's three laws of motion. Newton's First Law states that an object at rest will stay at rest unless acted upon by an Unequal force. For a bridge, this means that unless all of the forces on a bridge remain balanced, one or more components of the bridge will move. Left uncorrected, this instability can lead to a partial or total collapse of the bridge. Newton's Second Law...
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...Department of EEE Ilahia College of Engineering and Technology Muvattupuzha, India reshmasnairch@gmail.com Ansar Jamal Assisstant Professor, Department of EEE Ilahia College of Engineering and Technology Muvattupuzha, India Abstract— DC/DC converters are having important applications in many offline power supplies. They are widely used in different types of electronic devices such as battery charger, electric vehicles, and in portable devices like cellular phones, laptops, computers etc. In battery charging applications of hybrid plug in electric vehicles full bridge dc-dc converters are commonly used. The fundamental problem regarding the conventional full bridge DC/DC converter topology is the voltage spikes across output diodes due to...
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...Wharton1 David Wharton Dr. Northcutt ENG 1020-04 April 10, 2012 “What a Beautiful Bridge” In the writing of A Farewell to Arms, Ernest Hemingway employs symbolism in many forms. Hemingway uses water in various states throughout the progression of the novel such as the use of rain and rivers to symbolize life and love as well as death and danger. Hemingway uses symbols to allude to the events that will occur in the coming chapters of the novel if the reader is keen to heed them. Hemingway’s use of the “bridge” and the rivers they cross, represent the lives of people and the hazards people encounter when they approach and cross a bridge in an effort to reach what is waiting on the other side. The novel opens with a beautiful description of life and of living our lives. “In the late summer of that year we lived in a house in a village that looked across the river and the plain to the mountains. In the bed of the river there were pebbles and boulders, dry and white in the sun, and the water was clear and swiftly moving and blue in the channels”(3). Life’s river bottom is littered with small problems and with large problems. When things are going well, our lives are blue skies and sunshine and we are eager to have life pass rapidly. Hemingway is making a stand on the political atmosphere that was prevalent in America in the late 1920’s and one which can be applied in contemporary America as well. I must Wharton2 disagree with Thomas P. McDonnell, who wrote in an article for the...
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...of the keys to help him with his frustrations. In the ‘’The Unexpected Lessons of Mexican Food,’’ Montano uses food to make a bridge between Mexican and American culture. First, Montano uses food to make a bridge between Mexican and American culture when in the article he refers to himself as a ''Wexican'' (936). ''Wexican'' is a union between the words White and Mexican. According to the article, ''In the Mexican side of my family I was known as the white one’’ (936), and ''On the other side, my cousins called me a ‘Wexican,’ a white Mexican despite my similarly toned skin'' (936). He was not recognized for either even though he spoke Spanish and strongly identified with his Mexican heritage. Right after writing about his biracial identity, he makes the bridge when he tries to eliminate his frustrations by using Mexican and American products to cook, and he feels more comfortable because ''I could make a food that doesn’t have to be Mexican or American'' (936). In his introduction, Montano refers to ‘’the earthy smell of boiling pinto beans’’ as something that apparently both sides of his family liked (936). Later in life, his experience in Argentina with cooking Mexican food for his friends helped him realize and gain confidence in his identity as a Mexican- American (940). Second, talking about Eagle Pass, Texas, Montano uses food to make a bridge between Mexican and American culture. It is the hometown of his dad. Eagle Pass is an American town by the Rio Grande River with...
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... Theme: nature Rhythm There are bridges on the rivers, (hyperbole) As pretty as you please; But the bow that bridges heaven, (metaphor) (imagery) (symbol) And overtops the trees, And builds a road from earth to sky, (metaphor) Is prettier far than these. The tone of this poem is dreamy because the author is making a picture inside her head that a rainbow is looking more pretty. on one side than the other side that has bridges and boats, ships, clouds that are moving. The theme of the poem is nature because it talks about trees, clouds, and water. Poetic Summary: This poem is about boats, ships, clouds, and bridges. It says that clouds that sail across the sky are prettier than boats and ships sailing on the rivers and seas. Also the poem talks about bridges on the rivers and the bow that bridges heaven, but the bow that bridges heaven is far and prettier. Poem Rewrite as Paragraph: Boats sailed on the rivers and ships sailed on a sea but clouds that traveled across the sky looked more pretty. There are bridges on the rivers that pleased me that it was extremely pretty. The rainbow that crossed heaven, rise above the trees and created a pathway from the earth to the sky was way more pretty. Own Poem...
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...subsequent years. We see examples of the movement in many of Philadelphia’s architecture and civic projects. The University Avenue Bridge is one of those projects. As early as 1918, the City of Philadelphia began planning a new bridge to cross the Schuylkill River, running along South University Avenue and merging onto South 34th Street in Grays Ferry. As a joint project between architect Paul Philippe Cret and engineer...
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...are two possible solutions for that; they are usage of a third Bridge that connect two continents and usage of Ferries. Our assumptions for alternative solutions are to develop car transportation via ferries or a third bridge. In order to make comparison of all three projects more easy we take the capacity for all projects as 120,000 vehicles per day, because the capacity of the tunnel and the third bridge are similar. Two alternative solutions As it known in Istanbul there is a big concern about traffic and its possible solutions. The main difficulty for people that live in Istanbul is to get from Asian side to European side by their own car and as example to get from Kadikoy to Zeytinburnu by normal way through the bridge can take approximately 100 minutes. The Eurasia Tunnel project is a new solution for this problem that will take 15 minutes to pass from one side to another. But also there are two more possible solutions like usage of Ferries and usage of a Third Bridge. Pic. 1 (A- Zeytinburnu, B-Kadikoy 1-Ferry for cars) On the Picture 1 there is shown the way that vehicles have to pass in order to get from point A to point B. And it is obvious that the way is not short that is also including traffics on the bridges. So the alternative solution can be a usage of ferry. There are two types of ferries in Istanbul one of them that can take only passengers as a bus, so it called Ferry Bus; and the other one can take passengers with their own car. But nowadays there...
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...‘Is Ellie wrong to have killed the soldiers? In the novel, ‘Tomorrow When the War Began’, by John Marsden, throughout the ending, including chapters 7/8, 11 and the last chapter killings of the soldiers occur. It focuses on the question, ‘Is Ellie wrong to have killed the soldiers?’ In some instances Ellie is right to kill the soldiers, for example; Ellie was right to have killed the soldiers as it was in self-defence; it was either they kill her or she kills them. To protect her friends from the worse she made a hard and terrible discussion to take another person’s life. In other instances Ellie is wrong to kill the soldiers, for example; Ellie could have just wounded them and give them a chance to retreat instead of killing them. In chapters 7 and 8, more than one act of killing occurs, the first is the dead of most of the pet and farm animals which is unusual as most animals could have been used as source of food and a companion and the second is different, Ellie is forced to kill the soldiers as they become a fret to her and her friends. Wirrawee is their home where they should be able to feel safe and welcome but instead felt fear and terror. In hell they had the comfit of safety by the shelter which protected them from the war outside although it was enclosed. The group of friends return home from their trip to find no one home and Ellie’s puppies have died of thirst and hunger and the mother is in a weak condition also the cow was found unmilked which can result in...
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