The very first bridges were made by nature itself‚ as simple as a log fallen across a stream or stones in the river. The first bridges made by humans were probably spans of cut wooden logs or planks and eventually stones‚ using a simple support and crossbeam arrangement. Some early Americans used trees or bamboo poles to cross small caverns or wells to get from one place to another. A common form of lashing sticks‚ logs‚ and branches together involved the use of long reeds or other harvested fibers
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…5 Causes of failure……………………………………………….………6 Replacement bridge…………………………………….........……….10 Conclusions…………………………………………………………...10 References...........................................................................................11 Abstract (143 words) The Tacoma Narrows bridge was a one of a kind bridge at its time. Starting from its size and ending with the structure of the bridge‚ It was considered to be an outstanding bridge at that time. It looked perfect and flawless as it started
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the basic design was sound and the suspension bridge had been constructed competently. The project’s original plan and scope management may have been an appropriate one if it was for a shorter bridge. Since this bridge was so long The planners started taking unknown and unnecessary risks when they determined the width of the bridge would be single lane versus double and when they changed the girders from round to flat‚ preventing the wind to pass thru the bridge properly. When the location was chosen
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Gate Bridge in San Francisco‚ United States Opened on 27 May 1937 and was the longest suspension bridge span in the world at the time. This remained until Verrazano Narrows Bridge was built in New York in 1964‚ Golden Gate Bridge is now the seventh longest main span in the world. Construction of the 8‚981 feet or 2‚737 m bridge commenced on January 5‚ 1933. The projected cost was $35 million‚ however it was completed at $1.3 million (in 1937) below the projected cost. The Golden Gate Bridge weighs
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Basic Research 1. What is a truss and how are trusses used in bridge design? Include the importance of triangular shapes in truss design. A truss is a formation produced by triangular components. The triangular units forming the truss are slim and straight in form. The truss bridges consist of a grouping of triangles. Trusses are used in bridge design to form a series of strong supports using triangles‚ and have the forces of tension and compression acting on them. The importance of triangular
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Golden Gate Bridge Lead Designers/Engineers. The First proposal for the Golden Gate Bridge came from James Wilkins‚ who at the time was an engineering student. The cost of James Wilkins Bridge was unrealistic at the time which was 100million dollars‚ but none the less it set the bar for other bridge engineers to try to work out a cheaper solution. During this time a young Joseph Strauss had graduated from the University of Cincinnati with a degree in Business and Economics. Joseph was an avid
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that we desire. Although the concept of bridges is as simple as a tree falling across a creek‚ bridge design and construction requires very serious ingenuity. Artists‚ engineers‚ and architects pour vast resources into bridge construction so that they can reshape our daily environment for the better. When building bridges you’ll need help from BATS which are the key structural components of bridge construction such as beams‚ arches ‚ trusses‚ and suspensions. Various combinations of these four technologies
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responsible for breaking our bridge. There were compression forces on top of the bridge and tension forces under the bridge. Most of our bridge’s base was suspended in midair‚ and we could have fixed that by extending the length of the bridge. That way‚ all the rods and connectors under compression would have the table as support. Also‚ after the bridge collapsed‚ we realized that one of the connectors was loose and it broke into two. If we were to build this bridge again‚ we would check all of the
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The Golden Gate Bridge is a suspension bridge spanning the Golden Gate‚ the opening of the San Francisco bay into the Pacific Ocean. The Golden Gate Bridge was the longest suspension bridge span in the world when it was completed in 1937‚ and has become one of the most internationally recognized symbols of San Francisco‚ California‚ and of the United States‚ San Francisco’s city engineer estimated the cost at $100 million‚ impractical for the time‚ and fielded the question to bridge engineers of whether
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foot over bridge. Foot Over Bridge Introduction: Before me & my group members start our presentation I would like to share the reason of selecting this topic as our presentation topic. There are many reasons behind that but the main reason is the student of EEE department of our university who died in a road accident while crossing the road in mohakhali a few months ago. Why he was crossing the road while there is a foot over bridge
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