How Technology Has Changed The World Today

Bridges have been used for thousands of years, beginning with natural formations, such as huge rock arches (Appendix A). The first bridges made by humans were most likely simple spans of wooden tree trunks laid across streams, or planks, such as rafts tied together (Gascoigne, 2001). These simple designs evolved over time, as new materials became available, to form the hundreds of bridges we use today. Some basic bridge designs include truss, arch, beam and suspension bridges. The most basic of these is the beam bridge (Appendix B1), which consists of a deck, spanning a relatively short distance, that is held up by a pair of abutments (vertical supports at either end). When weight is placed on

Initially, suspension bridges before 1940 were made of piers, towers, wires, anchorages, and roadways. Piers were the main foundation for the suspension bridges. There usually were two of them, which were made out of cement and were entrenched in ground underneath the body of water that the bridge was spanned across. Towers were built on top of the piers to provide a means of connection for the roadways and wires. Wires were connected to the towers, roadways, and anchorages to provide tension support for the weight of the bridge. The anchorages were large cement platforms that were planted into the ground on either side of the land so that the wires could be connected to it. Lastly, the roadways were the main point of the suspension bridge. They usually were wide enough to provide four lanes of traffic and stretched from one side of the bridge to the other. This was the basic design of the suspension bridges

There are many differences between our bridge and other bridges. One being location. Another one being that thing that was sacrificed for it. Another one being cost. Also another difference would be weight and capacity, and the size or length.

Bridges are a vital part of people’s everyday life and without them people would not be able to do nearly as much as is possible today. The weather in the outer banks of North Carolina is very rough and can be very detrimental to the various structures on them. When hurricanes come near North Carolina the outer banks are hit the worst. Bridges on the outer banks keep being destroyed by weather and so the people there have to think about the cost, the effectiveness, and the need between a strong expensive bridge that will be able to handle rough weather or a cheap quick to build bridges that may fall with any extreme weather.

Each group will be introduced to a bridge study unit. Teachers will cover academic material of different bridge structures in relation to U.S. common core standard requirements for social studies, science, and math. Students in Group B will be asked to select a bridge discussed in the unit. Then, they are asked to draw a blueprint for a bridge of their own inspired by the bridge they selected. Once their blueprint is complete, at a later date they are asked to construct a bridge from their blueprint with various materials that the teacher will supply. During each part of this assignment students are reminded to use/include the math and science concepts that were taught in the bridge unit. Bridge blueprints and constructions done by Group B will be presented to the class for evaluation and a benchmark test will also be dispensed to all students in Group A and Group B to collect data for

Since the early days, the men try overcome environmental challenges and, in this process, ends up creating amazing masterpieces of engineering. Among this works, the bridges appears as the clearest representatives of how the mankind could adapt to Earth’s contours. If the shape of landscape can’t be changed, the bridges are the solution to link two places and allows the connection of the traffic to improve aspects such as the communication and the trade. Depending to the need, to the sources and to the environment, the bridge can be constructed in a specific configuration. There are five main sorts of bridges configurations. First, there is the simplest bridge, the beam bridge. Second, the arch bridge, one of the oldest kind. There are the truss, composed of set of trellises. Lastly, there are the cable-stayed and

The history bridges have surrounding them spans a long period of history. Romans were the first civilization to construct long lasting bridges with their aqueducts. They made arch bridges which play a hand in many of the designs of modern bridges. Nowadays bridges use trusses to strengthen them. There are many types of bridges and trusses. The first

Hecox (2011) says that the arch structure of the Tillman Bridge makes the canyon walls hold the weight of both vehicles and the bridge itself. In addition, the arch structure allows a better vision of the canyon for the drivers, which was a request of the population to the engineers of the project. In the other hand, according to Jones (2015), the truss structure of the new St. Anthony Bridge also was requested by the population because they wanted to keep a truss bridge in that place. The author also affirms that the St. Anthony Bridge is a truss, but the project team proposed adding a posttensioned concrete bottom chord to the steel truss in order to reinforce it. The project team made this choice because one bridge in Minnesota has collapsed in 2007, and the engineers wanted to lessen the fracture-critical issues to avoid a new catastrophe. In addition, this posttensioning approach wiil make the structure redundant for both resiliency and long-term durability. In conclusion, both bridge's structures were right chosen in order to provide safety and beauty in both

We choose design #1 because the truss bridge is a bridge whose load bearing superstructure is composed of a truss, a structure of connected elements forming triangular units. The stressed from tension, and compression helps carry heavier masses. We chose the truss bridge, for it is a very rigid structure and it transfers the load from a single point to a much wider area. A truss is an arrangement of structural members that are connected together to form a rigid frame work. Modern trusses are made of structural steel. All bridges have 4 main characteristics: form, span, material, and travel surface in relation to the structure. A truss bridge is one form that a bridge can take and there are at least 30 different kinds of truss

The Principle upon which all trusses rely is that the triangle is the strongest and most rigid geometric Figure. By arranging the framework of triangles in patterns that varied from designer to designer, the structure acquired different appearances and served different purposes depending on the needs of bridge builders. The pony truss, the smallest type and ordinarily confined to lengths under 140 feet, with most under 100 feet, is distinguished by its low profile and absence of bracing above the roadway. The through truss by comparison is greater in length and height and consists of a tunnel-like structure that carries traffic through a system of overhead bracing which ties together the upper chords of the bridge.

Bridges are structures that are quite fascinating to me. They are very useful in the real world, in terms of carrying weight across a previously uncrossable path. I decided I would investigate how to design structures that carry weight without collapse. I have thought of designing some structure that would stretch as far as 100 meters or so. I believe this to be theoretically possible and maybe someday applied in the real world. When designing such structure one must account for all the math one will encounter. This investigation will involve various concepts of math including geometry, trigonometry, and physics.

Have u ever been on a bridge before. Well I haven't but I'll am going to talk about four different famous bridges and they are all suspension bridges. They are a lot of suspension bridges out in the world and that you can't study all of them at once. Also you can go on the bridges if you wanted to but if you wanted to you should go on one of these bridges I'll be talking about. Also all the bridges are one of the most outstanding bridges then the rest and they stand out then all of the other shiny gold and metal build sides and and the sparkling lights. The bridges I will be talking about is the Golden Gate Bridge, and the second one is the Brooklyn Bridge, the George Washington Bridge, and the last one is the Verrazano Narrows Bridge.

Errrrr spack as the construction workers fall to their death. 11 people died while on the golden bridge working on the bridge. After all those deaths they later installed a net and many people were saved.There are many types of bridges like suspension,beam, truss and arch.So in this nonfiction essay you will know all about suspension,beam, truss and arch bridges. There are many types of bridges that are used for different things. This essay is about different bridges. A suspension bridge is usually a big bridge that stretches a long ways.The first model of a suspension bridge was built in the 1800s in and is used today. Suspension bridges have long cables that hold the bridge without piers. A suspension bridge is a very expensive Bridge because of the materials that it uses. A suspension

After completing this simulation, our bridge only had one string (cable line) untied from the wire (hanger). Nothing else was damaged therefore, everything was intact. During this test, our bridge was exposed to torsion because it was twisting and being thrown around in the simulator. Our modifications helped my bridge withstand the earthquake and hold a numerous amount of weight. Our bridge was very strong and one of the top performers in the class although, it could have had more trusses and modifications to make it even stronger. Our bridge weighed ⅞ lb. and it held 250 lb. therefore, it held 286 lb. for every 1 lb. As said before, we could have added more joints and trusses to improve our bridge’s performance. Compared to the rest of the White Group, our bridge was the second strongest bridge. Our bridge also performed very similar to everyone else's in the earthquake simulator. The heaviest bridge was the Brooklyn Bridge, which also happened to be the strongest. The tallest bridge was the Ben Franklin Bridge, coming in at 13 inches. In the future, I think walking bridges could be made from glass, able to be looking down on a river below you. Yes, I think a computer can help fix faults and help for better design and performance of bridges. I learned many things from this bridge project, some being, how to work as a team, patience, how bridges work, and different things that help architects

Foreword: I composed this brief and informal overview of truss bridges and Balls Bridge to put this beautiful historic bridge 's history and significance into context. A version of this document with full-color photos is available on my website 's Balls Bridge Page located at www.historicbridges.org/ontario/balls/index.htm which also has more information and photos. The general truss bridge information in this document was adapted from a formal research paper I composed. This paper, which cites the many different sources I used to produce the history of truss bridges, is available at www.historicbridges.org/info/intro/trusshistory_c.pdf in PDF format. The metal