11th Street Bridges

Washington DC: 11th Street [The Need] Bridges are no different than any other form of infrastructure, eventually they break down and need to be either repaired or replaced. Inspection occurs at least every two years, yet bridges are often pushed to their absolute limits of usability. In Washington DC, the 11th Street Bridge Project aims to replace two bridges built in the 1960s with three new bridges. With these bridges having been in place for nearly 50 years, there were numerous issues. For one, the carrying capacity of the two bridges was not great enough to meet the needs of the area. That was pertinent as with the rise in technology and suburban flight, people were increasingly traveling into the city in the morning to work and out at night to go home. Secondly, the bridges were deteriorating and had reached their maximum life capacity. Without action, the city was facing not only greater travel times, but a…

graduated from college that you have wasted four years of hard, stressful and even worse, expensive work. Unfortunately, in this cynical society today, the world isn’t just full of competitors, but it’s full of greedy money-grabbing businesses. The worst businesses aren’t manufacturing or electric companies, but colleges and universities. In Caroline Bird’s essay “College is a Waste of Time and Money,” she examines how college has been viewed for so long as the best place to send high school…

First, it contributes to a greater sense of realism in the viewer. Sound originating from a source within the world of the scene does not indicate does as certainly as music from a non-diegetic source. Secondly, it can indicate information to the viewer. As the source of the music comes from within the universe of the characters, the music’s presence can be related to things within that universe, very relevantly to the characters themselves. In the same way that knowledge of someone’s musical…

equipment and bases. They needed to train up all different engineer jobs and get the equipment from all the engineer reserve unit. With all the different MOS’s there were two engineer jobs that were an asset Bridge and Land Clearance Engineers. There were many different missions for both types of engineers. There were miles and miles of new and old bridges that need to be constructed or repaired. Land Clearance teams had thousands of acres of dense jungles that needed to be cleared. With all the…

TASK 4(P4):- Discuss the effect of loading structural material 1) You need to discuss the effect of compressive force, tensile force, shear force, bending force on structural member 1) Timber: Compressive force on timber: - The effect of a compressive force on a timber is a change in structure of a material and to carry a load within its limits. Tensile force on timber: - The tensile force is the pulling force exerted on both the ends of a timber. Both the ends of a timber will undergo…

with how it was built and ending with all of the many problems there are today. Construction began on October 28, 1940 by the New York City Tunnel Authority, with a groundbreaking ceremony attended by President Franklin D. Roosevelt. It was close to finished when the Chairman Robert Moses directed the tunnel be finished with a different way of finishing the tunnel walls and the outer structure. This resulted in leaking and, according to Robert Caro the leaks were fixed but we would…

Bending Strength requirement This is the first body requirement and its task is to support all the vehicle subsystems. The body in static is going to suffer bending due to the weight of the components, passengers, fuel and cargo, Figure 42. Similar to a beam simple supported, the very first requirement is that the structure bend sufficient to absorb the energy due to the weight, but has to withstand the weight under different loading scenarios. Figure 42: Body loading under a static scenario…

On 1st August, 2007, an eight-lane, three-span section of the I-35W bridge over the Mississippi River in Minneapolis, Minnesota, suddenly collapsed. 145 people were injured, and thirteen died. This case study is based on an investigation of material evidence provided by the NASA Safety Center(NSC), National Aeronautics and Space administration (NASA), National Transportation Safety Board (NTSB), and a full-scale load rating of the bridge superstructure. Proximate (Direct) Cause: Gusset plates…

intriguing when comparing Calatrava’s swing bridges, with the Newark Bridges completed about a hundred years earlier, is how the designers of the perspective bridges approach form and function. Calatrava has a tendency to relate his swing bridges to objects, such as the sail of a boat, as mentioned earlier, or a form of the human body, providing his bridges with a natural, more organic feel. The Newark Bridges, on the other hand, were more utilitarian and mechanical, as they were design with…

Bridges are used around the world to get over a bay of water. There are several different designs that could be used when building bridges such as arc, beam , cable-stayed, truss and suspension bridges. The Golden Gate Bridge is a very well known example of a suspension bridge. It is located in San Francisco, California. Construction began in 1933, in the midst of the Great Depression, and the bridge gave steady jobs to many people during this hard time. It was finished and opened in 1937,…