HIST 100: Engineering The Past

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Bridges

January 17, 2016 by Kayla Pollard 3 Comments

When photographed both the Golden Gate Bridge and the Brooklyn Bridge are admired for their architecture.  While scrolling through pictures on Flickr it became apparent that the Golden Gate Bridge is admired for its color and how it appears in the bay.  On this specific website there were no photographs that were taken on the bridge itself, always from a distance.  On the other hand, there were many more photographs of the Brooklyn Bridge from a pedestrian’s point of view, the many different cables on the bridge create very interesting photographs.  From looking at the photographs of the two bridges, the Golden Gate Bridge appeared to symbolize a gateway to either the bay or the ocean on the other side.  When looking at the Brooklyn Bridge it seemed that the connection of two important cities was the main focus.

The Brooklyn Bridge, having opened in 1883, was very sturdy for its time.  Roebling had designed the bridge to be stronger than it needed to be because the science of bridge building had not been figured out yet.  I think that if the science had been better during the developing we would not have the iconic bridge, with many cables and huge towers, that we do today. In comparison to the Brooklyn Bridge, the Golden Gate Bridge is just as breathe taking but much sleeker.  The opening for the Golden Gate was just over 50 years later, and engineers began to have a greater understanding of bridges.  It was designed to be more flexible, to withstand the wind it would encounter.  Had the bridge been built at the same time as the Brooklyn Bridge it is possible that the design would have been bulkier and not as iconic.

Both bridges have had minimal changes through the years, none of them effecting the overall appearance.  By both New York City and San Francisco deciding to keep their historical images they are appreciating their city’s past, and our country’s past.  Even being on opposite sides of the country both cities are places of innovation and change, but they know it is important to celebrate history and to be proud of what came first.

Filed Under: 01.2 Bridges, Group 1

01.2 Bridges

January 17, 2016 by Jessica F. 2 Comments

  1. Reading through the information on both bridges it seems as if they are both suspension (cable) bridges. Both designed to withstand wind, and allow movement. The Brooklyn Bridge is classified as Neo-Gothic style and has beautiful archways. It looks very old and classic. The Golden Gate Bridge looks more modern and has become iconic due to its orange paint color. I found very interesting that one of the reasons they painted it this color was for it to be more visible when fog is present. It seems that would be an obvious reason, but I didn’t even think about that until it was mentioned. Both bridges are exposed to harsh weather, but the weather can vary due to the different locations; New York and San Francisco. New York has four seasons and experiences snow, heat, wind and rain. San Francisco doesn’t usually encounter snow but has dense fog, high winds and rain. Both cities are coastal and can experience hurricanes and earthquakes. Both bridges are depicted iconically in photos that I saw online. I have never seen either of these bridges in person, but looking at photos they seem enormous. I would be intimidated to drive across either of them! It is also common to see these bridges in movies and t.v. shows because they are so well known and respected.
  2. The Brooklyn Bridge was built in 1883 and took years to complete because they obviously did not have the technology and equipment we have today. After looking at early photos of this bridge being built, I couldn’t help but think how dangerous it must have been to have been involved in the construction (cables, painting) as a worker. One thing I found fascinating about this project is the engineer (designer) John Roebling sustained a foot injury and decompression sickness during the early stages of the project and had to supervise from an apartment overlooking the bridge. But even more interesting is that he had his wife help by running information back and forth from the job site and she eventually helped their son oversee the construction. I wonder what that was like for her? As a women in the late 1800’s was she respected? The Golden Gate bridge was built in 1937 by Joseph Strauss (and many other engineers). This was much later in time compared to the Brooklyn Bridge, so I wonder if there was better technology available to them? Before construction began it seemed as if there was a lot of opposition from government and the Navy to build it. One piece of information that stood out to me is that during the build of the Golden Gate bridge, Joseph Strauss innovated safety nets to catch workers if there was an accidental fall. It seems this would have been a safer work environment than that of the Brooklyn Bridge.
  3. Both bridges are still standing today because of the quality of construction and ingenuity of the engineers and designers of both projects. Both cities are very proud of these accomplishments and have worked hard to keep the bridges open and safe to drive on.

Filed Under: 01.2 Bridges, Group 1

Kyle Mitsunaga Bridges

January 15, 2016 by kylemitsunaga 5 Comments

When it comes to these two very historical bridges you may think they are so very similar. Although I have been on both bridges, there is a key difference that you may not know if you haven’t done any research about them. Looking at both bridges you think of historical landscapes that tourist may come and see if they are in the area. They are both larger in person than you’d expect it to be. But to get down into it one may say they would rather travel on the Brooklyn Bridge over the Golden Gate because there is no toll fee to travel on it. Aside from the toll fee on the Golden Gate there are many other differences. After a little bit of researching the Golden Gate is made of pure metal, whereas the Brooklyn Bridge is made of iron and steel, both bridges are suspension bridges as well. The Brooklyn Bridge has cables suspended all going towards the middle of the bridge looking like a spider web. The Golden Gate has cables going straight up and down. It seems as if people frame these bridges in photos as “breathtaking”. Most pictures that you see online all have a nice sunset, or has the city and large buildings behind it. The pictures are very catching to the eye and make it seem very real.

 

As we know the Brooklyn Bridge is older. I you look at the bridge it looks like there is a bigger base in the middle of the bridge. Again like I said with the cables all are connected to the middle it seems. Now the Golden Gate looks thinner, not as big of base. One may say that building the Brooklyn Bridge was a new project for the contract workers that they have never worked with. Maybe the Brooklyn Bridge has a bigger base because of the lack of knowledge of how sturdy it would be. The Golden Gate seems like it has less of a base, though it is new than the Brooklyn would they have that knowledge? Could the base just add to the esthetics?

 

Another hypothesis I have about the different makeup of the bridges is due to the likelihood of earthquakes. As we know California has a history with some large earthquakes, New York on the other hand has had some but not on the same scale as California. Now does the construction differ because the Golden Gate is more prone to an earthquake?

 

Lastly, the fact that both cities haven’t made any major changes to the bridges say that they are proud of their cities history. Both cities believe that they have the most famous most beautiful bridge in the United States. With high traffic volumes on both bridges you can say it has revolutionized both cities. They are both historical cities with monumental landmarks which both happen to be bridges.

 

Filed Under: 01.2 Bridges, Group 1, Student Contributions

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