The first modern civilization to use bridges was Mesopotamia. In the modern era bridges are everywhere, even in physics class rooms. My classmates and I were assigned to design and build a bridge using only balsawood and elmers glue that was dyed green. This project was assigned to us after the AP Physics exam, and was completed during class time, and was worth the class time.
We had roughly two and a half weeks to design and build our bridges. The first day the project was assigned we were given class time to research different bridges and develop a design. This time was essential in the design process. My partner and I were able to narrow down a bridge concept and begin drawing our design by the end of the first day of research, and by the second day we had a design. After finalizing the design it only took my partner and I four days ( 2 long classee and 2 short classes) to build the entire bridge. Therefore, the two and a half weeks of class time was plenty for my partner and I to design and build a bridge. If we had an infinite amount of resources my partner and I could have tested our bridge and built another bridge before the due date of the project. Which brings me to my only suggestion of allowing the teams to prototype and test their bridges if they are able to within the time frame of the project. This would of allowed my teammate and I
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My partener and I split up the duty of building the bridge, (my partner built one half and I built the other) which resulted in slight variations of human error, which made the bridge slightly off centered. The fact the bridge was slightly off centered is why I think only one side exploded while the other was still intact. There would be more pressure on the lopsided side versus the upright side. I believe if my partner and I were able to build the bridge perfectly symmetrical it would have held more
Have you ever thought about driving over a suspension bridge held up by cables? That’s what the Mackinac Bridge is. With the building of the Mackinac Bridge there has been many positive effects that have come out of it.
Without a concrete reason for the bridge's failure, every suggested reason was researched until proven incorrect” (Silver). There were many reasons that were suggested, but could not be proven correct due to the collapse. Wikipedia states that “A small crack was formed through fretting wear at the bearing, and grew through internal corrosion, a problem known as stress corrosion cracking.” The failure of the bridge was caused by a defect in one of the eye-bars on the north side causing the other side to collapse as well. “Stress corrosion cracking is the formation of brittle cracks in a normally sound material through the simultaneous action of a tensile stress and a corrosive environment.
Construction of The Peace Bridge in Buffalo New York What can construction do for an area? The construction of an office building may bring in a firm, corporation, or company. The construction of a sporting arena may keep a team where it currently is, or bring a new team to that area. For example, the construction of the HSBC Arena kept the Sabres in Buffalo. The construction of a casino may bring in tourists, or people who live in the outlying suburbs.
The Bailey Island Bridge is located in Harpswell, Maine on Route 24. Before the making of the bridge, the fishermen that lived on Bailey’s Island wanted a bridge that connected their island to Orr’s Island. The town of Harpsweell made and voted on their decisions in the weekly town meetings (“Bailey”). The project was stalled because of some of the mainlanders in the town, but it was brought back up for discussion in 1912. They first agreed on a “road” which would connect the two islands and would be constructed with timber. This was to cost $3,000. The cost quickly reached $25,000 at a later town meting because they decided to build the bridge with stone and concrete instead. Once the legislature decided to pass a bill stating that it would fun state’s highway and bridge projects, they decided to move forward with the project (Hansen, 36).
The Golden Gate bridge, standing as an icon of roadway innovations, took multiple engineers years to design and complete. They could not just simply build an ordinary bridge. They had to take into consideration the physics behind it, as well as, what kind of effect the environment would have upon the bridge. The bridge sits along one of the most active fault lines in the world, so engineers had to make sure their bridge could withstand a little movement. Today the Golden Gate bridge still stands tried and true, as does many other innovations that 20th century engineers came up with.
Bering Land Bridge- during it’s time of existence the bridge was a major factor in migration from Asia to North America; made travel easier because it was on land instead of having to travel by boat
BRONX- 25 year old man is found dead after driving off the Bronx Neck Bridge with his girlfriend in the trunk of his car at around 2:00am.
Golden Gate Bridge held the title as one of the longest bridges for a reason. It has a total length of 2,737 meters with a width of 27 meters. It also has a clearance of 67 meters for ships to pass by. Besides its incredible dimension, its architecture also plays a tremendous role for its beauty. The bridge employs art deco style, a chevron or beveled shape, used to add visual effect. The concrete structures at the ends of the bridge have chevron form as well as the concrete at the base of the towers. There are two shafts in each tower, 90 feet apart decreasing in width as they go up. The two shafts are connected by cross bracing and having four horizontal struts above. The bridge’s art deco design and towers were designed by architect Irving F. Morrow.
The Iron Bridge first constructed in 1779 and completed in 1781 was built for many reasons.
In the book The Bridge of San Luis Rey, Brother Juniper witnesses the collapse of the San Luis Rey Bridge and the deaths of the five people who were on the bridge when it fell. This disturbs Brother Juniper greatly. He wonders if God intended this, or if it was merely a coincidence. In order to find out if it is coincidence or not, he gains as much information as possible on the five people who fell to their deaths on the bridge. He feels that if he can make a connection between all these people then he can figure out why God made this happen to them out of everyone in the world.
When designing large structures such as bridges, ships, dams and various modes of transportation, engineers must determine what methods and materials should be used in order to design, construct, and maintain the structure for a long period of time. A strict code of ethics must be followed in order to reduce any possible damages and tragedies. Though this process is used to try and minimize any design errors and possible failures, unknown factors such as population increase, natural disasters, and insufficient manpower can cause the structure to fail. Such is the case for the I-35W Mississippi River Bridge and the Mianus River Bridge.
This all iron design made the bridge a lot heavier than it was designed for, which added more stress to the truss. This fact, by itself, wouldn’t cause any alarm. However, the bridge itself, was very poorly constructed. The members of the bridge were all different sizes, and they were not connected together properly. Due to the poor construction and eleven years of use, members of the bridge had started to bend due to the stress. Despite bridge engineers inspecting the bridge for eleven years, no one noticed these faults with the bridge. However, the ultimate cause of this collapse, was so tiny, only one of the investigators, after the collapse, noticed it. A tiny air hole was left during the construction of the bridge, “and grew with repeated stress over eleven years” (Escher, 2009). This hole would develop in a crack, due to the changing temperatures and the trains crossing it for over eleven years. This would weaken the overall strength of the bridge. The cold winter air and the weight of the train would ultimately prove to be too much, and the whole bridge came crashing
It is important for people to know that you don’t need to wait for something bad to happen to fix something. This is a rule that applies to more things than just the bridge. For example, the saying “ if ain’t broke don’t fix it” sounds like a good saying but it's not. New studies and research prove that old things that are not broken can be outdated. Cars are a great example.
Completed in 1850 Brittania Bridge was the brainchild of Robert Stephenson and at the time was at the cutting edge of civil engineering, with all aspects of construction being on an unprecedented scale. Construction began in 1846 and was completed by 1850, it was intended that the bridge carry the Chester and Holyhead railway across the Menai Strait. Brittania Bridge had to be a tubular bridge to meet the criteria set by the board of admiralty, that the span of the bridge should be at least 100ft above the Menai Straits at all points. This was the first of many issues met and overcome during the conception and construction of the bridge.
Haghani et al. (2012:456), state that bridges are vital parts of the infrastructure in the modern society and some railway and highway bridges were built in the first half of the 19th century and their technical life span is deemed to be already completed. TFR’s SAC BU constructed its rail bridges in the 19th century, despite the fact that the maintenance teams are maintaining them according to schedule and procedure. The railway bridges that are currently in use by SAC’s BU are currently being subjected to rigorous demands due to an increased number of trains that the BU is running. Life cycle management, which is vital in infrastructure and technical support managers must ensure that they adhere to life cycle management to improve the performance of the railway