Duluth Places

This spectacular bridge is 8,981 feet, or 1.7 miles, long. The total weight of the bridge is about 887,000 tons. The two towers stand 726 feet above the water and 500 feet above street level. They weigh

A simple beam bridge that is flat across and supported at the two ends. A longer beam bridge can be held up along the middle by piers standing in the river. The weight of the bridge itself, plus the load that it carries, plus gravity are the downward forces are spread evenly across the length of the bridge. The upwards forces that hold the bridge up come from the piers. The Confederation Bridge in Canada is a famous beam bridge.

were very poor, but somehow, many architectural feats were being made. The U.S. Government was still building the greatest dam in the world before the Depression, the Hoover Dam, which lasted five years to build. It takes a lot of manpower and materials for the Government to build this great dam, so they hired contractors to build it and the The U.S. provides the materials. Men of six companies were hired to build the dam in 7 years or penalties will ensue; the men were called, Six Companies, Inc. Remarkably, the contractors banded together to build the dam because of the immense size of the structure, one contractor cannot do the task alone (America's Experiences). The Dams magnificent feat in becoming USA’s greatest dam inspired the same contracting firm to work on a certain bridge in the west (Hiktzik). During the time Hoover Dam was being constructed, out in the west, another architectural feat was occurring. In 1933 San Francisco, California, construction starts on what will soon to be one of America’s greatest landmarks, The Golden Gate Bridge. One of the bridges architects, Joseph B. Strauss, a man who built many bridges across the U.S., was involved in the bridge project. Strauss and his colleagues had to deal with many problems about the bridge such as people saying it had to be impossible or it was expensive and a hazard to the environment (History.com). Once the bridge was funded with thirty-five million dollars,

The first completed steel bridge was the Eads Bridge, in St. Louis Missouri. Steel was a very new material and was just starting to become commercially available. Steel was a smart choice to use because it is extremely hard and resists rusting. The Eads Bridge was the longest arch bridge in the world, of 510 feet long. St. Louis became a very important city in the midwest and had to really compete with Chicago during the Civil War. After the Civil War, St. Louis started growing in all directions. “.... the city of St. Louis wanted to reestablish its prewar dominance as the economic powerhouse of the midwest” (Ostrow 75). The main reason to build the Eads Bridge was to connect settlers from the East to the lands of the West. At the time there

Calculations were performed to determine the effectiveness of the design of the platform. Allowing for a safety factor of 1.5 times the design weight of 10kg and considering the bridge must not be overdesigned; plans were made for the bridge to fail at 25kg, 2.5 times that of the design weight. According to the calculations, the bridge would hold a load of over 15kg and experience failure at 20kg in the members. These calculations were later disproven in the testing, breaking 8kg earlier than expected, due to unforseen errors. An analysis of the bridge design and calculations has been included at the end of this report.

Both Duluth and Miami are on the water and offer opportunities for water sports/activities. Fishing, boating, jet skiing, surfing, canoeing, and kayaking are among a few of the favorites. The night life also happens to be quite large in both cities. They offer many nightclubs, bars, and restaurants. Shopping is another large quality. There are a lot of little shops down in the city.

I found it fascinating that during the building of the dome, Brunelleschi masterfully created a 65 foot crane to hoist the materials needed, up to the staggering height of 180 feet. It was the first of it's kind. He didn't draw his design for record but the famous Leonardo DA Vinci did. Those sketches were used during the industrialized revolution to build better machines. Not until the industrial revolution did another crane such as Brunelleschi's exist.

The French government had donated that bridge to help the Haitian people. As I stated before, this kind of bridge must not stay on the terrain for a long time. This time would be different due to the peculiar situation of those villages. The cities of Dondon and San Rafael used the former bridge for many purposes like to take children to school, go to the doctor appointments and day-by-day displacements. The old bridge had fallen three years ago during a tropical storm. Since that day, people used a ford path in the river to cross. They really needed that bridge.

One thing that was pretty interesting which was captured by the photographer over the course of the construction of this bridge was the complexity of it. The bridge from an aesthetic standpoint looks pretty simple, but based on blueprints and photographs developing it and installing it was very difficult. Knowing how difficult it was to construct this bridge and looking at photographs of its progress adds to how impressive the bridge looks simplistically.

This bridge is a fine example of a town’s great and enduring past being changed, for better or for worse. The Washington Avenue Bridge was built all the way back in 1934, which was exactly 82 years ago. That is probably the reason behind its remodeling, since a bridge that old may be a little unsturdy for people to drive across. Although it took way too long to fix, we can finally say that the bridge are back in

On the 15th October, 1970, during its third year of construction, the Westgate Bridge collapsed killing 35 men. The section of the bridge that collapsed was a 128 meter span that was being worked on at

It all started in 1917 when San Francisco City Engineer M.M. O’Shaughnessy took charge of the idea of building the Golden Gate Bridge. O’Shaughnessy decided to go to famous bridge builder Joseph Strauss with the proposed idea, and the project began. Being the City Engineer, O’Shaughnessy thought that he would fit best to be the Chief Engineer of the project. But O’Shaughnessy later lost the center of attention that would then be given to Strauss awarding him with the position of Chief Engineer. After all of this Strauss began creating what is now one of the most significant structures ever built in the United States. The beginning estimated costs for the construction of the bridge was from $25 to $30 million with an estimated span of about

The basic design of the Tacoma Narrows Bridge itself was a suspension bridge with a center span of 2800 feet and two side spans of one 1100 feet (Farquharson, 1950, p. 17). Its two lane, reinforced concrete roadway was twenty-six feet wide with two 5 foot, 9 inch sidewalks (Farquharson, 1950, p. 19). Overall the superstructure was 5939 feet, including the suspension structures, approach spans and anchorages (Farquharson, 1950, p. 19). Anchorages were made of solid concrete and were fifty feet by 170 feet and were fifty feet high (Farquharson, 1950, p. 19). The main towers which the cables saddle were 425 feet in height and with a spacing of thirty-nine feet at the top and fifty feet at the bottom (Farquharson, 1950, p. 19). Each cable consisted of nineteen strands of galvanized wire and totaled a diameter of seventeen inches. The design of the bridge may sound rather large and structurally stable but as mentioned before the bridge was designed to be very sleek looking. By

This bridge was designed in 1844 by father and son Caleb and Thomas Pratt from Boston. Caleb, who was was the father, was an architect and Thomas, who was the son, was an engineer. The Pratt Truss bridge was built after the Truss Design made by William Howe. The reason for creating the bridge was because it was needed a bridge that was strong to carry trains over rivers and because

Because of advancements in today’s technology in construction field, many types of bridges are being constructed depending on the requirement and their suitability for the situations.