How Did The Hoan Bridge Fail

Executive Summary The report debates the Tacoma narrows bridge failure and the different theories of how it came about, using information about what type of bridge it is and the forces acting on it before and during the collapse. It also discusses ways in which the failure could have been avoided, from changes in the design to modifications to the bridge after its construction.

Revision A building or home can be seen as a place of comfort where individuals feel safe, relaxed, and at peace, but structures aren’t as safe as they really seem. Throughout time natural disasters as the name say’s just happen naturally without warning, and because of this, building codes exist to

Golden Gate Bridge The Golden gate bridge was always a beautiful monument to me because of its golden color. When I was 12 years old my cousin took me to San Francisco, and we crossed the Golden gate bridge. I was scared that it wasn?t safe because when we would come to a complete stop I could feel the bridge moving. I was scared the bridge would collapse! This was an experience I'd never forget. Now I have the opportunity to learn about it, I want to see if the bridge is safe, how its constructed, and who built it?

I. INTRODUCTION 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

The Collapse of the Tacoma Narrows Bridge The Tacoma Narrows Bridge is perhaps the most notorious failure in the world of engineering. It collapsed on November 7, 1940 just months after its opening on July 1, 1940. It was designed by Leon Moisseiff and at its time it was the third largest suspension bridge in the world with a center span of over half a mile long. The bridge was very narrow and sleek giving it a look of grace, but this design made it very flexible in the wind. Nicknamed the "Galloping Gertie," because of its undulating behavior, the Tacoma Narrows Bridge drew the attention of motorists seeking a cheap thrill. Drivers felt that they were driving on a roller coaster, as they would disappear from sight in the trough of

Case History In the late 19th century, the transportation demands of Quebec and other provinces success in transportation like Montreal’s success in railways led to proposals for bridging the St. Lawrence River. Quebec Bridge has a long story behind it, a bridge that was proposed first back in 1852 but it was not complete until 1919. It collapsed two times in this duration once in 1907 killing 75 workers and second time in 1916 killing 13 workers. In this report I will emphasize on the first collapse.

In the middle of nowhere, in that vast expanse of trees, lies The Bridge. Nobody knows it as any other name. It stretches across the Dead River, just sitting there waiting for someone new to find it. At one time it was driven over constantly, a way of travel for the inhabitants who are crazy enough to live out there. But now it is just there, a giant chunk of metal, rusting away into nothing. Occasionally it is used for things like fishing, or as a

Most of the city 's major roads were heavily damaged with the only route out of the city being Crescent bridge. The I-10 Bridge suffered severe damage; scaffolding was broken off from the bridge, and some were totally severed and fell into the lake below. (Des Roches) The Superdome sustained significant damage, including two sections of the roof when waterproof membrane had been

Sometimes the wind would not be perpendicular, in which the oscillation of the bridge was less, but there was still some oscillation. On November 7th, 1940, the Tacoma Bridge collapsed because the oscillation of the bridge became extreme. The oscillation of the bridge was caused by a wind speed of 42 mph (HistoryLink.org). After, approximately, an hour of a corkscrew like motion, the bridge collapsed into Puget Sound. This marked a huge turning point in the design of suspension bridges from that point in time to current time.

In Washington, the Interstate 5 bridge, which crossed the Skagit River, collapsed last month. The damage of this accident included two cars broke and three persons injured. According to officials, the bridge fell into the river after the large truck hit a beam. The bridge had a risky condition called facture critical. The U.S has a lot of bridges; however, nearly two thousand bridges were built between the middle of 1950s and the 1970s, so those ones are obsolete bridges. In addition, back then, the government cut corners in bridge buildings to cost reduction. Although gas and diesel taxes attempted to allocate to restored the bridge, the government cloud not collect money enough to repair the bridge because people began to use efficient vehicle.

The rainy season cause a small set back in the building of the bridge but it was finished soon after.

I-35 W Bridge Failure and Reconstruction Introduction: The I-35W Mississippi river bridge also known as Bridge 9340 officially was an eight-lane, steel truss arch bridge which carried the Interstate 35W across the Mississippi river connected the downtown east and Marcy-Holmes. Its construction began in the year 1964, was finally opened in 1967. It connected the northeast of Metrodome on its south end and the University of Minnesota on the North end. The bridge was the boundary of “Mississippi Mile” downtown riverfront parkland. The north foundation of the bridge was near the hydroelectric plant built in 1988. The south abutment was in an area polluted by the coal gas processing plant. There weren’t any mentions of this in the failure investigations. The bridge was a continuous truss bridge that had a total span of 1,907 ft. It was an 8-lane bridge having a width of 113.3ft. and was 115 ft. high. It was designed by Sverdrup & Parcel to 1961 AASHO (American Association Of State Highway Officials) standard specifications. The construction contract worth more than US $5.2 million at the time, went to Hurcon Inc. and Industrial Construction Company, which built the steel trusses and deck. The piers were not built in the navigation channel instead the center span of the bridge consisted of a single 456- foot steel truss over a 390-foot channel being the longest span of the bridge.

Sam: A real life bridge that is similar to our household bridge is the Hoffstadt Bridge. The Hoffstadt Bridge is a truss bridge 96 miles south of Seattle Washington. (show picture)This bridge connects Hoffstadt Creek and Hoffstadt Mountain. The Hoffstadt Bridge is 2,340 feet long, or about 712 meters. Similar to our bridge, this bridge is supported by trusses on the bottom. The Hoffstadt Bridge also has a flat deck such as ours.

OUTLINE Thesis: The collapsing of the Tacoma Narrows Bridge could have been prevented. I. The questionable break up of the Tacoma Narrows Bridge. LEE 1. On November 7, 1940, the unthinkable happened to the Tacoma Narrows Bridge. It collapsed at Puget Sound in Washington (state), only four months after its completion and after

Jonathan Drago, Annette Englehart, Matthew Parks, Brandon Wagner Phil 251 Professor Wilson 15 January 2013 Maccabiah Bridge Collapse Recap The Maccabiah bridge collapse occurred on July 14, 1997. This tragedy happened in Israel. It took place in the town of Aviv. The bridge collapsed over a large river