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Point Pleasant is a small unincorporated community in southern Monroe Township, Clermont County, Ohio, United States. It is located on the Ohio River, around 25 miles (40 km) southeast of Cincinnati. U.S. Route 52 passes through Point Pleasant, where it intersects State Route 232 .
- Point Pleasant (Ohio) - Wikipedia, la enciclopedia libre
Point Pleasant (Ohio) Point Pleasant es un área no...
- Point Pleasant, Ohio - Simple English Wikipedia, the free ...
Point Pleasant is a small unincorporated community in...
- Point Pleasant (Ohio) - Wikipedia, la enciclopedia libre
- History of Eyebar-Chain Bridge Construction
- Silver Bridge Structure
- Design Loads
- Wreckage Analysis
- Aftermath
- Legacy
- In Popular Culture
- Silver Memorial Bridge
- See Also
- Further Reading
At the time of the Silver Bridge construction, eyebar bridges had been built for about 100 years. Such bridges had usually been constructed from redundant bar links, using rows of four to six bars, sometimes using several such chains in parallel. An example can be seen in the Clifton Suspension Bridge, designed by Isambard Kingdom Brunel having cha...
Low redundancy, high strength
The eyebars in the Silver Bridge offered little to no redundancy, as each chain link consisted of just two eyebars in parallel. (Each bar was 45–55 feet long and 2 inches thick; bars were joined together at the eyeholes using cylindrical pins 11.5 inches in diameter.) These eyebars were made of a new, higher-strength steel (more than twice the tensile strength of other steels of that era), which meant fewer eyebars per link were needed to achieve the required strength to support the bridge (e...
Rocker towers
The two towers that supported the two suspension chains rose nearly 131 feet (40 m) from the bridge's main piers. They featured a "rocker" design, which allowed them to tilt slightly at their bases in response to unbalanced loading on the bridge, or to changes in chain length due to temperature change. Prior to their use on the Silver Bridge, rocker towers had been used on a similar bridge in Braziland, before that, on two large bridges in Europe. Although the rocker towers required the bridg...
The bridge, which was designed in 1926–27,: 114 generally conformed to the engineering standards of its era, according to the investigation into the bridge's collapse, and the investigation's review of the original stress calculations underlying the design found no significant errors.: 15 A few years earlier, in 1923, AASHO, a national standards-se...
The bridge failure was due to a defect in a single link, known as eyebar 330, on the north of the Ohio subsidiary chain, the first link below the top of the Ohio tower. A small crack was formed through fretting wear at the bearing, and grew through internal corrosion, a problem known as stress corrosion cracking. The crack was only about 0.1 inches...
The collapse focused much-needed attention on the condition of older bridges, leading to intensified inspection protocols and numerous eventual replacements. There were only two bridges built to a similar design, one upstream at St. Marys, West Virginia, and the notably longer Hercílio Luz Bridge at Florianópolis, Brazil. The St. Marys bridge was i...
Reviewing the collapse and subsequent investigation in his 2012 book To Forgive Design: Understanding Failure, engineering historian Henry Petroskifinds it "a cautionary tale for engineers of every kind." As a result of the thoroughness of the investigation, the cause of the disaster was precisely and indisputably found to be "a design that inadver...
In his 1970 book Operation Trojan Horse, and in his 1975 book The Mothman Prophecies, Fortean author John Keel linked the Silver Bridge collapse to alleged sightings of the Mothman. The story was adapted as a film by the same name, released in 2002. Author Jack Matthews wrote a novella, Beyond the Bridge, written as the diary of an imaginary surviv...
The Silver Memorial Bridge is a cantilever bridge that spans the Ohio River between Gallipolis, Ohio, and Henderson, West Virginia. The bridge was completed in 1969 as a replacement for the collapsed Silver Bridge, although it is located about 1 mile (1.6 km) downstream (south) of the original. The bridge carries US 35 across the river and serves a...
Seim, Charles (May 2008). "Why Bridges Have Failed Throughout History". Civil Engineering. 78(5): 64–71, 84–87.Bullard, Stephan; et al. (2012). The Silver Bridge Disaster of 1967. Charleston, S.C.: Arcadia Publishing. p. 128. ISBN 978-07385-9278-7.- 700 feet (210 m)
- 2,235 feet (681 m)
- May 30, 1928
- Ohio River
Tour the birthplace of Ulysses S. Grant, Civil War general and two-term president of the United States. See how the Grant family established themselves in southern Ohio in the early 19th century and hear the fascinating story of the house and how it traveled in Ohio until its return to Point Pleasant. Average visit time: Allow 1 hour.
1 de abr. de 2022 · Ulysses S. Grant, commander of the Union Army in the Civil War and 18 th president of the United States was born in this one-story, timber-frame home on April 27, 1822 to Jesse and Hannah Simpson Grant. The Grants settled in Point Pleasant in 1821 and Jesse took charge of the tannery located nearby. The growing family paid $2 a month rent.
Coordinates: 38°53′39″N 84°13′58″W. The Grant Birthplace in Point Pleasant, Monroe Township, Ohio was the birthplace of U.S. President Ulysses S. Grant, who was born there in 1822. The home was built in 1817, and in 1821 Jesse Root Grant wed Hannah Simpson Grant (Ulysses's parents) and they moved into the home where they paid $2 a month rent. [2] .
