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Pairs of bar-link saddle chains one above another with suspender rods hold the deck, which is 220 feet (67 m) in length and 22 feet (6.7 m) wide. [9] [a] Thomas Telford's method of "three lines of rectangular cross-section eye-bar links with short connecting links and cross-bolted" was copied from his 1822 Menai Suspension Bridge construction.
Consider the catastrophe of Silver Bridge, this was an instance where only 2 eyebars were paired together as supports in the chain. It was more common practice to use 4 eye bars pinned together in the instance where one eyebar failed 3 more would be able to split the load rather than just the single eyebar left.
The last surviving chain-linked bridge of Gyalpo's was the Thangtong Gyalpo Bridge in Duksum en route to Trashi Yangtse, which was finally washed away in 2004. [10] Gyalpo's iron chain bridges did not include a suspended-deck bridge , which is the standard on all modern suspension bridges today.
The first iron chain suspension bridge in the Western world was the Jacob's Creek Bridge (1801) in Westmoreland County, Pennsylvania, designed by inventor James Finley. [1] The Golden Gate Bridge in San Francisco, California, is another example of a suspension structure. Much like the suspended building structure, towers hold the weight and ...
Stanchions and velvet rope. A stanchion (/ ˈ s t æ n tʃ ən /) is a sturdy upright fixture that provides support for some other object. [1] It can be a permanent fixture. In nautical terms, the stanchion. is the thick and high iron that with others equal or similar is placed vertically on the gunwale, stern and tops.
It was a chain suspension bridge, using 1¼ inch bars. It was designed by Judge James E. Finley, and was 136 feet long by 15 feet wide. [4] It was destroyed by flood in 1810 or 1812. [3] [4] The fourth bridge was also a chain suspension bridge, and though damaged by floods in 1815, it lasted until 1840. [3]
"View of the Chain Bridge invented by James Finley Esq." The Port Folio, June 1810, William Strickland, delineator. [2] The Chain Bridge at Falls of Schuylkill, an iron-chain suspension bridge designed by James Finley, was built at Falls of Schuylkill in 1808. [3] It was among the earliest suspension bridges erected in the United States.
The suspension bridge's architecture is better at handling the load in the middle of the bridge, while the cable stayed bridge is better suited to handle the load closest to the tower. Combining these two architectural engineering ideas into a hybrid has been done in Istanbul with the Yavuz Sultan Selim Bridge , and in New York City with the ...