Английская Википедия:Braddock Locks & Dam
Шаблон:Infobox dam Braddock Locks & Dam (previously named Monongahela Locks and Dam No. 2) is one of nine navigational structures on the Monongahela River between Pittsburgh, Pennsylvania and Fairmont, West Virginia. Built and maintained by the U.S. Army Corps of Engineers, the gated dam and the lock form an upstream pool that is for Шаблон:Convert, stretching to Elizabeth, Pennsylvania.
Description
Braddock Locks and Dam consists of the locks located on the right bank and the newly gated dam, that replaced the nearly 100-year-old fixed-crest dam.[1] The older structure in turn had replaced a lock and dam facility opened in 1841 at Port Perry, slightly upriver from Braddock.[2]
Locks
Built in 1953, the locks consist of two side-by-side chambers. The land chamber is Шаблон:Convert wide by Шаблон:Convert long and the river chamber is Шаблон:Convert wide by Шаблон:Convert long.
Dam
Construction of new Braddock Dam, started in 1999, was completed in May 2004 using innovative in-the-wet construction techniques. Two prefabricated hollow concrete segments were constructed at an off-site dry-dock and floated into place and set down on a prefabricated foundation system of sheet-pile cut-off walls and large diameter drilled shafts socketed into bedrock. The float-in segments were built with precast wall panels and cast-in-place bottom and top slabs. Weight of the first Шаблон:Convert by Шаблон:Convert segment was Шаблон:Convert. Dam segment two, at Шаблон:Convert, measures Шаблон:Convert by Шаблон:Convert.
The Шаблон:Convert spillway was equipped with three Шаблон:Convert by Шаблон:Convert Standard Tainter gates and one Шаблон:Convert by Шаблон:Convert Water Quality Tainter gate. Each gate is operated by two hydraulic cylinders. All gates were fabricated and assembled in one piece by G&G in Alabama and were barge shipped to the project site. Weight of the Standard Gate and the Water Quality Gate is 438 kips and 286 kips, respectively.
The construction cost of the new dam was approximately $107.4 million.
See also
References
- Salamon J., Sehgal C., Karaffa W., "Large Width to Height Ration Tainter Gates at Braddock Lock and Dam", Waterpower 2006.
Bibliography
- Английская Википедия
- Monongahela River
- United States Army Corps of Engineers, Pittsburgh District
- Dams in Pennsylvania
- Water transportation in Pennsylvania
- United States Army Corps of Engineers dams
- Dams completed in 1906
- 1906 establishments in Pennsylvania
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
