Search results
Results from the WOW.Com Content Network
The system was renamed the McAlpine Locks and Dam in 1960 in honor of William McAlpine, who was the only civilian to have ever served as district engineer for the Corps of Louisville. At present, the normal pool elevation is 420 feet (130 m) above sea level and the drainage area above the dam is 91,170 square miles (236,000 km 2 ).
The program's purpose was to replace the system of outdated wicket dams and small locks. The new dams were non-navigable and made of concrete and steel. Each dam has two adjoining locks, one 600-foot by 110-foot chamber, and a 1,200-foot by 110-foot chamber to accommodate fifteen barges that can lock through in one maneuver. [2]
Middle gate of 5 upper gates at McAlpine Dam. (There are 4 more such gates at the lower gate site, next to the LG&E Ohio Falls Generating Station.) These gates are called Tainter gates after their designer, Jeremiah Burnham Tainter (1836-1920). Each gate is 100 feet wide and 22 feet high.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more
Pressure forces on a submerged body act perpendicular to the body's surface. The design of the Tainter gate results in every pressure force acting through the centre of the imaginary circle of which the gate is a section, so that all resulting pressure force acts through the pivot point of the gate, making construction and design easier.
Free premium casino-style slots and classic video poker by the creators of authentic PC & Mac casino slots from IGT, WMS Gaming, and Bally!
The locks can be filled or emptied in around 8 minutes. The upper pool is normally at an elevation of 383.0 feet (116.7 m), mean sea level and the lower pool elevation is 358.0 feet (109.1 m), mean sea level. The lift (difference) between the two pool is 25 feet (7.6 m). 25 million US gallons (95,000 m 3) of water is required to operate the lock.