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  2. Master keying - Wikipedia

    en.wikipedia.org/wiki/Master_keying

    A maison key system is a keying system that permits a lock to be opened with a number of unique, individual keys. Maison key systems are often found in apartment building common areas, such as main entrance or a laundry room where individual residents can use their own apartment key to access these areas.

  3. Tainter gate - Wikipedia

    en.wikipedia.org/wiki/Tainter_gate

    The Tainter gate is used in water control dams and locks worldwide. The Upper Mississippi River basin alone has 321 Tainter gates, and the Columbia River basin has 195. A Tainter gate is also used to divert the flow of water to San Fernando Power Plant on the Los Angeles Aqueduct. [1] Tainter gate at McAlpine Dam, Ohio River, Louisville, Kentucky

  4. List of locks and dams of the Ohio River - Wikipedia

    en.wikipedia.org/wiki/List_of_locks_and_dams_of...

    They determined that building a system of locks and dams to form pools was the best solution to the problem. Following the opening of the lock and dam at Davis Island in 1885, the venture proved to be worthy. In 1910, the Rivers and Harbors Act was authorized by Congress. The Act allowed the production of a system of locks and dams along the Ohio.

  5. Water distribution system - Wikipedia

    en.wikipedia.org/wiki/Water_distribution_system

    An example of a water distribution system: a pumping station, a water tower, water mains, fire hydrants, and service lines [1] [2]. A water distribution system is a part of water supply network with components that carry potable water from a centralized treatment plant or wells to consumers to satisfy residential, commercial, industrial and fire fighting requirements.

  6. Lock (water navigation) - Wikipedia

    en.wikipedia.org/wiki/Lock_(water_navigation)

    The rise is the change in water-level in the lock. The two deepest locks on the English canal system are Bath deep lock [14] [15] on the Kennet and Avon Canal and Tuel Lane Lock on the Rochdale Canal, which both have a rise of nearly 20 feet (6.1 m). Both locks are amalgamations of two separate locks, which were combined when the canals were ...

  7. Lockport Powerhouse - Wikipedia

    en.wikipedia.org/wiki/Lockport_Powerhouse

    The powerhouse was also the home of the waste gate controls. The lock and gates were designed to manage a 40-foot (12 m) drop in canal elevation between the two municipalities. [3] A second phase of construction occurred from 1922 to 1933 to handle differing water loads following the opening of the Ohio River Standard Navigation Lock.

  8. Water supply network - Wikipedia

    en.wikipedia.org/wiki/Water_supply_network

    Connections to the sewers (underground pipes, or aboveground ditches in some developing countries) are generally found downstream of the water consumers, but the sewer system is considered to be a separate system, rather than part of the water supply system. Water supply networks are often run by public utilities of the water industry.

  9. Smart lock - Wikipedia

    en.wikipedia.org/wiki/Smart_lock

    Industrial smart locks (passive electronic lock) are a branch of the smart lock field.They are an iterative product of mechanical locks like smart locks. However, the application areas of industrial smart locks are not smart homes, but fields that have extremely high requirements for key management, such as communications, power utilities, water utilities, public safety, transportation, data ...

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