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  2. Transom (architecture) - Wikipedia

    en.wikipedia.org/wiki/Transom_(architecture)

    Transom windows which could be opened to provide cross-ventilation while maintaining security and privacy (due to their small size and height above floor level) were a common feature of apartments, homes, office buildings, schools, and other buildings before central air conditioning and heating became common beginning in the early-to-mid 20th century.

  3. Interlock (engineering) - Wikipedia

    en.wikipedia.org/wiki/Interlock_(engineering)

    The first form of interlocking security is more mechanical. For example, if an individual is entering a building, there may be two sets of doors to enter from. As the individual enters the first door, that door will close before they enter through the second door. This type of interlocking security can prevent piggybacking or tailgating. The ...

  4. Threshold (architecture) - Wikipedia

    en.wikipedia.org/wiki/Threshold_(architecture)

    A worn-out wooden threshold. A threshold is the sill of a door. Some cultures attach special symbolism to a threshold. It is called a door saddle in New England. [citation needed] Door thresholds cover the gap between the floor and the door frame, helping to prevent any water leaks, insects or draughts from entering through the opening.

  5. Platform screen doors - Wikipedia

    en.wikipedia.org/wiki/Platform_screen_doors

    The doors form a 2.5 m (8 ft 2 in) high glass and steel screen the entire length of the platform. The door opening is 2.1 m (6 ft 11 in) wide, and the system includes integrated passenger information and digital advertising screens.

  6. College football transfer portal sets up a ‘no-win situation ...

    www.aol.com/college-football-transfer-portal...

    Penn State University is playing its first game in the College Football Playoff in just a few days and is facing a shakeup in the quarterback room thanks to the sport’s wide-open transfer rules.

  7. 49ers suspend LB De'Vondre Campbell for rest of season ... - AOL

    www.aol.com/sports/49ers-suspend-lb-devondre...

    Campbell, who is 31 years old and a nine-year NFL veteran, was on a one-year, $5 million deal with the 49ers. For the 49ers, the Campbell drama during a loss to the Rams was a surprising part of a ...

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