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  2. 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.

  3. Boarding stairs - Wikipedia

    en.wikipedia.org/wiki/Boarding_stairs

    As larger aircraft have door thresholds between about 1.5 m and 6 m (5 ft to 20 ft) off the ground, boarding stairs make it easier for passengers to get on and off comfortably by providing a secure connection between the aircraft doors and the ground, following the rules stipulated by the "Dynamic Regulation System" [6]

  4. Evacuation slide - Wikipedia

    en.wikipedia.org/wiki/Evacuation_slide

    Evacuation slide used in an emergency drill. An evacuation slide is an inflatable slide used to evacuate an aircraft quickly. An escape slide is required on all commercial (passenger carrying) aircraft where the door sill height is such that, in the event of an evacuation, passengers would be unable to step down from the door uninjured (Federal Aviation Administration requires slides on all ...

  5. Airport apron - Wikipedia

    en.wikipedia.org/wiki/Airport_apron

    The airport apron, apron, flight line, or ramp is the area of an airport where aircraft are parked, unloaded or loaded, refueled, boarded, or maintained. [ 1 ] [ 2 ] [ 3 ] Although the use of the apron is covered by regulations, such as lighting on vehicles, it is typically more accessible to users than the runway or taxiway .

  6. Top 7 home renovations that can increase your property's ...

    www.aol.com/finance/best-home-renovations...

    Installing an automatic garage door opener with a keypad can also improve convenience and accessibility for you and your family. 2. Entry door replacement: Steel. 💰 Quick facts Average cost: $2,355

  7. Wicket gate - Wikipedia

    en.wikipedia.org/wiki/Wicket_gate

    In the Middle Ages the narrow doors in the city walls also enabled late arrivals to gain entry after the main gates had been closed. [1] If the small entrance in the door of a large gate has a high threshold, it may be called a manway. If it is a separate, narrow entrance next to the main gate, it may be called a pedestrian entrance.

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