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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 ...
The height of the step varies from very low (5–10 centimetres (2.0–3.9 in)) to shin-level or knee-level. Genkan in apartments are usually much smaller than those in houses, and may have no difference in elevation with the rest of the floor; it may simply have a different type of flooring material than the rest of the floor to distinguish it ...
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.
It usually consists of a set of steps or a ramp, located at a doorway, allowing passengers to leave the vehicle in an emergency, vehicle breakdown or accident. A detrainment device is moved from a stored location into an operational position, usually above the coupler at the end of a passenger car. A detrainment device may consist of a manually ...
The earliest carved lintels were created in 723 CE. At the Yaxchilan archaeological site there are fifty-eight lintels with decorative pieces spanning the doorways of major structures. Among the finest Mayan carving to be excavated are three temple door lintels that feature narrative scenes of a queen celebrating the king's anointing by a god. [6]
At the Küssaburg in Baden, the gate of the inner ward is four metres above the ground and was probably reached using a wooden ramp. There are also examples of castles in the Near East and the Caucasus that have raised entrances. The function of the external gateway on the 5th floor of the Maiden Tower in Baku is still a mystery today. Wall and ...