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2. Crash bar - Wikipedia

   en.wikipedia.org/wiki/Crash_bar

   A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.

3. Kelly tool - Wikipedia

   en.wikipedia.org/wiki/Kelly_tool

   The Kelly tool was intended specifically for opening doors and other barriers. Modern versions often are modified along the lines of the Halligan bar, especially at the chisel end. Originally the chisel blade was flat and straight; more recently it has tended to take on a curved and forked form, similar to the claw of a carpenter's hammer ...

4. Victoria Hall disaster - Wikipedia

   en.wikipedia.org/wiki/Victoria_Hall_disaster

   The resulting inquiry led to legislation that public entertainment venues be fitted with a minimum number of outward opening emergency exits, [2] which led to the invention of "push bar" emergency doors. [10] This law still remains in force. [2] No one was prosecuted for the disaster [2] and the person responsible for bolting the door was never ...

5. Door breaching - Wikipedia

   en.wikipedia.org/wiki/Door_breaching

   Utilizing a breaching tool is unnecessary if the door is unlocked and easy to open. [5] [3] [6] [1] If the door is locked, breachers can attempt to force inward-opening doors with a strong kick. The breacher will aim to hit the door near the locking mechanism, but not kick the doorknob itself as one can easily twist an ankle doing so. [7]

6. Door closer - Wikipedia

   en.wikipedia.org/wiki/Door_closer

   During a fire, any door that penetrates a firewall must be fire-rated. Fire doors need to be closed in case of fire to help prevent the spread of fire and smoke. Any fire doors which are normally held open must automatically close and lock when a fire is present in the building. The function of an emergency exit rim device (crash bar or panic ...

7. This Nighttime Habit Could Be A Key Indicator Of Dementia ...

   www.aol.com/nighttime-habit-could-key-indicator...

   "Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Good sleep is crucial for your overall health, but new research suggests it could impact your ...