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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.
This delay reserves time for security personnel to get to the door before the door opens. The lock will also release if there is a fire alarm or power failure, but otherwise these locks hold the exit doors shut. Exit control systems can include a "request to exit detector" such as a pushbutton that opens the exit, if exit requests are enabled.
The Keeping All Students Safe Act or KASSA (H.R. 3474, S. 1858) is designed to protect children from the abuse of restraint and seclusion in school. The first Congressional bill was introduced in the United States House of Representatives on December 9, 2007, and named the Preventing Harmful Restraint and Seclusion in Schools Act. [ 1 ]
Integration allows doors to unlock when authorized. Request to exit devices - These allow free egress through an access point without triggering an alarm. Buttons, motion detectors, and other sensors are commonly used. Alarms - Unauthorized access attempts or held/forced doors can trigger audible alarms and alerts.
Electronic lock on a school arts room in Hong Kong. School security encompasses all measures taken to combat threats to people and property in education environments. [1] One term connected to school security is school safety, which is defined as the sheltering of students from violence and bullying, as well as exposure to harmful elements such as drugs, guns and gang activity. [2]
Revolving doors can also be used as security devices to restrict entry to a single person at a time if the spacing between the doors is small enough. This is in contrast to a normal door which allows a second person to easily "tailgate" behind an authorized person. Extreme security can require a particular type of bullet-resistant glass.