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A United States Government Class 5-B vault door, which has been tested and approved by the Government under Fed. Spec. AA-D-600D, is ballistic resistant and affords the following security protection: 20 man-hours against surreptitious entry. 30 man-minutes against covert entry. 10 man-minutes against forced entry.
According to 49 CFR 571.206 S4.3.1, [3] when the safety lock is engaged, it "prevents operation of the interior door handle or other interior latch release control and requires separate actions to unlock the door and operate the interior door handle or other interior latch release control," effectively locking passengers inside the vehicle.
Fail-safe locking devices are unlocked when de-energized. Direct pull electromagnetic locks are inherently fail-safe. Typically the electromagnet portion of the lock is attached to the door frame and a mating armature plate is attached to the door. The two components are in contact when the door is closed.
An in-floor safe installed in a concrete floor is very resistant to fire. However, not all floor safes are watertight; they may fill with water from fire hoses. Contents can be protected against water damage by appropriate packaging. Reinforced, fireproof cabinets are also used for dangerous chemicals or flammable goods.
Crash bar doors in a school, with upper vertical rod latches. 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.
For strong storms or tornadoes, a storm safe room must be built to withstand high winds and flying debris, even if the rest of the residence becomes severely damaged or destroyed. Specific concerns include: [2] The safe room should be adequately anchored to the foundation to resist overturning and uplift. The walls, ceiling, and door of the ...