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Last edited 16 Nov 2020
Automatic release mechanism
A device that normally holds a door open, but closes it automatically if any one of the following occurs.
NB Approved document B previously defined an automatic release mechanism as:
 Related articles on Designing Buildings Wiki
- Approved documents.
- Door closer.
- Door energy rating.
- Fire detection and alarm systems.
- Fire door.
- Fire Door Inspection Scheme.
- Fire Prevention on Construction Sites.
- Fire protection engineering.
- Hold-open device.
- Inner room.
- Joint fire code.
- Separating floor.
- The Regulatory Reform (Fire Safety) Order 2005.
- Visual alarm devices - their effectiveness in warning of fire.
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