Home is everyone's safe haven, I don't know if my friends have paid attention to this "door" when they go home.
This door usually appears in stairwells and is closed for a long time, so do you know what role this door plays in daily life?
This is the "fire door" that separates the fireworks in the event of a fire!
This seemingly inconspicuous "door" is actually very important! Everyone must pay attention to the correct use of this door in daily life, which may open up an escape route for you in a fire.
What is a Fire Door?
A fire door is a door that can meet the requirements of fire stability, integrity and thermal insulation for a certain period of time. It is a fireproof partition with a certain fire resistance such as fire partitions, evacuation stairwells, and vertical shafts.
In addition to the function of ordinary doors, fire doors also have the effect of preventing the spread of fire and smoke diffusion, which can prevent the spread of fire within a certain period of time and ensure the evacuation of personnel.
Should this door be closed or opened?
Some friends do not have questions, feel that this door is closed unreasonable, and it is inconvenient to walk, and may also affect the ventilation of the corridor, but the full name of this door is normally closed fire door, which can "protect life" in the event of a fire.
Let's take a look at a set of diagrams that simulate two scenarios for opening and closing a door:
When a normally closed fire door is opened
When normally closed fire doors
A closed fire door keeps smoke and flames at bay in the area where the fire is burning, leaving a safe escape route for personnel and valuable rescue time for firefighters.
Therefore, we see in life that the normally closed fire door is opened, please close it casually, maybe this inadvertent action can help others avoid the intrusion of smoke and fire.
Precautions
Fire doors are not doors that can't be burned, and if they burn long enough, fire doors will burn too.
In order to make the normally closed fire door play its due role in the fire escape, please maintain it together, do the following points, protect the safety of yourself and others, and have one more hope of escape when the accident comes.