Doors not only plays an important role in case of any emergency situation but also useful in our day to day activity. There are two main function of fire door in case of fire; when closed they form barrier to stop the spread of fire and when opened they provide means of escape.
The most important thing about Fire Door, is delay spread of fire and smoke without causing too much obstacles to the movement of people and goods.
Fire Door is necessary in order to preserve life and Property through;
a- Compartmentalizing a Fire
b- Creating/Protecting an escape route through the building
The escape route in a fire situation is frequently the route of everyday traffic; hence the fire doors must not obstruct the normal functioning of a building. As earlier noted, door retainers can be used to keep them legally open, although the doors should be regularly closed as part of their routine maintenance in order to prevent warping.
Compartmentalize a building or preserve an escape route, the function of a Fire door, when closed, is to provide resistance to smoke/fire for a minimum specified length of time. It is possible to have steel fire doors offering up to 2 hours resistance but this level of protection is usually only a requirement in specific, high-risk environments.
