the classification

We come across abbreviations in everyday life all the time – usually we don’t even think about what the abbreviation means in detail – we just know. But what does it all look like in fire protection? Here, too, there is a jungle of abbreviations that we have illuminated for you.
We have to deal with the classification EI260-C5-Sa time and again, especially for fire doors and gates. We have taken a look at what this means for you!

what it means

The “E” in this classification is derived from “Etanchèitè” and stands for room closure. This indicates the ability of a building component with a room-separating function to resist fire from an attacking side. The passage of fire to the non-flame side is prevented.

The “I” (I1, I2) is derived from “Isolation” and describes the ability of the component to limit the transmission of fire and heat to such an extent that there is no danger to persons or ignition of combustible materials on the side facing away from the fire. An average temperature rise of 140°C and a maximum temperature rise of 180°C must not be exceeded. I1 differs from I2 in the positioning of the sensors for the surface temperature during tests. For fire doors or gates in Europe, the usual requirement is I2.

The number “60” represents the classification time of the fire doors and gates. Classification times must be given in minutes for each of the above characteristics, with classification times of 30, 60, 90 and 120 being the most common in Europe.

The “C” describes the self-closing property of the component and is derived from “Closing“. The classes C0 to C5 define the self-closing cycles of the component. Class C5, for example, stands for very frequent operation. Class C3 stands for a moderate number of actuations mainly by persons with a certain motivation to handle with care. Class C2, for example, is widely used for fire doors: a low number of operations by persons with a high motivation for careful handling.

C5 … ≥200,000 cycles
C4 … ≥100,000 cycles
C3 … ≥50,000 cycles
C2 … ≥10,000 cycles
C1 … ≥500 cycles
C0 … 1 to 499 cycles

Depending on the classification, the fire protection element to be tested is opened and closed by the testing body on the basis of a precisely described test sequence. In the case of a test for classification C5, this means at least 200,000 times.

The self-closing property must generally be maintained under all conditions, even if the power supply is interrupted.

The “S” is derived from “smoke” and means nothing other than limiting smoke permeability. The subscript “a” is derived from “ambient“, which corresponds to the ambient temperature. S200 or Sm indicates the smoke tightness at ambient temperature as well as at a temperature of 200°C, this respectively on the outside and inside of the fire or smoke protection elements to be tested.

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