Fire ratings
Fire classes as A60 and H120 indicate the duration the doors and walls must be able to withstand a type of fire. InterDam uses approved components in doors and walls and extensive research and development result in new innovative light-weight designs which are finally tested by designated approved authorities like DNV and Lloyd's Register.
Fire classes
Class A0 – 0 minutes
Class A60 – 60 minutes
Class H0 – 0 minutes
Class H60 – 60 minutes
Class H120 – 120 minutes
Difference between A- and H-fire ratings
A-fire rated doors and walls are tested with a normal ISO standard fire temperature curve. H-fire rated items are tested with a Hydrocarbon fire curve. The exact difference is the temperature during the testing procedure, H-fire ratd doors and walls are tested at higher temperatures in a longer time period.
The fire doors and fire walls shall maintain its function with respect to fire resistance and structural integrity when exposed to a heat load characteristic for cellulosic (A-fire rating) or hydrocarbon (H-fire rating) fire.
|
Classification |
Minimum time in minutes achieved |
|
|
Integrity and load-bearing capacity |
Insulation performance |
|
|
H120 |
120 |
120 |
|
H60 |
120 |
60 |
|
H0 |
120 |
0 |
|
A60 |
60 |
60 |
|
A0 |
60 |
0 |
Time - Temperature Curves:
