This standard replaces the previous British Standard for fire resistance testing, BS 476.
The Titan door is suitable for a wide variety of fire door applications in domestic and commercial buildings.
The sequence of images below shows a test being carried out on one of our Titan doors. Note that the door holds back flames for more than a full 30 minutes. This is being subjected to temperatures on the other side of the door, climbing rapidly to 600ºC, and in excess of 800ºC well before the 30 minute point!
The tests are designed to replicate the product’s intended end-use i.e. doors are built into an appropriate supporting construction. The specimen and any relevant supporting construction is built into a 3m x 3m restraint frame which is mounted on the front of a furnace.
The temperature within the furnace is controlled according to an internationally-accepted time/temperature regime, intended to simulate a post flashover condition. Flashover is the point at which all objects in the fire compartment have ignited.
Testing is continued for the required duration – 30 minutes – or until the specimen fails and it is no longer safe to continue.
Failure relates to integrity, insulation and load-bearing capacity (if appropriate).
Integrity failure is determined by 3 criteria:
Cotton pad – this shows that gases passing through the specimen are sufficiently hot to ignite combustible material on the non-fire side and therefore spread the fire
Gap gauges – these measure the width of gaps in the specimen and must remain below prescribed levels.
Continuous flaming – simply the fact that sustained flaming has occurred on the non-fire side.