Common knowledge points of Australian AS1530.4 fire resistance test

AS 1530.4 is the Australian standard for fire resistance tests on building materials, components and structures. Its full name is 《AS/NZS 1530.4: Methods for fire tests on building materials, components and structures - Fire - resistance test of elements of construction》. 

The following is its relevant content:AS1530.4 Australian Fire Resistance Test - Test Scope:Applicable to all types of building materials, components and structures, including walls, floors, roofs and ceilings, columns, beams, brackets and trusses, door casings and shutter assemblies, non-insulating glazing, air ducts, service penetrations and control joints, fire dampers and air transfer grille assemblies, etc.

Note: For horizontal structural members, it is necessary to refer to the actual usage and consider whether they need to bear weight in order to be more practical.

AS1530.4 Australian fire resistance test - Determination basis: Loss of integrity: When the cotton pad is ignited or the back-fired surface burns for more than 10 seconds, the specimen is considered to have lost its integrity;During the test, a 6mm diameter probe can pass through the crack into the furnace and the probe can be no less than 150mm along the length of the crack;When a 25mm diameter probe can pass through the crack into the furnace, the specimen is considered to have lost its integrity. 

Loss of thermal insulation: When the average temperature rise of the back-fired surface of the specimen exceeds the initial average temperature of the specimen surface by 140℃ or the temperature rise of the back-fired surface at any point exceeds the initial temperature of that point by 180℃, the specimen is considered to have lost its thermal insulation.AS1530.4 Australian fire resistance test - furnace temperature rise curve:The temperature rise varies at different times;Ambient at 0 min843℃ at 30min927℃ at 60min1010℃ at 120min or over