FSZ 2373  | page  10 of 38 
 
6 
Departure from standard 
The specimen was left to cure under standard laboratory atmospheric conditions as opposed to a 
controlled environment of the average temperature of 25 ± 2 deg C and relative humidity of 45 ± 
5%. The specimen was conditioned for a period of 5 days prior to testing, the requirements of AS 
1530.8.1-2018 stipulates a minimum 7 days. The test laboratory confirms that the minor departure 
in conditioning would not have significantly affected the results of this test. 
 
7 
Termination of the test 
The test was terminated at 61 minutes in accordance with the standard. 
 
8 
Test results 
8.1 
Critical observations 
The following observations were made during the fire-resistance test: 
0 minutes -  Alight cribs placed in position. 
25 seconds -  Specimen moved in position – exposure to 29 kW/m². 
1:00 minutes -  Smoke is emitted from the exposed face of the wall, flaming of the sealant along 
the panel joint adjacent to Crib #4. 
2:25 minutes -  Specimen moved in position – exposure to 21 kW/m². 
3:18 minutes -  Crib #3 has ceased flaming. 
3:25 minutes -  Specimen moved in position – exposure to 14 kW/m². Seals around the exposed 
side of perimeter of the window are starting to melt, photograph 10. 
4:25 minutes - Specimen moved in position – exposure to 11 kW/m². Crib #1 has ceased flaming. 
5:10 minutes -  Flaming of the sealant along the corner panel joint adjacent to Crib #1. 
5:25 minutes -  Specimen moved in position – exposure to 8 kW/m². 
5:50 minutes -  Cribs #1 and #2 have ceased flaming. 
6:25 minutes -  Specimen moved in position – exposure to 7 kW/m². 
6:40 minutes -  Smoke is observed on the unexposed side of the wall, adjacent to the corner crib 
#1.  
7:45 minutes -  Flaming on sealant in the corner, adjacent to crib #1 has ceased.  
15 minutes -  Radiant heat source shielded from the specimen. Radiometer is positioned 250-
mm from the exposed face of the wall specimen in front of the inside corner, 
adjacent to crib #1. Cracks in the sealant along the panel joint adjacent to crib #2 
have been observed, photograph 17. 
17 minutes -  No flaming, cracking or signs of any 3-mm through gaps. 
 
 

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