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75 IITGN-UL/Façade 76 IITGN-UL/Façade
Event 15: Time 20:05:15: (59.25 min) Event 21: Time 20:20:20: (74.33 min)
Glass and MDF panels at first and second floor level were not damaged due to fire at ground floor level. Thus, to further study effects on glass and MDF During this interval fire begin to die due to insufficient fuel supply. Temperature observed is around 920°C. Minor failure of cement boards at certain
assembly under fire, the wooden crib at first floor level is ignited using gasoline. locations is observed. Unlike Test 1, cement boards performed well and protected beams and slab from direct exposure to heat. Second floor level did not
catch fire
Event 16: Time 20:10:00: (64 min)
Event 22: Time 20:21:10: (75.17 min)
Wooden crib placed at first floor level is ignited through gasoline. Flames erupting from the crib reach the ceiling. Fire also propagates to the smaller
wooden crib placed adjacent to the larger one. Maximum temperature at first floor façade level is around 300°C. No shrinking of MDF panel is observed. Fire extinguishing is initiated for first floor.
Event 17: Time 20:12:00: (66 min) In brief, the timeline of events is presented in Table 12.
Intensity of fire increases and heavy smoke emission is observed at first floor level. Flames penetrate through the boundaries of glass panel where it is
fixed with the aluminium cladding framework through binder (Silicon sealant). MDF panel begins to shrink but does not easily catching fire. Maximum
temperature at first floor level is around 550°C.
Event 18: Time 20:13:15: (67.25 min)
Melted aluminium
MDF panel near larger wooden crib catches fire. Glass panel falls in intact form due to the failure of the binder. Partial failure of cement board above the cladding framework
larger wooden crib is observed. Maximum temperature at first floor level at this time instant is around 850°C. section
Event 19: Time 20:15:00: (69 min)
MDF panel which caught fire falls from the framework. Glass panels have fallen during this interval in intact form due to expansion of the aluminium
cladding framework. This enhanced ventilation conditions within the compartment. Flames leap out of the compartment through. Flashover occurs during
this time. Maximum temperature observed through thermal imaging is around 1050°C. Melting of aluminium cladding can be observed as temperature
went high than melting point of aluminium.
Event 20: Time 20:16:20: (70.33 min)
Image 27: Melted aluminium cladding section at first floor level
All MDF panels at first floor level are burnt. All glass panels have fallen leaving the bare cladding framework. One glass panel breaks within the installation
instead of falling out in intact form. Maximum temperature observed at first floor level is around 1030°C. All fuel has been consumed and temperature
begins to reduce within the compartment. Aluminium cladding framework has been severely damaged. Flames erupting out were unable to propagate at
higher floor level (second level), i.e., no leap-frog effect was observed in this test.