Page 86 - UL_Report On_Part 1

77 IITGN-UL/Façade 78 IITGN-UL/Façade

18:54:00 Ground floor First floor Second floor 45.67 min Two glass panels fall out intact. 1 MDF sheet burns and falls

-12 min Data acquisition begins 46.83 min Another set of glass and MDF panels fall. Temp reaches around 1186°C (>660°C)
Flames begin to leap out from ground
-10.75 min Fire load in plastic basket near crib is manually ignited 48 min Flashover occurs during this interval. Temperatures reached around 1200°C floor. Temp at first floor level is about 735°C

0 min Re-ignition of fuel source with extra waste papers is attempted Fire did not propagate to first floor and failed
55.75 min Fire load is consumed and fire begins to die out. Temp reduce to 620°C to ignite MDF panels (i.e. no leap-frog observed
from ground to first floor)
Wooden crib placed near ignition source ignites.
2 min TC at base level shows max temp of 60°C whereas TC at roof level 59.25 min Ignition of wooden crib using gasoline
above crib shows temp of 275°C. Temp beneath cement board is about 23°C

29 min Wooden crib is consumed and fails to ignite the components within 66 min IMDF panel begins to shrink.
the compartment. Video camera stops functioning Temperature is around 550°C
MDF panel catches fire. Glass panel has
33 min Ignition with gasoline is attempted
67.25 min fallen intact due to failure of binder.
Temp reach around 850°C
35 min Cement boards are intact. Max temp observed is around 475°C Flashover occurs during this interval.
69 min
Temperature increased to 1050°C (>660°C)
36.47 min Cement board placed above wooden crib fall.
Max temp at this instant is around 630°C All glass and MDF panels have fallen.
70.33 min Aluminium cladding framework
has melted at several locations
41 min MDF panel begins to shrink. Temp reaches about 685°C
Fire begins to die out. Minor failure Second floor does
74.33 min of cement boards is observed not catch fire
Glass panel falls in intact form due to failure of binder.
44.67 min Max temp is about 755°C. Unlike ACP, MDF was not easily catching fire 75.17 min Fire extinguishing begins Fire extinguishing begins Fire extinguishing begins