Page 50 - UL_Report On_Part 1

41 IITGN-UL/Façade 42 IITGN-UL/Façade

18:32:00 Ground floor First floor Second floor Glass panel at first floor had fallen.
5.45 min Cement boards at ground floor still intact. Max roof temperature at first floor
is about 280°C
-5 min Data acquisition started

ACP sheets at first floor catch fire.
0 min Wooden crib placed outside compartment 1 is ignited 6.5 min Temperature near steel beam is about 60°C indicating local Maximum temperature at first floor

Flames penetrate into the GF compartment failure of cement board is around 340°C
2.2 min
through ventilation opening
Flashover occurs during this interval. Max roof temp. is around 816°C. All ACP sheets & glass panels Second floor roof level
Cotton curtains catch fire and max temp recorded is 10.5 min Major failure of cement boards allowing temp to rise near beam around have fallen. Maximum temp. temperature around 54°C
2.75 min 120°C. Aluminium framework has melted completely at certain locations
by TC 22 around 200°C at roof level is 307°C
Halogen lights are burnt. Smoke obscuration has increased. Temp. begins to reduce as all fuel within compartment is consumed.
3.03 min 11.62 min Local failure of cement
Max. temp by TC 22 is about 310°C Temp. near steel beam is about 150°C whereas roof temp. is 710°C board occurs

Fire start to spread off through curtains increasing Lights at first and
3.13 min second floor are burnt Flashover occurs at first floor level.
temperature around 400°C Max roof temp is around 675°C. Fire has still not propagated to
16.67 min Fire dies out due to inadequacy of fuel. Reduced temp. is about 305°C Major failure of cement board thereby second floor. Temp.
3.33 min Max. roof temp is about 550°C whereas near beam beneath is about 56°C
cement board is around 19°C. increasing temp from 220°C to 510°C.

3.5 min ACP at ground level has not caught fire. 18.55 min Fire propagates to second floor.
Max temp is about 226°C
Temp at base level increased to 40°C
21.83 min Fire extinguishing begins Fire extinguishing begins Fire extinguishing begins
Wooden crib placed within compartment catches fire. Fire penetrating at
3.67 min Glass panel has fallen in intact form due to failure of binder. first floor level through
Max roof temp near façade is 675°C whereas at base is around 50°C. leap frog effect

Three glass panels fall in intact form enhancing ventilation conditions.
4.95 min Max temp at roof level is about 740°C (>660°C) leading to melting of Max temp at first floor
level is around 190°C
aluminium cladding framework. Table 4: Timeline of events at all floor levels during fire Test 1