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Indian Institute of Technology (IIT) Roorkee 
Method and apparatus for testing fire behavior of façade materials 
K. B. Mishra and Ankit sharma 
Indian Institute of Technology (IIT) Roorkee 
Application type:
Applied - 2020-03-12 
Application Number:
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Indian Institute of Technology (IIT) Roorkee 
The present invention relates to a test device, method to classify new materials for ensuring fire safety and preventive measures in the existing and upcoming high-rise buildings worldwide. It includes realistic physics of exterior wall assembly. Chimney effect is achieved by keeping gap of 30-200 mm between the cladding and insulation. This gap can be varied depending upon the real conditions in façade assembly. Post flashover fire scenario (1300 kW scaled down to 10 kW) is considered for testing the façade materials. Failure criteria was fixed by defining critical values of temperature (>500 0C) and flame height (H/L>1.4). The present method incorporates the fire effluents as classification criteria together with the mass burning rate (MBR), fire length and temperature. Effect of façade fire accidents on the environment can be estimated in the present setup. It requires 80-90 % less material and results in material saving by 80-90 %. The cost of carrying out tests is also 20 times lesser and the required time is less by 70-80 %. The present invention is easy to carry out and manage in terms of safety and workforce required. 

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