What is combustibility of material? Combustibility of building material is the time factor required for material to burn until the breakage of its strength. There is now a fast awareness to design the structure in such a manner that the safety of occupants is assured to maximum possible extent . Once the fire starts, it tends to ignite all the combustible material in the surrounding areas & in case it is not checked it may spread to other areas in building. If the fire is not controlled within the reasonable period it may lead to collapse entire structure. It is not possible to attain absolute safety from fire but by adopting certain measures it is definitely possible to provide reasonable safety from fire. The byproduct of fire I.E. The smoke & hot toxic gases causes maximum damage to human life. Smoke reduces the visibility & hot toxic gases produce suffocating effect & the combined effect of both bring mass panic which turns maximum damage to life. Thus besides mak...