2. Factors influencing element stability
The resilience of a structure to fire is conditioned by a series of crucial factors. It is essential to consider them holistically to guarantee optimum performance in the event of fire. The key elements are :
duration and severity of fire: the extent of exposure to fire, both in terms of time and intensity, can significantly affect structural performance; low-intensity but long-lasting fires can be just as damaging as short-lived but very intense ones;
• type of structural system and imposed loads: the behavior of a structure in the event of fire varies according to the structural system adopted, whether isostatic (simply supported) or hyperstatic (statically indeterminate); moreover, the per-manent and variable loads exerted on the structure modulate its reaction to fire;
intrinsic strength...
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Factors influencing element stability
Fire behavior of steel
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