At what temperature does steel start losing 50% of its strength?

Steel begins to lose a significant portion of its strength when exposed to high temperatures, particularly during fire scenarios. At around 1,000 degrees Fahrenheit, steel can lose approximately 50% of its original strength. This is critical knowledge for structural collapse rescue technicians, as it highlights the importance of evaluating the integrity of steel structures in a fire situation. If the steel in a structure is subjected to temperatures at or above this threshold, it may no longer be capable of supporting loads as expected, increasing the risk of further collapse or failure.

Understanding the behavior of steel at elevated temperatures allows rescuers to make informed decisions regarding safety and the potential for structural integrity while working in compromised environments. This information is essential for conducting effective rescues and ensuring the safety of both victims and rescuers.