Fire protection with steel vs. competition
As the critical temperature for steel is around 540°C (give or take, depending on whose country’s test standards one reads at the time), and design basis fires reach this temperature within a few minutes, structural steel requires external insulation in order to prevent the steel from absorbing enough energy to reach this temperature. First, steel expands, when heated, and once enough energy has been absorbed, it softens and loses its structural integrity. This is easily prevented through the use of fireproofing. Likewise, although concrete structures on their own are able to achieve fire-resistance ratings, concrete is also subject to severe spalling, especially with elevated moisture inside the concrete at the time it becomes exposed to fire. There is also fireproofing available for concrete but this is typically not used in buildings. credit the Ansi and Aisi????? Anymore Questions?
please read the Whole thing sweetie Credit Ansi and AISI No need for for me to marry mr wiz or get a degree in that subject. Please feel free to look up thier sites
so when I wrote 540 C you think I did not mean c not f???
2 jets blowing in at 500 MPH does tend to have the ability to remove Blown on (at 50 cfm) insulation….
Bridge and Building steel is about the same and Start to corrupt at 540 C In temperature, Not 2000+?
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