To maintain the fireproofing products, this requires unanimous certifications of structural steel qualification lists; this certification is made upon a fire test with a high temperature measurement defined through international standards which eventually control the test process. The test criteria was declared to be below the 400C limit in Japan , unlike North America Europe and China, it was set to reach the 540C limit. All these tests are meant to define the fire resistance ratio duration. You have to know more about it by reading the article below.
A great attention has to be paid when taking the test to assure the desired thermal expansion of organizational compounds and avoid the damage caused by fire resistance simulators of floors or walls.
The open web steel basically requires much of fireproofing spray as it's not very huge in size or amount yet. In addition, it also needs great amounts of the plaster spray which vaporizes while coating the metal.
Structural steel demands outsourced fireproofing to prohibit the steel from getting weak when projected to the fire. During the heating process the metal extends, gets softer and eventually loses the complex integrity it used to have. With satisfying amount of energy, the metal melts and turns into solution. The conducted heat to the steel could be taken into lower degrees through using the appropriate fireproofing substances. Once the concrete polygons that establish buildings are declared ready to show fire resistance high ratios with no more fireproofing allowed, the concrete confronts massive spalls, especially if it has a high moisture ratio.