Typical building regulations usually require certain elements of structure to be fire resistant for more than 30 minutes and up to a specified minimum period of time. The thickness of any fire protection material depends on a number of factors, such as:
- Duration of fire resistance specified
- Type of protection used, e.g. board, paint, spray etc
- Perimeter of the part of steel section exposed to fire
- Shape and dimensions of the steel section
- Critical temperature of the steel member, calculated by static engineer
To determine how these various factors affect the fire resistance, all Promat products and systems have been tested at accredited laboratories around the world to a variety of standards.
Tests carried out in accordance with these standards are performed on both loaded and unloaded beams and columns which are protected by fire protection material. Steel surface temperatures are monitored with thermocouples to assess the performance of the fire protection.