What is the thickness determination for a W-shape column when applying TFIFRM?

The thickness determination for a W-shape column when applying TFIFRM (Thermal Fire Insulation Fire Resistance Material) is based on the specific requirements set out in fire protection standards and building codes. A thickness of 24 is typically specified to ensure that the column achieves the necessary fire resistance rating.

This thickness is determined by factors such as the size of the column, its load-bearing capacity, and the fire resistance rating required for the structure. The calculation often includes considerations of the exposure to fire, the material properties of the fireproofing product, and the intended use of the building.

Choosing 24 ensures that the fireproofing application provides adequate thermal protection for the structural steel, thus enhancing its performance during a fire event. This helps in maintaining the integrity of the column, preventing structural failure and ensuring safety for occupants and property.