What factor is primarily evaluated during TFIFRM thickness testing on structural components?

The primary factor evaluated during TFIFRM (Thermal Fireproofing Insulation Fire Resistance Material) thickness testing on structural components is thickness. This measurement is critical because adequate thickness of fireproofing material is essential to ensure that the structural components can withstand the required fire exposure durations. A specific thickness is often specified in design documents to meet fire resistance ratings, which is necessary to protect the underlying structure from heat and fire damage.

During testing, attention is focused on confirming that the applied fireproofing meets the required thickness specifications. This is important in ensuring that the material provides effective fire resistance as designed. If the thickness is insufficient, the performance of the fireproofing may be compromised, potentially leading to structural failure in a fire event. Thus, accurately measuring thickness is a key component of ensuring safety and compliance with building codes and standards.