What is essential to verify during the application of SFRM on a column?

In the application of Spray-Applied Fire-Resistive Materials (SFRM) on a column, verifying the proper mixing volume is essential. This is critical because the fireproofing material needs to be mixed according to the manufacturer's specifications to ensure that it achieves optimal performance. The correct mixing volume ensures that the material has the appropriate consistency, density, and coverage to effectively provide the required fire resistance. If the mixing ratio is incorrect, it can lead to inadequate fire protection or a failure to meet code requirements.

Proper mixing is crucial for achieving the desired properties of the SFRM, including adhesion, durability, and overall effectiveness in enhancing the fire resistance of the structural element. Therefore, establishing and verifying the correct mixing volume prior to application is a fundamental step that directly impacts the success of the fireproofing process.