Which testing standard covers SFRM thickness testing?

The correct choice relates to ASTM E 605, which is the standard that specifically addresses the thickness testing of Spray-Applied Fire-Resistive Materials (SFRM). This standard provides the necessary guidelines and procedures for determining the thickness of the applied fireproofing material, which is crucial for ensuring compliance with fire resistance ratings and overall structural safety. Proper thickness is essential because it directly impacts both the fire performance of the coated surface and the material's ability to withstand fire exposure.

Understanding the significance of ASTM E 605 is vital for professionals involved in the application and inspection of fireproofing materials, as it guides them in achieving the required specifications laid out in building codes and fire safety regulations. This depth of knowledge ensures that structures maintain their integrity during fire events, protecting lives and property. Other standards mentioned pertain to different aspects of material testing and do not focus specifically on the thickness measurement for fireproofing applications.