According to the guidelines, why is measuring bond strength critical for SFRM?

Measuring bond strength is critical for spray-applied fire-resistant materials (SFRM) because it plays a vital role in ensuring structural integrity. The bond strength refers to how well the fireproofing material adheres to the substrate, which can include steel beams, concrete, or other building elements. If the bond is weak, the fireproofing material can delaminate or fall away during a fire, reducing its effectiveness in protecting the structural elements from heat and flames.

Ensuring structural integrity is paramount because buildings must maintain their load-bearing capabilities during a fire. If the fireproofing fails due to inadequate bond strength, it can lead to structural collapse or significant damage under fire conditions, jeopardizing safety. Therefore, measuring bond strength is an essential part of the quality control process in applying SFRM, ensuring that it will perform effectively when needed most.