According to ASTM E736, what is the minimum percentage of bond strength required?

The minimum percentage of bond strength required according to ASTM E736 is established as 50% of the target value. This standard is crucial for ensuring that spray-applied fireproofing materials adhere adequately to substrates, such as steel, in order to provide effective fire resistance. Achieving this percentage indicates that the applied fireproofing has sufficient adhesion under standardized testing conditions, which is vital for maintaining the integrity of fire-resistant assemblies during real fire exposure scenarios. This specification supports the overall performance of the fireproofing system, ensuring it meets safety and performance criteria in the built environment.