According to Technical Manual 12-A, what is the maximum bond strength that the specified test method for SFRM can accommodate?

The specified bond strength for Sprayed Fire-Resistive Material (SFRM) in accordance with Technical Manual 12-A is 1,146 psf. This value is established to ensure that the SFRM adheres effectively to the structural components it is applied to, thereby maintaining structural integrity under fire conditions.

Understanding the importance of bond strength in fireproofing applications is crucial, as it directly impacts the material's performance during a fire event. A bond strength that meets or exceeds the prescribed limit helps to ensure that the protective layer remains intact and can effectively limit heat transfer to the underlying structures.

In essence, the value of 1,146 psf reflects the balance between ensuring adequate safety margins while considering practical application methods and material properties. Any lower bond strength would not provide the necessary assurance in structural fire safety, while higher values may not be necessary for performance under typical conditions.