What is the maximum spacing allowed for mechanical breaks in SFRM?

The maximum spacing allowed for mechanical breaks in Spray-Applied Fire-Resistive Material (SFRM) is 12 inches. This specification is crucial for ensuring the integrity and effectiveness of the fireproofing application. Mechanical breaks are introduced to manage the potential for cracking and to accommodate the movement of structural elements, which can occur due to thermal expansion or contraction.

By maintaining a maximum spacing of 12 inches, the application helps to mitigate the risks of thermal and mechanical stresses that could compromise the fire-resistive barrier. Ensuring proper spacing allows for a consistent layer of fireproofing material, which is vital for maintaining the required fire ratings and protecting the underlying structure. Establishing and adhering to these spacing guidelines is important for safety and compliance with building codes and fire protection standards.