Floor penetrations shall have an F-rating and T-Rating of at least an hour, but not less than the fire resistance rating of the floor. STI provides this service free of charge. Understanding the amount of movement, especially in fire resistive joint systems, is critical for proper protection. The space between a rated floor slab and the inside face of a curtain wall system is a special case that is called a perimeter barrier. There are two types of penetration firestopping: The two requirements are as follows:.
Therefore, the firestop systems protecting penetrations within these assemblies need to maintain a similar level of performance.
Membrane penetration firestop systems