Sentence 3.1.9.1.(2)

Intent 1:

To limit the probability that penetrations of a firewall or a horizontal fire separation are not properly sealed [as required by the referenced test method], which could lead to a loss of integrity of the fire separations, which could lead to the spread of fire and smoke from the building to the adjacent building, which could lead to damage to the adjacent building.

Intent 2:

To exempt penetrations of a firewall or a horizontal fire separation from the application of Sentence 3.1.9.1.(1), on the basis that a higher level of performance with respect to sealing is required for these fire separations.