3.1.10.5.(1)

Intent 1:

To limit the probability of a large number of openings in a firewall, which could lead to the failure of the protective closures for these openings during a fire, which could lead to the spread of fire from one building to another, which could lead to harm to persons in the building not originally involved in the fire.

Intent 2:

To limit the probability of a large number of openings in a firewall, which could lead to the failure of the integrity of the firewall, which could lead to the spread of fire from one building to another, which could lead to harm to persons in the building not originally involved in the fire.