Sentence 3.2.1.4.(1)

Intent 1:

To limit the probability of the spread of fire from the basement to an upper storey during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to harm to persons, including emergency responders.

Intent 2:

To limit the probability of the premature collapse of the floor assemblies in a fire situation during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to harm to persons, including emergency responders.

Intent 3:

To direct Code users to Articles 3.2.2.20. to 3.2.2.90. for the determination of minimum fire-resistance ratings for the floor assemblies.