Sentence 3.1.10.2.(4)

Intent 1:

To limit the probability that the materials used to construct the assembly providing the fire-resistance rating of a firewall will be easily altered or damaged during use, which could lead to an inability of the firewall to control the spread of fire from the building to an adjacent building, which could lead to damage to the adjacent building.

Intent 2:

To limit the probability that the materials used to construct the assembly providing the fire-resistance rating of a firewall will be easily damaged by falling debris during a fire, which could lead to an inability of the firewall to control the spread of fire from the building to an adjacent building, which could lead to damage to the adjacent building.

Intent 3:

To exempt certain materials from the application of Sentence 3.1.10.2.(3) if these materials and their application achieve the minimum level of performance required by Sentence 3.1.10.2.(4).