Question

In buildings of Type I or Type II construction, the use of combustible thermal and acoustical insulation, other than foam plastics, is permitted with a flame spread index of not more than ____.

Answer 1

In Type I or Type II buildings, combustible thermal and acoustical insulation, other than foam plastics, is permitted with a flame spread index of not more than 25.

Step-by-step explanation:

In buildings of Type I or Type II construction, the use of combustible thermal and acoustical insulation, other than foam plastics, is permitted with a flame spread index of not more than 25. The flame spread index measures the ability of a material to support the spread of fire, with lower values indicating less flammability. Therefore, in Type I or Type II buildings, the thermal and acoustical insulation used must have a flame spread index of 25 or less.