In flame spread examples, which material is given a 100 rating?

In flame spread examples, which material is given a 100 rating?

• A. Pine Wood (50 Rating)
• B. Ceramic Tile (0 Rating)
• C. Concrete (0 Rating)
• D. Red Oak Wood (100 Rating)

Answer: (D)

Understanding flame spread ratings helps predict how quickly a material will contribute to fire growth. The rating runs from 0 to 100, where 0 means almost no flame spread and 100 means flames can travel across the surface with maximum ease. Red Oak Wood is assigned a 100, indicating the highest tendency to spread flames among these materials. That’s why it is the one with the 100 rating. Ceramic tile and concrete score 0 because they’re noncombustible and resist flame spread well. Pine wood has a 50 rating, showing a moderate level of flame spread—more than noncombustible materials but far less than the maximum.

Understanding flame spread ratings helps predict how quickly a material will contribute to fire growth. The rating runs from 0 to 100, where 0 means almost no flame spread and 100 means flames can travel across the surface with maximum ease. Red Oak Wood is assigned a 100, indicating the highest tendency to spread flames among these materials. That’s why it is the one with the 100 rating. Ceramic tile and concrete score 0 because they’re noncombustible and resist flame spread well. Pine wood has a 50 rating, showing a moderate level of flame spread—more than noncombustible materials but far less than the maximum.