Which of the following materials can achieve a specific flame spread index?

Mineral board is known for its fire-resistant properties and ability to achieve a specific flame spread index, which is a measure of how quickly flames will spread across the surface of a material. This is crucial in building design and safety, especially in commercial buildings where building codes require materials to meet certain fire safety standards.

Mineral board is made from non-combustible materials, allowing it to effectively limit flame spread and contribute to the overall fire resistance of a structure. Its specific formulation and manufacturing processes can result in a predictable flame spread index, making it suitable for various applications in fire-rated assemblies and as a fire barrier.

In contrast, plywood, concrete, and asphalt may not consistently provide the same level of fire resistance or have predictable flame spread indices across all installations. Each of these materials has different properties that can affect how they perform in a fire scenario, usually requiring additional treatments or coatings to achieve comparable fire performance standards.