What does the term limited combustible material imply?

The term "limited combustible material" refers specifically to materials that do not meet the criteria of being classified as noncombustible. This means that although these materials may not ignite as readily as other, more combustible materials, they can still combust under certain conditions. Limited combustible materials typically have a reduced fire risk compared to highly combustible materials, but they are not immune to ignition or fire spread, distinguishing them from noncombustible materials.

Understanding this classification is crucial for code compliance and safety in structure design, especially in areas requiring fire resistance. Noncombustible materials, as per codes, are materials that cannot burn, whereas limited combustible materials can ignite but require specific conditions to do so. This distinction is important for fire marshals, safety inspectors, and sprinkler fitters to recognize when planning and constructing fire protection systems.