SOI Construction Abbreviation

Smoke Obscuration Index

The Smoke Obscuration Index (SOI) is a critical measurement in the construction industry, particularly in assessing the performance of materials under fire conditions. It quantifies the amount of smoke produced by a material when it burns, which is essential for ensuring safety and compliance with building codes. The index helps architects and engineers select materials that minimize smoke production, thereby enhancing evacuation routes and reducing health hazards during fires.

Understanding the SOI is vital for construction professionals, as it directly impacts the design and safety of buildings. Materials with a high SOI can obscure visibility, complicating firefighting efforts and evacuation. Therefore, selecting materials with a low SOI is preferred in environments where smoke could pose significant risks, such as in high-rise buildings or enclosed spaces. This index is a key factor in material selection, ensuring that buildings not only meet regulatory requirements but also prioritize occupant safety.