While any smoke from a fire is undesirable, tenability analyses are conducted to assess whether a particular set of smoke conditions can be tolerated. The purpose of this paper is to provide an overview of tenability criteria and analytical methods that are used to evaluate the level of life safety provided in buildings. The basis of these criteria will be reviewed. Procedures for analysis of tenability will be outlined relative to the scope and limitations of the methods. Tenability criteria relative to visibility, heat exposure, and smoke toxicity are outlined through a review of case studies.

Units: SI